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Climate change in Australia has been a critical issue since the beginning of the 21st century.
Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
is becoming hotter and more prone to extreme heat, bushfires, droughts, floods, and longer fire seasons because of
climate change In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to E ...
. Since the beginning of the 20th century, Australia has experienced an increase of over 1.4 °C in average annual temperatures, with warming occurring at twice the rate over the past 50 years as in the previous 50 years. Recent climate events such as extremely high temperatures and widespread drought have focused government and public attention on the effects of climate change in Australia. Rainfall in
southwestern Australia Southwest Australia is a biogeographic region in Western Australia. It includes the Mediterranean-climate area of southwestern Australia, which is home to a diverse and distinctive flora and fauna. The region is also known as the Southwest Au ...
has decreased by 10–20% since the 1970s, while southeastern Australia has also experienced a moderate decline since the 1990s. Rainfall is expected to become heavier and more infrequent, as well as more common in summer rather than in winter. Water sources in the southeastern areas of Australia have depleted due to the increasing population in urban areas coupled with a persistent prolonged drought. Climate change is negatively affecting the continent's environment, economy, and communities. Australia is vulnerable to the effects of global warming projected for the next 50 to 100 years because of its extensive arid and semi-arid areas, and already warm climate, high annual rainfall variability, and existing pressures on water supply. The continent's high fire risk increases this susceptibility to changes in temperature and climate. Furthermore, Australia's population is highly concentrated in coastal areas, and its important tourism industry depends on the health of the
Great Barrier Reef The Great Barrier Reef is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over over an area of approximately . The reef is located in the Coral Sea, off the coast of Queensland, ...
and other fragile ecosystems. The impacts of climate change in Australia will be complex and to some degree uncertain, but increased foresight may enable the country to safeguard its future through planned
mitigation Mitigation is the reduction of something harmful or the reduction of its harmful effects. It may refer to measures taken to reduce the harmful effects of hazards that remain ''in potentia'', or to manage harmful incidents that have already occur ...
and
adaptation In biology, adaptation has three related meanings. Firstly, it is the dynamic evolutionary process of natural selection that fits organisms to their environment, enhancing their evolutionary fitness. Secondly, it is a state reached by the po ...
. Mitigation, such as stopping burning
coal in Australia Coal is mined in every state of Australia. The largest black coal resources occur in Queensland and New South Wales. About 70% of coal mined in Australia is exported, mostly to eastern Asia, and of the balance most is used in electricity gener ...
and other countries, may limit climate change and its impacts, while adaptation can be performed at national and local levels. Analysis of future emissions trajectories indicates that left unchecked, human emissions of
greenhouse gas A greenhouse gas (GHG or GhG) is a gas that Absorption (electromagnetic radiation), absorbs and Emission (electromagnetic radiation), emits radiant energy within the thermal infrared range, causing the greenhouse effect. The primary greenhouse ...
es (GHG) will increase several fold during the 21st century. Consequently, Australia's annual average temperatures are projected to increase 0.4–2.0 °C above 1990 levels by the year 2030, and 1–6 °C by 2070. Average precipitation in the southwest and southeast Australia is projected to decline during this time, while regions such as the northwest may experience increases in rainfall. Meanwhile, Australia's coastlines will experience erosion and inundation from an estimated 8–88 cm increase in global sea level. Such
climate change In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to E ...
s will have diverse implications for Australia's environment, economy, and public health. Future impacts will include more severe
flood A flood is an overflow of water ( or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrol ...
s,
drought A drought is defined as drier than normal conditions.Douville, H., K. Raghavan, J. Renwick, R.P. Allan, P.A. Arias, M. Barlow, R. Cerezo-Mota, A. Cherchi, T.Y. Gan, J. Gergis, D.  Jiang, A.  Khan, W.  Pokam Mba, D.  Rosenfeld, J. Tierney, an ...
s, and cyclones. Reaching zero emissions by 2050 possibly would not be enough for preventing 2 degrees temperature rise. The exposure of
Indigenous Australians Indigenous Australians or Australian First Nations are people with familial heritage from, and membership in, the ethnic groups that lived in Australia before British colonisation. They consist of two distinct groups: the Aboriginal peoples ...
to climate change impacts is exacerbated by existing socio-economic disadvantages which are linked to colonial and post-colonial marginalisation. Climate issues include
wildfires A wildfire, forest fire, bushfire, wildland fire or rural fire is an unplanned, uncontrolled and unpredictable fire in an area of combustible vegetation. Depending on the type of vegetation present, a wildfire may be more specifically identif ...
,
heatwaves A heat wave, or heatwave, is a period of excessively hot weather, which may be accompanied by high humidity, especially in oceanic climate countries. While definitions vary, a heat wave is usually measured relative to the usual climate in the ...
,
flood A flood is an overflow of water ( or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrol ...
s,
cyclone In meteorology, a cyclone () is a large air mass that rotates around a strong center of low atmospheric pressure, counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere as viewed from above (opposite to an anti ...
s, rising sea-levels, rising temperatures, and
erosion Erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location where it is deposited. Erosion is distin ...
. The communities most affected by climate changes are those in the North where Aboriginal and Torres Strait Islander people make up 30% of the population. Aboriginal and Torres Strait Islander communities located in the coastal north are the most disadvantaged due to social and economic issues and their reliance on traditional land for food, culture, and health. This has raised the question for many community members in these areas, "Should we stay or move away?"


Greenhouse gas emissions


Impacts on the natural environment


Temperature and weather changes

Australia's instrumental record from 1885 to the present shows the following broad picture: Conditions from 1885 to 1898 were generally fairly wet, though less so than in the period since 1968. The only noticeably dry years in this era were 1888 and 1897. Although some coral core data suggest that 1887 and 1890 were, with 1974, the wettest years across the continent since settlement, rainfall data for
Alice Springs Alice Springs ( aer, Mparntwe) is the third-largest town in the Northern Territory of Australia. Known as Stuart until 31 August 1933, the name Alice Springs was given by surveyor William Whitfield Mills after Alice, Lady Todd (''née'' Al ...
, then the only major station covering the interior of the Northern Territory and Western Australia, strongly suggest that 1887 and 1890 were overall not as wet as 1974 or even 2000. In New South Wales and Queensland, however, the years 1886–1887 and 1889–1894 were indeed exceptionally wet. The heavy rainfall over this period has been linked with a major expansion of the sheep population and February 1893 saw the disastrous
1893 Brisbane flood The 1893 Brisbane flood, occasionally referred to as the Great Flood of 1893 or the Black February flood, occurred in 1893 in Brisbane, Queensland, Australia. The Brisbane River burst its banks on three occasions in February 1893. It was the ...
. A drying of the climate took place from 1899 to 1921, though with some interruptions from wet
El Niño El Niño (; ; ) is the warm phase of the El Niño–Southern Oscillation (ENSO) and is associated with a band of warm ocean water that develops in the central and east-central equatorial Pacific (approximately between the International Date L ...
years, especially between 1915 and early 1918 and in 1920–1921, when the wheat belt of the southern interior was drenched by its heaviest winter rains on record. Two major El Niño events in 1902 and 1905 produced the two driest years across the whole continent, whilst 1919 was similarly dry in the eastern States apart from the Gippsland. The period from 1922 to 1938 was '' exceptionally dry'', with only 1930 having Australia-wide rainfall above the long-term mean and the Australia-wide average rainfall for these seventeen years being 15 to 20 per cent below that for other periods since 1885. This dry period is attributed in some sources to a weakening of the Southern Oscillation and in others to reduced sea surface temperatures. Temperatures in these three periods were generally cooler than they are currently, with 1925 having the coolest minima of any year since 1910. However, the dry years of the 1920s and 1930s were also often quite warm, with 1928 and 1938 having particularly high maxima. The period from 1939 to 1967 began with an increase in rainfall: 1939, 1941 and 1942 were the first close-together group of relatively wet years since 1921. From 1943 to 1946, generally dry conditions returned, and the two decades from 1947 saw fluctuating rainfall. 1950, 1955 and 1956 were exceptionally wet except 1950 and 1956 over arid and wheatbelt regions of Western Australia. 1950 saw extraordinary rains in central
New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...
and most of
Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_ ...
:
Dubbo Dubbo () is a city in the Orana Region of New South Wales, Australia. It is the largest population centre in the Orana region, with a population of 43,516 at June 2021. The city is located at the intersection of the Newell, Mitchell, and Gol ...
's 1950 rainfall of can be estimated to have a
return period A return period, also known as a recurrence interval or repeat interval, is an average time or an estimated average time between events such as earthquakes, floods, landslides, or river discharge flows to occur. It is a statistical measurement typ ...
of ''between 350 and 400 years'', whilst
Lake Eyre Lake Eyre ( ), officially known as Kati Thanda–Lake Eyre, is an endorheic lake in east-central Far North South Australia, some north of Adelaide. The shallow lake is the depocentre of the vast endorheic Lake Eyre basin, and contains the ...
filled for the first time in thirty years. In contrast, 1951, 1961 and 1965 were very dry, with complete monsoon failure in 1951/1952 and extreme drought in the interior during 1961 and 1965. Temperatures over this period initially fell to their lowest levels of the 20th century, with 1949 and 1956 being particularly cool, but then began a rising trend that has continued with few interruptions to the present. Since 1968, Australia's rainfall has been 15 per cent higher than between 1885 and 1967. The wettest periods have been from 1973 to 1975 and 1998 to 2001, which comprise ''seven of the thirteen wettest years'' over the continent since 1885. Overnight minimum temperatures, especially in winter, have been markedly higher than before the 1960s, with 1973, 1980, 1988, 1991, 1998 and 2005 outstanding in this respect. There has been a marked decrease in the frequency of frost across Australia. According to the Bureau of Meteorology, Australia's annual mean temperature for 2009 was 0.9 °C above the 1961–90 average, making it the nation's second-warmest year since high-quality records began in 1910. According to the
Bureau of Meteorology The Bureau of Meteorology (BOM or BoM) is an executive agency of the Australian Government responsible for providing weather services to Australia and surrounding areas. It was established in 1906 under the Meteorology Act, and brought together ...
's 2011 Australian Climate Statement, Australia had lower than average temperatures in 2011 as a consequence of a
La Niña La Niña (; ) is an oceanic and atmospheric phenomenon that is the colder counterpart of as part of the broader El Niño–Southern Oscillation (ENSO) climate pattern. The name ''La Niña'' originates from Spanish for "the girl", by an ...
weather pattern; however, "the country's 10-year average continues to demonstrate the rising trend in temperatures, with 2002–2011 likely to rank in the top two warmest 10-year periods on record for Australia, at above the long-term average". Furthermore, 2014 was Australia's third warmest year since national temperature observations commenced in 1910.


Sea level rise

The Australian Government released a report saying that up to 247,600 houses are at risk from flooding from a sea level rise of 1.1 metres. There were 39,000 buildings located within 110 metres of 'soft' erodible shorelines, at risk from a faster erosion due to sea level rise. Adaptive responses to this specific climate change threat are often incorporated in the coastal planning policies and recommendations at the state level. For instance, the
Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th ...
State Coastal Planning Policy established a sea level rise benchmark for initiatives that address the problem over a 100-year period.


Water (droughts and floods)

Bureau of Meteorology The Bureau of Meteorology (BOM or BoM) is an executive agency of the Australian Government responsible for providing weather services to Australia and surrounding areas. It was established in 1906 under the Meteorology Act, and brought together ...
records since the 1860s show that a 'severe' drought has occurred in Australia, on average, once every 18 years. Australia is already the driest populated continent in the world. Rainfall in
southwestern Australia Southwest Australia is a biogeographic region in Western Australia. It includes the Mediterranean-climate area of southwestern Australia, which is home to a diverse and distinctive flora and fauna. The region is also known as the Southwest Au ...
has decreased by 10–20% since the 1970s, while southeastern Australia has also experienced a moderate decline since the 1990s. Rainfall is expected to become heavier and more infrequent, as well as more common in summer rather than in winter. In June 2008 it became known that an expert panel had warned of long-term, maybe irreversible, severe ecological damage for the whole Murray-Darling basin if it did not receive sufficient water by October of that year.
Water restrictions An outdoor water-use restriction is a ban or other lesser restrictions put into effect that restricts the outdoor use of water supplies. Often called a watering ban or hosepipe ban, it can affect: *irrigation of lawns * car washing * recreation ...
were in place in many regions and cities of Australia in response to chronic shortages resulting from the 2008
drought A drought is defined as drier than normal conditions.Douville, H., K. Raghavan, J. Renwick, R.P. Allan, P.A. Arias, M. Barlow, R. Cerezo-Mota, A. Cherchi, T.Y. Gan, J. Gergis, D.  Jiang, A.  Khan, W.  Pokam Mba, D.  Rosenfeld, J. Tierney, an ...
. In 2004 paleontologist
Tim Flannery Timothy Fridtjof Flannery (born 28 January 1956) is an Australian mammalogist, palaeontologist, environmentalist, Conservation biology, conservationist, Exploration, explorer, author, Science communication, science communicator, activist and p ...
predicted that unless it made drastic changes the city of
Perth Perth is the capital and largest city of the Australian state of Western Australia. It is the fourth most populous city in Australia and Oceania, with a population of 2.1 million (80% of the state) living in Greater Perth in 2020. Perth is ...
, Western Australia, could become the world's first ghost
metropolis A metropolis () is a large city or conurbation which is a significant economic, political, and cultural center for a country or region, and an important hub for regional or international connections, commerce, and communications. A big c ...
—an abandoned city with no more water to sustain its population. In 2019 the drought and water resources minister of Australia David Littleproud, said, that he "totally accepts" the link between climate change and drought in Australia because he "live it". He says that the drought in Australia is already eight years long. He called for a reduction in
greenhouse gas emission Greenhouse gas emissions from human activities strengthen the greenhouse effect, contributing to climate change. Most is carbon dioxide from burning fossil fuels: coal, oil, and natural gas. The largest emitters include coal in China and ...
and massive installation of renewable energy. Former leader of the nationalists Barnaby Joyce said that if the drought became more fierce and dams will not be built, the coalition risk "political annihilation". According to the 2022 IPCC report, there has been an increase in flooding episodes and other catastrophic weather events because of global warming. These unusual weather changes in include rainfall in the north and severe droughts in the south. Less rainfall means less streamflow of water for major cities. The IPCC recommends a step up to our adaptation and finance policies in our systems to keep up with the drastic impacts of climate change for a sustainable development.


Water resources

Healthy and diverse vegetation is essential to river health and quality, and many of Australia's most important catchments are covered by native forest, maintaining a healthy ecosystem. Climate change will affect growth, species composition and pest incursion of native species and in turn, will profoundly affect water supply from these catchments. Increased re-afforestation in cleared catchments also has the prospect for water losses. The CSIRO predicts that the additional results in Australia of a temperature rise of between only 1 and 2 degrees Celsius will be: * 12–25% reduction inflow in the
Murray River The Murray River (in South Australia: River Murray) (Ngarrindjeri: ''Millewa'', Yorta Yorta: ''Tongala'') is a river in Southeastern Australia. It is Australia's longest river at extent. Its tributaries include five of the next six longest r ...
and
Darling River The Darling River ( Paakantyi: ''Baaka'' or ''Barka'') is the third-longest river in Australia, measuring from its source in northern New South Wales to its conflu ence with the Murray River at Wentworth, New South Wales. Including its longes ...
basin. * 7–35% reduction in
Melbourne Melbourne ( ; Boonwurrung/Woiwurrung: ''Narrm'' or ''Naarm'') is the capital and most populous city of the Australian state of Victoria, and the second-most populous city in both Australia and Oceania. Its name generally refers to a met ...
's water supply.


Bushfires

There is an increase in fire activity in Australia in the latest decades. The causes include "more dangerous fire weather conditions, increased risk factors associated with pyroconvection, including fire-generated thunderstorms, and increased ignitions from dry lightning, all associated to varying degrees with anthropogenic climate change". Firefighting officials are concerned that the effects of climate change will increase the frequency and intensity of
bushfires A wildfire, forest fire, bushfire, wildland fire or rural fire is an unplanned, uncontrolled and unpredictable fire in an area of combustible vegetation. Depending on the type of vegetation present, a wildfire may be more specifically identif ...
under even a "low global warming" scenario. A 2006 report, prepared by CSIRO Marine and Atmospheric Research
Bushfire CRC
and the Australian Bureau of Meteorology, identified South Eastern Australia as one of the three most fire-prone areas in the world, and concluded that an increase in fire-weather risk is likely at most sites over the next several decades, including the average number of days when the
McArthur Forest Fire Danger Index The McArthur Forest Fire Danger Index (FFDI) was developed in the 1960s by CSIRO scientist A. G. McArthur to measure the degree of danger of fire in Australian forests. The index combines a record of dryness, based on rainfall and evaporation, w ...
rating is very high or extreme. It also found that the combined frequencies of days with very high and extreme FFDI ratings are likely to increase 4–25% by 2020 and 15–70% by 2050, and that the increase in fire-weather risk is generally largest inland.
Australian Greens The Australian Greens, commonly known as The Greens, are a confederation of Green state and territory political parties in Australia. As of the 2022 federal election, the Greens are the third largest political party in Australia by vote and th ...
leader
Bob Brown Robert James Brown (born 27 December 1944) is a former Australian politician, medical doctor and environmentalist. He was a senator and the parliamentary leader of the Australian Greens. Brown was elected to the Australian Senate on the Tasman ...
said that the fires were "a sobering reminder of the need for this nation and the whole world to act and put at a priority the need to tackle climate change". The Black Saturday Royal Commission recommended that "the amount of fuel-reduction burning done on public land each year should be more than doubled". In 2018, the fire season in Australia began in the winter. August 2018 was hotter and windier than the average. Those meteorological conditions led to a
drought A drought is defined as drier than normal conditions.Douville, H., K. Raghavan, J. Renwick, R.P. Allan, P.A. Arias, M. Barlow, R. Cerezo-Mota, A. Cherchi, T.Y. Gan, J. Gergis, D.  Jiang, A.  Khan, W.  Pokam Mba, D.  Rosenfeld, J. Tierney, an ...
in
New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...
. The Government of the state already gave more than $1 billion to help the farmers. The hotter and drier climate led to more fires. The fire seasons in Australia are lengthening and fire events became more frequent in the latest 30 years. These trends are probably linked to climate change. The
2019–20 Australian bushfire season The 201920 Australian bushfire season (Black Summer), was a period of bushfires in many parts of Australia, which, due to its unusual intensity, size, duration, and uncontrollable dimension, is considered a megafire. The Australian National ...
was by some measures Australia's "worst bushfire season on record". In New South Wales, the fires burnt through more land than any other blazes in the past 25 years, in addition to being the state's worst bushfire season on record. NSW also experienced the longest continuously burning bushfire complex in Australia's history, having burnt more than , with flames being reported. Approximately 3 billion animals were killed or displaced by the bushfires and this made them one of the worst natural disasters in recorded history. The chance of reaching the climatic conditions that fuels the fires became more than four times bigger since the year 1900 and will become eight times more likely to occur if the temperature will rise by 2 degrees from the preindustrial level. In December 2019 the
New South Wales Government The Government of New South Wales, also known as the NSW Government, is the Australian state democratic administrative authority of New South Wales. It is currently held by a coalition of the Liberal Party and the National Party. The Governmen ...
declared a
state of emergency A state of emergency is a situation in which a government is empowered to be able to put through policies that it would normally not be permitted to do, for the safety and protection of its citizens. A government can declare such a state du ...
after record-breaking temperatures and prolonged
drought A drought is defined as drier than normal conditions.Douville, H., K. Raghavan, J. Renwick, R.P. Allan, P.A. Arias, M. Barlow, R. Cerezo-Mota, A. Cherchi, T.Y. Gan, J. Gergis, D.  Jiang, A.  Khan, W.  Pokam Mba, D.  Rosenfeld, J. Tierney, an ...
exacerbated the bushfires. In 2019 bushfires linked to climate change created
air pollution Air pollution is the contamination of air due to the presence of substances in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. There are many different types ...
11 times higher that the hazardous level in many areas of New South Wales. Many medical groups called to protect people from "public health emergency" and moving on from fossil fuels. According to the
United Nations Environment Programme The United Nations Environment Programme (UNEP) is responsible for coordinating responses to environmental issues within the United Nations system. It was established by Maurice Strong, its first director, after the United Nations Conference on th ...
the megafires in Australia in 2019–2020 are probably linked to climate change that created the unusually dry and hot weather conditions. This is part of a global trend.
Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...
, the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
, the
Russian Federation Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...
, and the
Democratic Republic of the Congo The Democratic Republic of the Congo (french: République démocratique du Congo (RDC), colloquially "La RDC" ), informally Congo-Kinshasa, DR Congo, the DRC, the DROC, or the Congo, and formerly and also colloquially Zaire, is a country in ...
all face similar problems. By the second week of January the fires burned a territory of approximately 100,000 square kilometres close to the territory of England, killed one billion animals and caused large economic damage. Researchers claim that the exceptionally strong wildfires in 2019–2020 were impossible without the effects of climate change. More than one-fifth of Australian forests were burned in one season, which was completely unprecedented. They say that: "In the case of recent events in Australia, there is no doubt that the record temperatures of the past year would not be possible without anthropogenic influence, and that under a scenario where emissions continue to grow, such a year would be average by 2040 and exceptionally cool by 2060." Climate change probably also caused drier weather conditions in Australia by impacting
Indian Ocean Dipole The Indian Ocean Dipole (IOD), also known as the Indian Niño, is an irregular oscillation of sea surface temperatures in which the western Indian Ocean becomes alternately warmer (positive phase) and then colder (negative phase) than the eastern ...
, which also increase fires. In average, below 2% of Australian forests burn annually. Climate change has increased the likelihood of the wildfires in 2019–2020 by at least 30%, but researchers said the result is probably conservative.


Extreme weather events

Rainfall patterns and the degree of droughts and storms brought about by extreme weather conditions are likely to be affected. The CSIRO predicts that a temperature rise of between 2 and 3 degrees Celsius on the Australian continent could incur some of the following extreme weather occurrences, in addition to standard patterns: * Wind speeds of
tropical cyclone A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain and squalls. Depend ...
s could intensify by 5 to 10%.McInnes, K.L., Walsh, K.J.E., Hubbert, G.D., and Beer, T. (2003) Impact of sea-level rise and storm surges on a coastal community. Natural Hazards 30, 187–207 * In 100 years, strong tides would increase by 12–16% along eastern Victoria's coast. * The forest fire danger indices in New South Wales and Western Australia would grow by 10% and the forest fire danger indices in south, central and north-east Australia would increase by more than 10%.


Heatwaves

A report in 2014 revealed that, due to the change in climatic patterns, heat waves were found to be increasingly more frequent and severe, with an earlier start to the season and longer duration. Since temperatures began to be recorded in 1910, they have increased by an average of 1 °C, with most of this change occurring from 1950 onwards. This period has seen the frequency and intensity of extreme heat events increase. Summer 2013–14 was warmer than average for the entirety of Australia. Both Victoria and South Australia saw record-breaking temperatures. Adelaide recorded a total of 13 days reaching 40 °C or more, 11 of which reached 42 °C or more, as well as its fifth-hottest day on record—45.1 °C on 14 January. The number of days over 40 °C beat the previous record of summer 1897–1898, when 11 days above 40 °C were recorded. Melbourne recorded six days over 40 °C, while nighttime temperatures were much warmer than usual, with some nights failing to drop below 30 °C. Overall, the summer of 2013–2014 was the third-hottest on record for Victoria, fifth-warmest on record for New South Wales, and sixth-warmest on record for South Australia. This heatwave has been directly linked to climate change, which is unusual for specific weather events. Following the 2014 event, it was predicted that temperatures might increase by up to 1.5 °C by 2030. 2015 was Australia's fifth-hottest year on record, continuing the trend of record-breaking high temperatures across the country. According to Australian
Climate Council The Climate Council is Australia's leading climate change communications non-profit organisation formed to provide independent, authoritative information on climate change and its solutions to the Australian public. It advocates reducing greenho ...
in 2017 Australia had its warmest winter on record, in terms of average maximum temperatures, reaching nearly 2 °C above average. January 2019 was the hottest month ever in Australia with average temperatures exceeding .


Ecosystems and biodiversity

Sustained climate change could have drastic effects on the ecosystems of Australia. For example, rising ocean temperatures and continual erosion of the coasts from higher water levels will cause further bleaching of the Great Barrier Reef. Beyond that, Australia's climate will become even harsher, with more powerful tropical cyclones and longer droughts. The
Department of Climate Change The Department of Climate Change was an Australian Government department that existed between 2007 and 2010. Operational activities The functions of the department were broadly classified into the following matters: *Development and co-ordinat ...
said in its Climate Change Impacts and Costs fact sheet: "...ecologically rich sites, such as the Great Barrier Reef, Queensland Wet Tropics, Kakadu Wetlands, Australian Alpine areas, south-western Australia and sub- Antarctic islands are all at risk, with significant
loss of biodiversity Biodiversity loss includes the worldwide extinction of different species, as well as the local reduction or loss of species in a certain habitat, resulting in a loss of biological diversity. The latter phenomenon can be temporary or permanent, de ...
projected to occur by 2020". It also said: "Very conservatively, 90 Australian animal species have so far been identified at risk from climate change, including mammals, insects, birds, reptiles, fish, and amphibians from all parts of Australia." Australia has some of the world's most diverse ecosystems and natural habitats, and it may be this variety that makes them the Earth's most fragile and at-risk when exposed to climate change. The Great Barrier Reef is a prime example. Over the past 20 years it has experienced unparalleled rates of
bleaching Bleach is the generic name for any chemical product that is used industrially or domestically to remove color (whitening) from a fabric or fiber or to clean or to remove stains in a process called bleaching. It often refers specifically, to ...
. Additional warming of 1 °C is expected to cause substantial losses of species and of associated coral communities. The CSIRO predicts that the additional results in Australia of a temperature rise of between 2 and 3 degrees Celsius will be: * 97% of the Great Barrier Reef bleached annually. * 10–40% loss of principal habitat for Victoria and montane tropical vertebrate species. * 92% decrease in butterfly species' primary habitats. * 98% reduction in Bowerbird habitat in
Northern Australia The unofficial geographic term Northern Australia includes those parts of Queensland and Western Australia north of latitude 26° and all of the Northern Territory. Those local government areas of Western Australia and Queensland that lie p ...
. * 80% loss of freshwater wetlands in Kakadu (30 cm sea level rise).


Great Barrier Reef

The
Great Barrier Reef The Great Barrier Reef is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over over an area of approximately . The reef is located in the Coral Sea, off the coast of Queensland, ...
could be killed as a result of the rise in water temperature forecast by the IPCC. A
UNESCO The United Nations Educational, Scientific and Cultural Organization is a specialized agency of the United Nations (UN) aimed at promoting world peace and security through international cooperation in education, arts, sciences and culture. It ...
World Heritage Site A World Heritage Site is a landmark or area with legal protection by an international convention administered by the United Nations Educational, Scientific and Cultural Organization (UNESCO). World Heritage Sites are designated by UNESCO for h ...
, the reef has experienced unprecedented rates of bleaching over the past two decades, and additional warming of only 1 °C is anticipated to cause considerable losses or contractions of species associated with coral communities.


Lord Howe Island

The coral reefs of the World Heritage-listed
Lord Howe Island Lord Howe Island (; formerly Lord Howe's Island) is an irregularly crescent-shaped volcanic remnant in the Tasman Sea between Australia and New Zealand, part of the Australian state of New South Wales. It lies directly east of mainland P ...
could be killed as a result of the rise in water temperature forecast by the IPCC. As of April 2019, approximately 5% of the coral is dead.


Impacts on people


Economic impacts

According to the
Climate Commission The Climate Commission was an independent body established in 2011 by the Government of Australia to communicate "reliable and authoritative information" about climate change in Australia. Abolished by the newly elected LNP government led by Prime ...
(now the
Climate Council The Climate Council is Australia's leading climate change communications non-profit organisation formed to provide independent, authoritative information on climate change and its solutions to the Australian public. It advocates reducing greenho ...
) report in 2013, the extreme heatwaves, flooding and bushfires striking Australia have been intensified by climate change and will get worse in future in terms of their impacts on people, property, communities and the environment. The summer of 2012/2013 included the hottest summer, hottest month and hottest day on record. The cost of the 2009 bushfires in Victoria was estimated at A$4.4bn (£3bn) and the Queensland floods of 2010/2011 cost over A$5bn. In 2008 the Treasurer and the
Minister for Climate Change and Water The Minister for Climate Change and Energy is a portfolio in the Government of Australia. The current Minister is Chris Bowen. The minister administers his or her portfolios through the Department of Climate Change, Energy, the Environment and W ...
released a report that concluded the economy will grow with an
emissions trading scheme Emissions trading is a market-based approach to controlling pollution by providing economic incentives for reducing the emissions of pollutants. The concept is also known as cap and trade (CAT) or emissions trading scheme (ETS). Carbon emission t ...
in place. A report released in October 2009 by the Standing Committee on Climate Change, Water, Environment and the Arts, studying the effects of a 1-metre sea level rise, quite possible within the next 30–60 years, concluded that around 700,000 properties around Australia, including 80,000 buildings, would be inundated, the collective value of these properties is estimated at $155 billion.''Herald Sun'', "Victoria's Stormy Forecast", Oct, 28, 2009 In 2019 the Australian Bureau of Agricultural and Resource Economics and Sciences published a report about the impact of climate change on the profitability of the Australian agriculture, saying that the profit of the Australian farms was cut by 22% due to climate change in the years 2000–2019. According to the 2022 IPCC report Australia will lose billions of dollars due to loss of life, and physical damages. These natural disasters are caused by climate change and increasing global warming will worsen these events. The report estimates that under 2 degrees of warming Australia will lose $115 billion dollars in the next decade, and $350 billion in the next twenty years. If warming goes up to under 3 degrees of warming Australia's economy will lose $200 billion dollars and $600 billion by 2042.


Agriculture forestry and livestock

Small changes caused by
global warming In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to E ...
, such as a longer growing season, a more temperate climate and increased concentrations, may benefit Australian crop agriculture and forestry in the short term. However, such benefits are unlikely to be sustained with increasingly severe effects of global warming. Changes in precipitation and consequent water management problems will further exacerbate Australia's current water availability and quality challenges, both for commercial and residential use. The CSIRO predicts that the additional results in Australia of a temperature rise of between 3 and 4 degrees Celsius will be: * 32% possibility of diminished wheat production (without adaptation).Howden, S.M., and Jones, R.N. (2001) Costs and benefits of increase and climate change on the Australian wheat industry, Australian Greenhouse Office, Canberra, Australia. * 45% probability of wheat crop value being beneath present levels (without adaptation). * 55% of primary habitat lost for Eucalyptus. * 25–50% rise in common timber yield in cool and wet parts of South Australia.Kirschbaum, M.U.F. (1999) The effect of climate change on forest growth in Australia. In: Impacts of Global Change on Australian Temperate Forests. S.M. Howden and J.T. Gorman (eds), Working Paper Series, 99/08, pp. 62–68 (CSIRO Wildlife and Ecology, Canberra). * 25–50% reduction in common timber yield in North Queensland and the Top End. * 6% decrease in Australian net primary production (for 20% precipitation decrease) * 128% increase in tick-associated losses in net cattle production weight.


Electricity demand

Use of domestic air conditioners during severe heatwaves can double electricity demand, placing great stress on electricity generation and transmission networks, and lead to
load shedding Demand response is a change in the power consumption of an electric utility customer to better match the demand for power with the supply. Until the 21st century decrease in the cost of pumped storage and batteries electric energy could not be ...
.


Impacts on housing


Settlements and infrastructure

Global warming could lead to substantial alterations in climate extremes, such as tropical cyclones, heat waves and severe precipitation events. This would degrade infrastructure and raise costs through intensified energy demands, maintenance for damaged transportation infrastructure, and disasters, such as
coastal flooding Coastal flooding normally occurs when dry and low-lying land is submerged by seawater. The range of a coastal flooding is a result of the elevation of floodwater that penetrates the inland which is controlled by the topography of the coastal land ...
. In the coastal zone,
sea level rise Globally, sea levels are rising due to human-caused climate change. Between 1901 and 2018, the globally averaged sea level rose by , or 1–2 mm per year on average.IPCC, 2019Summary for Policymakers InIPCC Special Report on the Ocean and Cry ...
and storm surge may be more critical drivers of these changes than either temperature or precipitation. The CSIRO describes the additional impact on settlements and infrastructure for rises in temperature of only 1 to 2 degrees Celsius: * A 22% rise in 100-year storm surge height around
Cairns Cairns (, ) is a city in Queensland, Australia, on the tropical north east coast of Far North Queensland. The population in June 2019 was 153,952, having grown on average 1.02% annually over the preceding five years. The city is the 5th-most-p ...
; as a result, the area flooded doubles.


Human settlements

Climate change will have a higher impact on Australia's coastal communities, due to the concentration of population, commerce and industry. Climate modelling suggests that a temperature rise of 1–2 °C will result in more intense storm winds, including those from tropical cyclones. Combine this with sea level rise, and the result is greater flooding, due to higher levels of storm surge and wind speed. Coleman, T. (2002) The impact of climate change on insurance against catastrophes. Proceedings of Living with Climate Change Conference. Canberra, 19 December.) Tourism of coastal areas may also be affected by coastal inundation and beach erosion, as a result of sea level rise and storm events. At higher levels of warming, coastal impacts become more severe with higher storm winds and sea levels.


Property

A report released in October 2009 by the Standing Committee on Climate Change, Water, Environment and the arts, studying the effects of a 1-metre sea level rise, possible within the next 30–60 years, concluded that around 700,000 properties around Australia, including 80,000 buildings, would be inundated. The collective value of these properties is estimated at $150 billion. A 1-metre sea level rise would have massive impacts, not just on property and associated economic systems, but in displacement of human populations throughout the continent. Queensland is the state most at risk due to the presence of valuable beachfront housing.


Health impacts

The CSIRO predicts that the additional results in Australia of a temperature rise of between only 1 and 2 degrees Celsius will be: * Southward spread of
malaria Malaria is a mosquito-borne infectious disease that affects humans and other animals. Malaria causes symptoms that typically include fever, tiredness, vomiting, and headaches. In severe cases, it can cause jaundice, seizures, coma, or death. S ...
receptive zones. * Risk of
dengue fever Dengue fever is a mosquito-borne tropical disease caused by the dengue virus. Symptoms typically begin three to fourteen days after infection. These may include a high fever, headache, vomiting, muscle and joint pains, and a characterist ...
among Australians increases from 170,000 people to 0.75–1.6 million. * 10% increase in
diarrhoeal diseases Diarrhea, also spelled diarrhoea, is the condition of having at least three loose, liquid, or watery bowel movements each day. It often lasts for a few days and can result in dehydration due to fluid loss. Signs of dehydration often begin wi ...
among Aboriginal children in central Australia. * 100% increase in a number of people exposed to flooding in Australia. * Increased influx of refugees from the Pacific Islands. Based on some predictions for 2070, data suggests that people who are not accustomed to the warmer climate may experience as much as 45 days per year where they are unable to tolerate being outside, compared to the current 4–6 days per year.


Impacts on indigenous Australians

Indigenous Australians Indigenous Australians or Australian First Nations are people with familial heritage from, and membership in, the ethnic groups that lived in Australia before British colonisation. They consist of two distinct groups: the Aboriginal peoples ...
have a millennia long history of responding and adapting to social and environmental changes. Indigenous Australians have a high level of situated
traditional knowledge Traditional knowledge (TK), indigenous knowledge (IK) and local knowledge generally refer to knowledge systems embedded in the cultural traditions of regional, indigenous, or local communities. According to the World Intellectual Property Organ ...
and historical knowledge about climate change. However, the exposure of Indigenous Australians to climate change impacts is exacerbated by existing socio-economic disadvantages which are linked to colonial and post-colonial marginalisation. Some of these changes include a rise in sea levels, getting hotter and for a longer period of time, and more severe cyclones during the cyclone season. Climate issues include wild fires,
heatwaves A heat wave, or heatwave, is a period of excessively hot weather, which may be accompanied by high humidity, especially in oceanic climate countries. While definitions vary, a heat wave is usually measured relative to the usual climate in the ...
,
flood A flood is an overflow of water ( or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrol ...
s,
cyclone In meteorology, a cyclone () is a large air mass that rotates around a strong center of low atmospheric pressure, counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere as viewed from above (opposite to an anti ...
s,
rising sea levels Rising may refer to: * Rising, a stage in baking - see Proofing (baking technique) *Elevation * Short for Uprising, a rebellion Film and TV * "Rising" (''Stargate Atlantis''), the series premiere of the science fiction television program ''Starga ...
, rising temperatures, and
erosion Erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location where it is deposited. Erosion is distin ...
. The communities most affected by climate changes are those in the North where Aboriginal and Torres Strait Islander people make up 30% of the population.
Aboriginal Australians Aboriginal Australians are the various Indigenous peoples of the Australian mainland and many of its islands, such as Tasmania, Fraser Island, Hinchinbrook Island, the Tiwi Islands, and Groote Eylandt, but excluding the Torres Strait Islands ...
and Torres Strait Islander communities located in the coastal north are the most disadvantaged due to social and economic issues and their reliance on traditional land for food, culture, and health. This has begged the question for many community members in these regions, should they move away from this area or remain present. Many Aboriginal people live in rural and remote agricultural areas across Australia, especially in the Northern and Southern areas of the continent. There are a variety of different climate impacts on different Aboriginal communities which includes cyclones in the Northern region and flooding in Central Australia which negatively impacts cultural sites and therefore the relationship between indigenous people and the places that hold their
traditional knowledge Traditional knowledge (TK), indigenous knowledge (IK) and local knowledge generally refer to knowledge systems embedded in the cultural traditions of regional, indigenous, or local communities. According to the World Intellectual Property Organ ...
. Other effects include sea level rise, loss of land and hunting ground, changes in fire regimes, increased severity and duration of wet and dry seasons as well as reduced numbers of animals in the sea, rivers and creeks.


Vulnerability

The vulnerability comes from remote location where indigenous groups live, lower socio-economic status, and reliance of natural systems for economic needs. Disadvantages which are compounding Indigenous peoples vulnerability to climate change include inadequate health and educational services, limited employment opportunities as well as insufficient infrastructure. Top down institutions have also restricted Indigenous Australians ability to contribute to climate policy frameworks and have their culture and practices recognised. Many of the economic, political, and social-ecological issues present in indigenous communities are long term effects from colonialism and the continued marginalization of these communities. These issues are aggravated by climate change and environmental changes in their respective regions. Indigenous people are seen as particularly vulnerable to climate change because they already live in poverty, poor housing and have poor educational and health services, other socio-political factors place them at risk for climate change impacts. Indigenous people have been portrayed as victims and as vulnerable populations for many years by the media. Aboriginal Australians believe that they have always been able to adapt to climate changes in their geographic areas. Many communities have argued for more community input into strategies and ways to adapt to climate issues instead of top down approaches to combating issues surrounding environmental change. This includes self-determination and agency when deciding how to respond to climate change including proactive actions. Indigenous people have also commented on the need to maintain their physical and mental well being in order to adapt to climate change which can be helped through the kinship relationships between community members and the land they occupy. In Australia, Aboriginal people have argued that in order for the government to combat climate change, their voices must be included in policy making and governance over traditional land. Much of the government and institutional policies related to climate change and environmental issues in Australia has been done so through a top down approach. Indigenous communities have stated that this limits and ignores Aboriginal Australian voices and approaches. Due to
traditional knowledge Traditional knowledge (TK), indigenous knowledge (IK) and local knowledge generally refer to knowledge systems embedded in the cultural traditions of regional, indigenous, or local communities. According to the World Intellectual Property Organ ...
held by these communities and elders within those communities,
traditional ecological knowledge Traditional ecological knowledge (TEK) describes indigenous and other traditional knowledge of local resources. As a field of study in Northern American anthropology, TEK refers to "a cumulative body of knowledge, belief, and practice, evolving by ...
and frameworks are necessary to combat these and a variety of different environmental issues.


= Heat and drought

= Fires and
droughts in Australia Drought in Australia is defined by the Australian Bureau of Meteorology as rainfall over a three-month period being in the lowest decile of what has been recorded for that region in the past. This definition takes into account that drought is ...
, including the Northern regions, occur mostly in savannas because of current environmental changes in the region. The majority of the fire prone areas in the savanna region are owned by Aboriginal Australian communities, the traditional stewards of the land. Aboriginal Australians have traditional landscape management methods including burning and clearing the savanna areas which are the most susceptible to fires. Traditional landscape management declined in the 19th century as Western landscape management took over. Today, traditional landscape management has been revitalized by Aboriginal Australians, including elders. This traditional landscape practices include the use of clearing and burning to get rid of old growth. Though the way in which indigenous communities in this region manage the landscape has been banned, Aboriginal Australian communities who use these traditional methods actually help in reducing greenhouse gas emissions.


= Impact of climate change on health

= Increased temperatures, wildfires, and
drought A drought is defined as drier than normal conditions.Douville, H., K. Raghavan, J. Renwick, R.P. Allan, P.A. Arias, M. Barlow, R. Cerezo-Mota, A. Cherchi, T.Y. Gan, J. Gergis, D.  Jiang, A.  Khan, W.  Pokam Mba, D.  Rosenfeld, J. Tierney, an ...
are major issues in regard to the health of Aboriginal Australian communities. Heat poses a major risk to elderly members of communities in the North. This includes issues such as heat stroke and heat exhaustion. Many of the rural indigenous communities have faced thermal stress and increased issues surrounding access to water resources and ecological landscapes. This impacts the relationship between Aboriginal Australians and biodiversity, as well as impacts social and cultural aspects of society. Aboriginal Australians who live in isolated and remote traditional territories are more sensitive than non-indigenous Australians to changes that effect the ecosystems they are a part of. This is in large part due to the connection that exists between their health (including physical and mental), the health of their land, and the continued practice of traditional cultural customs. Aboriginal Australians have a unique and important relationship with the traditional land of their ancestors. Because of this connection, the dangerous consequences of climate change in Australia has resulted in a decline in health including mental health among an already vulnerable population. In order to combat health disparities among these populations, community based projects and culturally relevant mental and physical health programs are necessary and should include community members when running these programs.


Traditional knowledge

Indigenous people have always responded and adapted to climate change, including indigenous people of
Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
. Aboriginal Australian people have existed in Australia for tens of thousands of years. Due to this continual habitation, Aboriginal Australians have observed and adapted to climatic and environmental changes for millennia which uniquely positions them to be able to respond to current climate changes. Though these communities have shifted and changed their practices overtime,
traditional ecological knowledge Traditional ecological knowledge (TEK) describes indigenous and other traditional knowledge of local resources. As a field of study in Northern American anthropology, TEK refers to "a cumulative body of knowledge, belief, and practice, evolving by ...
exists that can benefit local and indigenous communities today. This knowledge is part of traditional cultural and spiritual practices within these indigenous communities. The practices are directly tied to the unique relationship between Aboriginal Australians and their ecological landscapes. This relationship results in a socio-ecological system of balance between humans and nature Indigenous communities in Australia have specific generational
traditional knowledge Traditional knowledge (TK), indigenous knowledge (IK) and local knowledge generally refer to knowledge systems embedded in the cultural traditions of regional, indigenous, or local communities. According to the World Intellectual Property Organ ...
about weather patterns, environmental changes and climatic changes. These communities have adapted to climate change in the past and have knowledge that non-Indigenous people may be able to utilize to adapt to climate change currently and in the future. Indigenous people have not been offered many opportunities or provided with sufficient platforms to influence and contribute their
traditional knowledge Traditional knowledge (TK), indigenous knowledge (IK) and local knowledge generally refer to knowledge systems embedded in the cultural traditions of regional, indigenous, or local communities. According to the World Intellectual Property Organ ...
to the creation of current international and local policies associated to climate change adaptation. Although, Indigenous people have pushed back on this reality, by creating their own platforms and trying to be active members in the conversation surrounding climate change including at international meetings. Specifically, Indigenous people of Australia have traditional knowledge to adapt to increased pressures of global environmental change. Though some of this
traditional knowledge Traditional knowledge (TK), indigenous knowledge (IK) and local knowledge generally refer to knowledge systems embedded in the cultural traditions of regional, indigenous, or local communities. According to the World Intellectual Property Organ ...
was not utilised and conceivably lost with the introduction of white settlers in the 18th century, recently communities have begun to revitalize these traditional practices. Australian Aboriginal traditional knowledge includes language, cultural, spiritual practices, mythology and land management.


Responses to climate change

Indigenous knowledge Traditional knowledge (TK), indigenous knowledge (IK) and local knowledge generally refer to knowledge systems embedded in the cultural traditions of regional, indigenous, or local communities. According to the World Intellectual Property Organ ...
has been passed down through the generations with the practice of oral tradition. Given the historical relationship between the land and the people and the larger ecosystem Aboriginal Australians choose to stay and adapt in similar ways to their ancestors before them.
Aboriginal Australians Aboriginal Australians are the various Indigenous peoples of the Australian mainland and many of its islands, such as Tasmania, Fraser Island, Hinchinbrook Island, the Tiwi Islands, and Groote Eylandt, but excluding the Torres Strait Islands ...
have observed short and long term environmental changes and are highly aware of weather and climate changes. Recently, elders have begun to be utilised by indigenous and non-indigenous communities to understand
traditional knowledge Traditional knowledge (TK), indigenous knowledge (IK) and local knowledge generally refer to knowledge systems embedded in the cultural traditions of regional, indigenous, or local communities. According to the World Intellectual Property Organ ...
related to land management. This includes seasonal knowledge means indigenous knowledge pertaining to weather, seasonal cycles of plants and animals, and land and landscape management. The seasonal knowledge allows indigenous communities to combat environmental changes and may result in healthier social-ecological systems. Much of traditional landscape and land management includes keeping the diversity of flora and fauna as traditional foodways. Ecological calendars is one traditional framework used by Aboriginal Australian communities. These ecological calendars are way for indigenous communities to organize and communicate traditional ecological knowledge. The ecological calendars includes seasonal weather cycles related to biological, cultural, and spiritual ways of life.


Mitigation

Climate change mitigation Climate change mitigation is action to limit climate change by reducing Greenhouse gas emissions, emissions of greenhouse gases or Carbon sink, removing those gases from the atmosphere. The recent rise in global average temperature is mostly caus ...
focuses on steps taken to reduce greenhouse gas emissions. It is the set of preventative measures taken to curb global warming and climate change. Examples would be investing in clean fuel and using
renewable energy Renewable energy is energy that is collected from renewable resources that are naturally replenished on a human timescale. It includes sources such as sunlight, wind, the movement of water, and geothermal heat. Although most renewable energy ...
such as wind and solar power. Internationally, Australia pledged as part of
Paris Agreement The Paris Agreement (french: Accord de Paris), often referred to as the Paris Accords or the Paris Climate Accords, is an international treaty on climate change. Adopted in 2015, the agreement covers climate change mitigation, Climate change a ...
to reduce emissions by 43% by 2030 and achieve net zero emissions by 2050. Domestically, the
Clean Energy Act 2011 The Clean Energy Act 2011 was an Act of the Australian Parliament, the main Act in a package of legislation that established an Australian emissions trading scheme (ETS), to be preceded by a three-year period of fixed carbon pricing in Australia ...
addresses GHG with an emissions cap, carbon price, and subsidies. Emissions by the electric sector are addressed by Renewable Energy targets at multiple scales,
Australian Renewable Energy Agency The Australian Renewable Energy Agency (ARENA) is an independent agency of the Australian federal government, established in 2012 to manage Australia's renewable energy programs, with the objective of increasing supply and competitiveness of A ...
(ARENA),
Clean Energy Finance Corporation The Clean Energy Finance Corporation (CEFC) is an Australian Government-owned Green Bank that was established to facilitate increased flows of finance into the clean energy sector. As a specialist investor the CEFC at the centre of efforts to hel ...
(CEFC), carbon capture and storage flagships, and feed-in tariffs on solar panels. Emissions by the industrial sector are addressed by the Energy Efficiency Opportunities (EEO) program. Emissions by the building sector are addressed by building codes, minimum energy performance standards, Commercial Building Disclosure program, state energy-saving obligations, and the National Energy Saving Initiative. Emissions by the transportation sector are addressed by reduced fuel tax credits and vehicle emissions performance standards. Emissions by the agricultural sector are addressed by the Carbon Farming Initiative and state land-clearing laws. Emissions by the land use sector are addressed by the Clean Energy Future Package, which consists of the Carbon Farming Futures program, Diversity Fund, Regional Natural Resources Management Planning for Climate Change Fund, Indigenous Carbon Farming Fund, and Carbon Farming Skills program. According to the
CSIRO The Commonwealth Scientific and Industrial Research Organisation (CSIRO) is an Australian Government The Australian Government, also known as the Commonwealth Government, is the national government of Australia, a federal parliamentar ...
and Garnaut Climate Change Review, climate change is expected to have numerous adverse effects on many species, regions, activities and much infrastructure and areas of the economy and public health in Australia. The Stern Report and Garnaut Review on balance expect these to outweigh the costs of mitigation.CSIRO (2006)
Climate Change Impacts on Australia and the Benefits of Early Action to Reduce Global Greenhouse Gas Emissions
The World Resources Institute identifies policy uncertainty and over-reliance on international markets as the top threats to Australia's GHG mitigation.


Policies and legislation to achieve mitigation


Paris agreement

The
Paris agreement The Paris Agreement (french: Accord de Paris), often referred to as the Paris Accords or the Paris Climate Accords, is an international treaty on climate change. Adopted in 2015, the agreement covers climate change mitigation, Climate change a ...
is a legally international agreement adopted at the
COP 21 The 2015 United Nations Climate Change Conference, COP 21 or CMP 11 was held in Paris, France, from 30 November to 12 December 2015. It was the 21st yearly session of the Conference of the Parties (COP) to the 1992 United Nations Framework Conve ...
, its main goal is to limit global warming to below 1.5 degrees Celsius, compared to pre-industrial levels. The
Nationally Determined Contributions A nationally determined contribution (NDC) or intended nationally determined contribution (INDC) is a non-binding national plan highlighting climate change mitigation, including climate-related targets for greenhouse gas emission reductions. These ...
(NDCs) are the plans to fight climate change adapted for each country. Every party in the agreement has different goals based on its own historical climate records and country's circumstances. All the goals for each country are stated in their NDC. Australia's target regarding reductions from 2005 year levels: * 26–28% reduction of greenhouse gases (GHG) until 2030 from 2005 levels.Australia Government. Australia’s Nationally Determined Contributionhttps://www4.unfccc.int/sites/ndcstaging/PublishedDocuments/Australia%20First/Australia%20NDC%20recommunication%20FINAL.PDF Retrieved 2021-05-10. In 2022 the new Australian government officially declared the update of the targets to 43% reduction by 2030 and net zero emissions by 2050. * Gases covered in reductions:
Carbon dioxide Carbon dioxide (chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is transpar ...
(),
Methane Methane ( , ) is a chemical compound with the chemical formula (one carbon atom bonded to four hydrogen atoms). It is a group-14 hydride, the simplest alkane, and the main constituent of natural gas. The relative abundance of methane on Eart ...
(),
Nitrous oxide Nitrous oxide (dinitrogen oxide or dinitrogen monoxide), commonly known as laughing gas, nitrous, or nos, is a chemical compound, an oxide of nitrogen with the formula . At room temperature, it is a colourless non-flammable gas, and has a ...
(),
Hydrofluorocarbon Hydrofluorocarbons (HFCs) are man-made organic compounds that contain fluorine and hydrogen atoms, and are the most common type of organofluorine compounds. Most are gases at room temperature and pressure. They are frequently used in air condi ...
(HFCs),
Perfluorinated compound A perfluorinated compound (PFC) or perfluoro compound is an organofluorine compound containing only carbon-fluorines and C−C bonds, as well as potentially heteroatoms. Perfluorinated compounds have properties that result from the presence of flu ...
(PFCs),
Sulfur hexafluoride Sulfur hexafluoride or sulphur hexafluoride (British spelling) is an inorganic compound with the formula SF6. It is a colorless, odorless, non- flammable, and non-toxic gas. has an octahedral geometry, consisting of six fluorine atoms attached ...
(SF6) and Nitrogen trifluoride (NF3). Countries have different ways to achieve the established goals depending on resources. Australia's developed approach to support the NDC climate change plan is the following: * Enabling new technologies with low emissions and promoting economic growth. * Establish regional hydrogen exports to strengthen the country's industry and fund research in the field and enable distribution. * Improve charging and refueling infrastructure to enable companies and fleets to integrate new more sustainable vehicle technology. * The country has created a development fund whose purpose is for projects concerning carbon dioxide capture. The fund is for storage, use and carbon capture. * Investments in technological development that reduces emissions in the sectors of agriculture, industry, transport and manufacturing. * Climate solution package to increase investment in projects to generate clean energy. The package also includes extra funds to support development in the hard-to-reach sectors. * Australia has a legalised obligation for the major emitting sectors in the country where the emissions are to be kept below their baseline. Australia has through funds such as Australia emission reduction fund contributed with 60 million tonnes reduction of greenhouse gases. The fund enables businesses to earn carbon credits. This is done by storing or preventing emissions through new sustainable techniques.


Adaptation

According to the
IPCC The Intergovernmental Panel on Climate Change (IPCC) is an intergovernmental body of the United Nations. Its job is to advance scientific knowledge about climate change caused by human activities. The World Meteorological Organization (WMO) ...
's 2001 Assessment Report, no matter how much effort is put into mitigating climate change, some amount of climate change cannot be avoided. The report shared that
climate change adaptation Climate change adaptation is the process of adjusting to current or expected effects of climate change.IPCC, 2022Annex II: Glossary öller, V., R. van Diemen, J.B.R. Matthews, C. Méndez, S. Semenov, J.S. Fuglestvedt, A. Reisinger (eds.) InClimat ...
should complement mitigation efforts. Adaptation is the approach that focuses on alleviating current problems brought about by global warming and climate change. It is the attempt to live with the changes in the environment and the economy that global warming has generated and will continue to generate. In short, it involves taking action to deal with the problems brought about by global warming and climate change. Examples include building better flood defences and avoiding the building of residential areas near low-lying, flood-prone areas. In cities with a proven
vulnerability to climate change Climate change vulnerability (or climate vulnerability or climate risk vulnerability) is defined as the " propensity or predisposition to be adversely affected" by climate change. It can apply to humans but also to natural systems (ecosystems). H ...
, investment is likely to require the strengthening of urban infrastructure, including
storm drain A storm drain, storm sewer (United Kingdom, United States, U.S. and Canada), surface water drain/sewer (United Kingdom), or stormwater drain (Australia and New Zealand) is infrastructure designed to Drainage, drain excess rain and ground water ...
systems, water supply and treatment plants, and protection or relocation of
solid waste management Waste management or waste disposal includes the processes and actions required to manage waste from its inception to its final disposal. This includes the collection, transport, treatment and disposal of waste, together with monitoring ...
and power generation facilities. Coastal regions are likely to need large investment in physical infrastructure projects, specifically projects related to the effects of rising sea levels. Projects such as the construction of protective barriers against rising sea levels, the building of dams to retain and manage water, the redesign and development of port facilities and the improvement of the defence systems at coastal areas should be carried out. Federal, state and territory policy makers have supported a National Biodiversity and Climate Change Action Plan that works to adapt to the impacts of climatic change and manage the effects on wildlife.


National government programs


Regional natural resource management (NRM) organisations

Federal natural resource goals, government agencies and non-government organizations established 56 regional natural resource management (NRM) organisations beginning in the mid-1990s. NRM organisations fall under the federal government Natural Heritage Trust. NRM operate according to individual constitutions, usually by the state government and others by community associations. Their boards are appointed by either the local government or community stakeholders. NRM Planning for Climate Fund, put $13.6 million toward helping NRMs plan land use in light of climate change by building a base of detailed climatic information.


National Climate Change Adaptation Programme

The
Minister for Energy and Emissions Reduction The Minister for Climate Change and Energy is a portfolio in the Government of Australia. The current Minister is Chris Bowen. The minister administers his or her portfolios through the Department of Climate Change, Energy, the Environment and ...
has come up with the National Climate Change Adaptation Programme which aims to work with industries, scientific organisations, residents and other governments to create workable solutions.National Climate Change Adaptation Programme
Retrieved 2008-07-31
Some A$14 million over a period of four years (2008–2012) is to be spent on this initiative. The programme has forged strong research links in at-risk areas such as the
Great Barrier Reef The Great Barrier Reef is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over over an area of approximately . The reef is located in the Coral Sea, off the coast of Queensland, ...
. Research conducted in the Great Barrier Reef is focused on developing methods to deal with climate change to protect the reef. It is hoped that this work will create a universal model for sustainable, cost-effective reef development. According to the programme's brochure: "National greenhouse mitigation policies and programmes are projected to reduce emissions by 94 million tonnes by 2010 – the equivalent of removing every motor vehicle in Australia from the road! However, the greenhouse gases already in the atmosphere and the growing emissions from around the world will affect our climate. Adaptation to climate change will complement action to reduce greenhouse gases".


Climate Adaptation Flagship

The Australian
Commonwealth Scientific and Industrial Research Organisation The Commonwealth Scientific and Industrial Research Organisation (CSIRO) is an Australian Government agency responsible for scientific research. CSIRO works with leading organisations around the world. From its headquarters in Canberra, CSIRO ...
(
CSIRO The Commonwealth Scientific and Industrial Research Organisation (CSIRO) is an Australian Government The Australian Government, also known as the Commonwealth Government, is the national government of Australia, a federal parliamentar ...
) started the Climate Adaptation Flagship. Its aim is "enabling Australia to adapt more effectively to the impacts of climate change and variability and informing national planning, regulation and investment decisions". This is part of the National Research Flagships Program. It is designed to bring various stakeholders, i.e. research companies, industries, international connections, eminent scientists and CSIRO, together in hope of delivering practical solutions that address the pressing issues of Australia. The Climate Adaptation Flagship project concerns both climate variability (or non-human causes, as defined by the
United Nations Framework Convention on Climate Change The United Nations Framework Convention on Climate Change (UNFCCC) established an international environmental treaty to combat "dangerous human interference with the climate system", in part by stabilizing greenhouse gas concentrations in th ...
) and climate change. The research budget for this Flagship for the year 2008–09 is close to A$30 million. There are four research prongs to this project: Pathways to adaptation; Sustainable cities and costs; Managing species and natural ecosystems; Adaptive primary industries, enterprises and communities.


National Climate Change Adaptation Research Facility

The National Climate Change Adaptation Research Facility (NCCARF) is hosted by
Griffith University Griffith University is a public research university in South East Queensland on the east coast of Australia. Formally founded in 1971, Griffith opened its doors in 1975, introducing Australia's first degrees in environmental science and Asian s ...
in Queensland and "leads the research community in a national interdisciplinary effort to generate the information needed by decision-makers in government and in vulnerable sectors and communities to manage the risks of climate change impacts." The key roles of NCCARF include: * developing National Adaptation Research Plans to identify critical gaps in the information available to decision-makers * synthesising existing and emerging national and international research on climate change impacts and adaptation and developing targeted communication products * undertaking a program of Integrative Research to address national priorities, and * establishing and maintaining Adaptation Research Networks to link together key researchers and assist them in focusing on national research priorities. The facility is a partnership between the Australian government's Department of Climate Change and Griffith University, with a consortium of funding partners and universities drawn from across the country.


The Local Adaptations Pathway Program

The Australian government is of the view that local government is critical in managing the impacts of climate change and seeks to assist local councils in studying and applying adaptation options. The programme is the Australian government's initiative to enable councils to go through climate change risk assessments and come up with action plans to prepare for the impacts the phenomenon may have on local society. Up to A$50,000 will be released. A list of councils successful in procuring the funding is provided on the programme's website.


Policies and legislation

In November 1981, the
Office of National Assessments The Office of National Assessments (ONA) was an Australian statutory intelligence agency established by the ''Office of National Assessments Act 1977'' as an independent statutory body directly accountable to the Prime Minister of Australia as ...
(intelligence agency) presented prime minister
Malcolm Fraser John Malcolm Fraser (; 21 May 1930 – 20 March 2015) was an Australian politician who served as the 22nd prime minister of Australia from 1975 to 1983, holding office as the leader of the Liberal Party of Australia. Fraser was raised on hi ...
with a classified-confidential assessment noting scientific acceptance of the
greenhouse effect The greenhouse effect is a process that occurs when energy from a planet's host star goes through the planet's atmosphere and heats the planet's surface, but greenhouse gases in the atmosphere prevent some of the heat from returning directly ...
and resultant "measurably warmer" temperatures and "related climatic changes", and also projecting effects of possible doubling and quadrupling of atmospheric levels by the middle and end of the 21st century. The assessment focused on the implications for the country's fossil fuel industry. In the late 1980s and early 1990s, there was clear Australian consensus about the need for action on climate change between the two major political parties. However, following the 1991 recession, incoming right wing governments began framing science of climate change as a continuing debate. In 1997, Australia joined the United States as the only countries to not ratify the
Kyoto Protocol The Kyoto Protocol was an international treaty which extended the 1992 United Nations Framework Convention on Climate Change (UNFCCC) that commits state parties to reduce greenhouse gas emissions, based on the scientific consensus that (part ...
. With voters influenced by events like the
Millennium drought The 2000s drought in Australia, also known as the Millennium drought is said by some to be the worst drought recorded since European settlement. This drought affected most of southern Australia, including its largest cities and largest agricul ...
and 2006 film ''
An Inconvenient Truth ''An Inconvenient Truth'' is a 2006 American documentary film directed by Davis Guggenheim about former United States Vice President Al Gore's campaign to educate people about global warming. The film features a slide show that, by Gore's own e ...
'', both parties went to the 2007 election promising action on climate change, with the then opposition calling climate change the "greatest moral, economic and social challenge of our time". The incumbent Howard government lost, and the incoming Labor government immediately ratified the Kyoto Protocol. In 2009, before a bill could be passed, with the support of opposition leader
Malcolm Turnbull Malcolm Bligh Turnbull (born 24 October 1954) is an Australian former politician and businessman who served as the 29th prime minister of Australia from 2015 to 2018. He held office as leader of the Liberal Party of Australia. Turnbull grad ...
, the opposition changed leaders to
Tony Abbott Anthony John Abbott (; born 4 November 1957) is a former Australian politician who served as the 28th prime minister of Australia from 2013 to 2015. He held office as the leader of the Liberal Party of Australia. Abbott was born in Londo ...
, and supported by
The Greens The Greens or Greens may refer to: Current political parties * Australian Greens, also known as ''The Greens'' * Greens of Andorra * Greens of Bosnia and Herzegovina * Greens of Burkina * Greens (Greece) * Greens of Montenegro *Greens of Serbia *G ...
but for the opposite reason that Rudd's scheme was too weak and potentially locked in failure, blocked Rudd's
Carbon Pollution Reduction Scheme The Carbon Pollution Reduction Scheme (or CPRS) was a cap-and-trade emissions trading scheme for anthropogenic greenhouse gases proposed by the Rudd government, as part of its climate change policy, which had been due to commence in Australia in ...
. In 2010, the Rudd government decided to delay the implementation of the
Carbon Pollution Reduction Scheme The Carbon Pollution Reduction Scheme (or CPRS) was a cap-and-trade emissions trading scheme for anthropogenic greenhouse gases proposed by the Rudd government, as part of its climate change policy, which had been due to commence in Australia in ...
(CPRS) until the end of the first commitment period of the
Kyoto Protocol The Kyoto Protocol was an international treaty which extended the 1992 United Nations Framework Convention on Climate Change (UNFCCC) that commits state parties to reduce greenhouse gas emissions, based on the scientific consensus that (part ...
(ending in 2012). They cited the lack of bipartisan support for the CPRS and slow international progress on climate action as the reasons for the decision. In turn, the delay was strongly criticised by the Federal Opposition as well as community and grassroots action groups such as GetUp. Following the unsuccessful
Copenhagen Summit The 2009 United Nations Climate Change Conference, commonly known as the Copenhagen Summit, was held at the Bella Center in Copenhagen, Denmark, between 7 and 18 December. The conference included the 15th session of the Conference of the Partie ...
, the Rudd was replaced by Gillard as Prime Minister, who stated that "there will be no '
carbon tax A carbon tax is a tax levied on the carbon emissions required to produce goods and services. Carbon taxes are intended to make visible the "hidden" social costs of carbon emissions, which are otherwise felt only in indirect ways like more sev ...
' under the government I lead". The Gillard Labor government established several government entities to manage Australia's response to climate change: # The
Climate Change Authority The Climate Change Authority (CCA) is an Australian Government statutory agency responsible for providing independent advice to government on climate change policy. It was established by and operates under the ''Climate Change Authority Act 201 ...
, an independent statutory body that provides advice and performs research for the federal government on climate change. # The
Clean Energy Regulator The Clean Energy Regulator is an Australian independent statutory authority responsible for implementing legislation to reduce carbon emissions and increase the use of clean energy. Based in Canberra, Australia, the Clean Energy Regulator was ...
, an independent statutory body that administers federal government schemes to measure and reduce Australia's greenhouse gas emissions. # The
Australian Renewable Energy Agency The Australian Renewable Energy Agency (ARENA) is an independent agency of the Australian federal government, established in 2012 to manage Australia's renewable energy programs, with the objective of increasing supply and competitiveness of A ...
(ARENA), a corporate body that manages renewable energy programs. # The
Clean Energy Finance Corporation The Clean Energy Finance Corporation (CEFC) is an Australian Government-owned Green Bank that was established to facilitate increased flows of finance into the clean energy sector. As a specialist investor the CEFC at the centre of efforts to hel ...
(CEFC), a government-owned corporation that invests in clean energy technologies. In 2011, Parliament passed the ''
Clean Energy Act 2011 The Clean Energy Act 2011 was an Act of the Australian Parliament, the main Act in a package of legislation that established an Australian emissions trading scheme (ETS), to be preceded by a three-year period of fixed carbon pricing in Australia ...
'', which introduced
carbon pricing in Australia A carbon pricing scheme in Australia was introduced by the Gillard Labor minority government in 2011 as the '' Clean Energy Act 2011'' which came into effect on 1 July 2012. Emissions from companies subject to the scheme dropped 7% upon its i ...
, colloquially known as a 'carbon tax'. It required large businesses, defined as those emitting over 25,000 tons of
carbon dioxide equivalent Global warming potential (GWP) is the heat absorbed by any greenhouse gas in the atmosphere, as a multiple of the heat that would be absorbed by the same mass of carbon dioxide (). GWP is 1 for . For other gases it depends on the gas and the time ...
annually, to purchase emissions permits. The strong backlash lead by opposition leader Abbott led to her being replaced as leader by Rudd, then Abbott at the next election. Under his leadership, Australia became the first country to repeal a carbon pricing program. In 2015, Abbott was replaced as Prime Minister by Minister for Communications Malcolm Turnbull under the condition that his climate policy would not change. Australia attended the
2015 United Nations Climate Change Conference The 2015 United Nations Climate Change Conference, COP 21 or CMP 11 was held in Paris, France, from 30 November to 12 December 2015. It was the 21st yearly session of the Conference of the Parties (COP) to the 1992 United Nations Framework Conve ...
and adopted the
Paris Agreement The Paris Agreement (french: Accord de Paris), often referred to as the Paris Accords or the Paris Climate Accords, is an international treaty on climate change. Adopted in 2015, the agreement covers climate change mitigation, Climate change a ...
. In limiting further action on climate change, Australia joins Russia, Turkey and Brazil in citing US
President Trump Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who served as the 45th president of the United States from 2017 to 2021. Trump graduated from the Wharton School of the University of Pe ...
's promise to withdraw from the Paris Agreement. In 2018, Turnbull was replaced by
Scott Morrison Scott John Morrison (; born 13 May 1968) is an Australian politician. He served as the 30th prime minister of Australia and as Leader of the Liberal Party of Australia from 2018 to 2022, and is currently the member of parliament (MP) for t ...
as leader of the
Liberal Party The Liberal Party is any of many political parties around the world. The meaning of ''liberal'' varies around the world, ranging from liberal conservatism on the right to social liberalism on the left. __TOC__ Active liberal parties This is a li ...
and Prime Minister. Morrison won the 2019 election with an unchanged climate policy. In June 2021, the ''Sustainable Development Report 2021'' scored Australia last out of 193 United Nations member countries for action taken to reduce global greenhouse gas emissions, scoring 10 out of 100 in an assessment of fossil fuel emissions, emissions associated with imports and exports, and policies for pricing carbon. In May 2022, the
Coalition A coalition is a group formed when two or more people or groups temporarily work together to achieve a common goal. The term is most frequently used to denote a formation of power in political or economical spaces. Formation According to ''A Gui ...
lost the federal election to the Labor Party, led by
Anthony Albanese Anthony Norman Albanese ( or ; born 2 March 1963) is an Australian politician serving as the 31st and current prime minister of Australia since 2022. He has been leader of the Australian Labor Party (ALP) since 2019 and the member of parlia ...
. In a machinery of government change, a new Department of Climate Change, Energy, the Environment and Water will be established. The new government has committed to a 43% reduction in Australia's emissions by 2030 (compared to 2005 levels), and net zero emissions by 2050.


International cooperation

Internationally,
Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
contributed to the creation of the Asia Pacific Rain Forest Partnership, International Coral Reef Initiative, International Partnership for Blue Carbon, Mission Innovation, Clean Energy Ministerial Forum,
International Solar Alliance The International Solar Alliance (ISA) is an alliance of 123 signatory countries, most being sunshine countries, which lie either completely or partly between the Tropic of Cancer and the Tropic of Capricorn. The primary objective of the allia ...
, and the
Kigali Amendment The Kigali Amendment to the Montreal Protocol is an international agreement to gradually reduce the consumption and production of hydrofluorocarbons (HFCs). It is a legally binding agreement designed to create rights and obligations in internatio ...
to the
Montreal Protocol The Montreal Protocol is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion Ozone depletion consists of two related events observed sinc ...
. The government has also provided $1 billion to assist
developing countries A developing country is a sovereign state with a lesser developed industrial base and a lower Human Development Index (HDI) relative to other countries. However, this definition is not universally agreed upon. There is also no clear agreem ...
in reducing GHG emissions, partly through the United Nations Framework Convention on Climate Change
Green Climate Fund The Green Climate Fund (GCF) is a fund established within the framework of the UNFCCC as an operating entity of the Financial Mechanism to assist developing countries in adaptation and mitigation practices to counter climate change. The GCF is ba ...
. Australia's scientists also provide data on climate, emissions, impacts, and mitigation options for the
Intergovernmental Panel on Climate Change The Intergovernmental Panel on Climate Change (IPCC) is an intergovernmental body of the United Nations. Its job is to advance scientific knowledge about climate change caused by human activities. The World Meteorological Organization (WMO) a ...
assessments. Under the
Paris Agreement The Paris Agreement (french: Accord de Paris), often referred to as the Paris Accords or the Paris Climate Accords, is an international treaty on climate change. Adopted in 2015, the agreement covers climate change mitigation, Climate change a ...
, Australia has committed to reducing emission by 26-28% below 2005 levels. This would mean reducing emissions by half per capita and by two-thirds across the economy. The Department of Environment and Energy noted in a 2017 review that no one policy could achieve what multiple, sector-specific ones have. This approach has manifested in Australia meeting its first Kyoto Protocol target. Australia is now bound to reducing emissions to at least 5% by 2020 under the Copenhagen Accord and Cancun Agreements and 0.5% less than 1990 levels by 2020 under their second target for the Kyoto Protocol. While Australia opposed a 1.5 °C target at the 2015 negotiations for the Paris Agreement, in 2019, they supported the Kainaki II Declaration of the
Pacific Islands Forum The Pacific Islands Forum (PIF) is an inter-governmental organization that aims to enhance cooperation between countries and territories of Oceania, including formation of a trade bloc and regional peacekeeping operations. It was founded in 197 ...
, which included this target. In 2022, Australia discussed hosting COP29 with its Pacific island neighbours in 2024 at the
Pacific Islands Forum The Pacific Islands Forum (PIF) is an inter-governmental organization that aims to enhance cooperation between countries and territories of Oceania, including formation of a trade bloc and regional peacekeeping operations. It was founded in 197 ...
.


Society and culture


Politics

Despite the support of a clear
scientific consensus Scientific consensus is the generally held judgment, position, and opinion of the majority or the supermajority of scientists in a particular field of study at any particular time. Consensus is achieved through scholarly communication at confe ...
, climate change has been a divisive or controversial issue in
Australian politics The politics of Australia take place within the framework of a federal parliamentary constitutional monarchy. Australia has maintained a stable liberal democratic political system under its Constitution, one of the world's oldest, since F ...
since the 2000s. It has sometimes been referred to as a "
culture war A culture war is a cultural conflict between social groups and the struggle for dominance of their values, beliefs, and practices. It commonly refers to topics on which there is general societal disagreement and polarization in societal value ...
" in the country.
Conservatives Conservatism is a cultural, social, and political philosophy that seeks to promote and to preserve traditional institutions, practices, and values. The central tenets of conservatism may vary in relation to the culture and civilization in ...
have generally opposed climate mitigation policies and renewable energy, instead favouring or supporting the country's
coal Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed when dea ...
and fossil fuels industries, which make up a large part of the economy. Proposed
carbon pricing Carbon pricing (or pricing), also known as cap and trade (CAT) or emissions trading scheme (ETS), is a method for nations to reduce global warming. The cost is applied to greenhouse gas emissions in order to encourage polluters to reduce the co ...
during the premiership of
Julia Gillard Julia Eileen Gillard (born 29 September 1961) is an Australian former politician who served as the 27th prime minister of Australia from 2010 to 2013, holding office as leader of the Australian Labor Party (ALP). She is the first and only ...
proved highly divisive, and was later repealed under
Tony Abbott Anthony John Abbott (; born 4 November 1957) is a former Australian politician who served as the 28th prime minister of Australia from 2013 to 2015. He held office as the leader of the Liberal Party of Australia. Abbott was born in Londo ...
. Climate change was a key issue in the 2022 federal election, where the
Australian Labor Party The Australian Labor Party (ALP), also simply known as Labor, is the major centre-left political party in Australia, one of two major parties in Australian politics, along with the centre-right Liberal Party of Australia. The party forms the f ...
and
teal independents The teal independents, sometimes simply referred to as teals, are a loosely-aligned group of independent and minor party politicians in Australian politics. They have been characterised as strongly advocating for increased action to mitigate cl ...
made gains in part due to promoting environmental policies.


Activism


Protests

* Rising Tide, a Newcastle-based crew, have organised actions to build pressure for a shift from coal dependence. In February 2007, more than 100 small and medium-sized craft, including swimmers and people on surfboards, gathered in the harbour as well as on its shores as part of the peaceful demonstration. No-one was arrested even though the group attempted to surround a large freight ship as it entered the port. * In 2005,
Greenpeace Greenpeace is an independent global campaigning network, founded in Canada in 1971 by Irving Stowe and Dorothy Stowe, immigrant environmental activists from the United States. Greenpeace states its goal is to "ensure the ability of the Earth t ...
activists chained themselves to a loader in a Gippsland power station's coal pit. * Young people from the Real Action On Climate Change shut down two coal-fired power stations in September 2007. * In January 2020, protests were held in Sydney, Canberra, Melbourne, Victoria, Brisbane, Hobart, and outside the Australian High Commission in London. Prime Minister
Scott Morrison Scott John Morrison (; born 13 May 1968) is an Australian politician. He served as the 30th prime minister of Australia and as Leader of the Liberal Party of Australia from 2018 to 2022, and is currently the member of parliament (MP) for t ...
was criticized for climate denial in the wake of the
bushfires A wildfire, forest fire, bushfire, wildland fire or rural fire is an unplanned, uncontrolled and unpredictable fire in an area of combustible vegetation. Depending on the type of vegetation present, a wildfire may be more specifically identif ...
.
Extinction Rebellion Extinction Rebellion (abbreviated as XR) is a global environmental movement, with the stated aim of using nonviolent civil disobedience to compel government action to avoid tipping points in the climate system, biodiversity loss, and the risk o ...
held rallies in London, Berlin, Madrid, Copenhagen and Stockholm calling for stronger climate action.


Youth Climate Movement


Australian Student Environment Network

Australian Student Environment Network The Australian Student Environment Network (ASEN) is the national network of many campus environment collectives in Australia, formed at the 1997 Students and Sustainability convergence in Townsville. People from ASEN facilitate communication betw ...
(ASEN) is a non-profit, grassroots network of student activists from universities, TAFEs and secondary schools across Australia. The network aims to create a generation of change-agents actively working to achieve environmental and social justice within the Australian and world context. The network has a strong focus on equipping young people with organising and facilitation skills and provides first-hand campaigning experience in environmental advocacy and grassroots organising. Annually, the ASEN summer training camp brings together students for one week of facilitated skill sharing, workshopping, campaign planning and strategising. ASEN has multiple campaign foci including climate change, coal mining, green jobs, campus sustainability (energy/emissions and recycled paper), nuclear power, Gold and Uranium mining and the genocide of Indigenous peoples. In addition, the network builds and lives-out alternative ideas and lifestyles through community projects such as co-operatives (food, housing and transport), on-campus permaculture gardens and by investing in community supported agriculture.


Legal action

* Groups including Rising Tide and Queensland Conservation have initiated legal challenges to coal mines under the Commonwealth EPBC legislation. In late 2006, Queensland Conservation lodged an objection to the greenhouse gas emissions from a large coal mine expansion proposed by Xstrata Coal Queensland Pty Ltd. QC's action aimed to have the true costs of the greenhouse gas emissions from coal mining recognised. The Newlands Coal Mine Expansion will produce 28.5 million tonnes of coal over its fifteen years of operation. The mining, transport and use of this coal will emit 84 million tonnes of into the atmosphere. Queensland Conservation aims to have reasonable and practical measures imposed on new mines to avoid, reduce or offset the emissions from the mining, transport and use of their coal. The Land and Resources Tribunal ruled against the case. * Peter Gray's win in the NSW Planning and Environment Court pushing the state government to consider climate change impacts in its assessment of new developments—in particular in relation to its failure to do so with Centennial Coal's proposed Anvil Hill mine.


Policy advocacy

* WWF Australia's "Clean Energy Future for Australia" outlines a range of policy recommendations for meeting electricity needs sustainably. * TEAR Australia has joined with other aid and development organisations on the Climate Change and Development NGO Roundtable.


Campaigns and events


Youth

* Adopt a Politician The AYCC supports numerous projects by harnessing the knowledge, skills and experience of its coalition member groups. In August 2007, the AYCC launched their federal election campaign "Adopt a Politician" providing young voters and non-voters a platform on which to engage with their local community on the issue and pressure their federal candidates to save their future by committing to better policies. * Switched On In October 2007, the AYCC and ASEN organised the largest gathering of young climate activists from around the country at the conference "Switched On" in the Blue Mountains west of Sydney. The conference aimed to facilitate critical thinking on climate change and its solutions, share knowledge and skills for organising around climate change and provide support and networking opportunities for the growing youth climate movement in Australia. * Kyoto In November 2007, youth delegates from the AYCC attended the Kyoto negotiations in Bali where they collaborated with other national youth networks and young climate activists from around the world. * Community awareness SYCAN-the Sydney Youth Climate Action Network was founded at OzGreen's Youth Leading Australia Congress in 2009. SYCAN is working in local communities to reduce emissions through education and practical solutions. SYCAN is a non-profit, non-partisan group of youth volunteers. SYCAN as of January 2011 currently has two branches (Northern Beaches and Inner-West areas).


Non-youth

* Walk Against Warming: annual community event supported by several NGOs and Australian Conservation Councils. Drew 40,000 in Sydney in November 2006 and 2007, 2008, December 2009 and August 2010. Forty thousand attended the 2009 Melbourne walk. * Sustainability Convergence – a joint project based in Melbourne, Australia that involves a range of individuals and community groups from cross movements and sectors aiming to harness the momentum for action on climate change. The Sustainable Living Foundation provides the basic platform of the event and works with a range of groups to co-host the activities. * The Rainforest Information Centre plans a road show of Eastern states in the first half of 2007. The workshops will comprise a brief summary of the problem and forty-minute presentation on despair and empowerment before encouraging participants to consider how to get active at a neighbourhood or community level. The intention is to establish new climate action groups and, where they exist already, to provide support, direction and connections. * The Gaia Foundation in Western Australia has been running a series of "Climate Change: Be the Change" workshops around Perth, aimed at getting individuals to undertake personal projects to limit their greenhouse gas emissions. * GetUp! Organised online action around nine key campaigns, including climate action. Promoting five policy asks. * Say Yes Australia campaign including
Say Yes demonstrations The "Say Yes" demonstrations were a series of simultaneous political demonstrations held in major cities across Australia on 5 June 2011 to coincide with World Environment Day. The gatherings were organised as demonstrations of some public sup ...
of 5 June 2011, in which 45,000 people demonstrated in every major city nationwide in support of a price on carbon pollution.


Community engagement

Initiatives: * WWF recruited companies to participate in Australia's first Earth Hour on 31 March 2007. Participating companies turned off their lights for one hour from 7:30 pm. Cities across Europe turned off lights on public buildings including the Eiffel Tower and Colosseum during January 2007 to mark the release of an Intergovernmental Panel on Climate Change report. Householders were also encouraged to switch off electrical appliances. * Another WWF initiative called Climate Witness recruits individuals who can share their stories of climate change impacts and their efforts to adapt to changes. * With support from the Uniting Church and Catholic Earthcare, ACF and the National Council of Churches Australia have produced a brochure, Changing Climate, Changing Creation, which is being distributed to churches across the country. The brochure encourages Australian Christians to: write to or visit their federal MP and ask what they are doing to address the threat of climate change; find out more about reducing energy and water usage and waste at home; and take action on climate change within churches and small groups.
Ipswich Green
was formed by an automotive dealer to provide like minded businesses a way of engaging the community regarding carbon emissions. * The Wildlife Hospital, founded by Steve Irwin and managed by his daughter Bindi Irwin help rescue animals hurt by the bushfires in 2019–2020. * In the Hunter Valley, alliances are being developed between unionists, environmentalists and other stakeholders. The Anvil Hill Alliance includes community and environment groups in NSW opposed to the expansion of coal mines in his high conservation value region. Their 'statement' has been endorsed by 28 groups. Literature Janette Hartz-Karp writes that "to deal with the complexity of climate change and oil dependency, we need a radical rethink of how to engage citizens in meaningful, influential dialogue" Deliberative democracy presents a wide range of strategies to involve communities in these important decisions.


Coalitions and alliances

* The Climate Action Network of Australia (part of
Climate Action Network Climate Action Network - International (CAN) is a global network of over 1,300 environmental non-governmental organisations in over 130 countries working to promote government and individual action to limit human-induced climate change to ecolo ...
) coordinate communication and collaboration between 38 Australian NGOs campaigning around climate change. * ClimateMovement.org.au is an initiative of the Nature Conservation Council. The web site includes is a hub for Climate Action Groups around Australia to connect with each other, access resources, share success stories and collaborate. It is structured around a collective blog for Climate Action Groups as well as a directory and mapping of all the community climate groups in Australia, a community events calendar and a resources section. The project encourages people to start and register new climate action groups. * Friends of the Earth's Climate Justice campaign and work with Pacific Island and faith-based communities. * The Six Degrees campaign is building collaborations with coal affected communities across Queensland, particularly in agricultural areas that are threatened by new coal mines and other extractive activities. The collective has also organised a number of community-led direct actions to highlight Queensland's dangerous dependence on the coal industry, including the disruption of the Tarong Coal-fired power station which supplies electricity to the Brisbane metropolis


Projected impacts by location

The impacts of climate change will vary significantly across Australia. The Australian Government appointed Climate Commission have prepared summary reports on the likely impacts of climate change for regions across Australia, including: Queensland, NSW, Victoria and Tasmania.


Capital cities


Adelaide

Adelaide will get hotter and drier with rainfall predicted to decline 8% to 29% by 2090 and average temperature to increase between 4 and 0.9 degrees. The number of days above 35 degrees will increase by 50% in 2090 and the number of days above 40 degrees will double. Bringing it close to
Northampton, Western Australia Northampton is a town north of Geraldton, in the Mid West region of Western Australia. At the 2011 census, the town had a population of 868.The town contains a National Trust building. The town lies on the North West Coastal Highway. Originally ...
, for temperature and
Kadina, South Australia Kadina ( ) is a town on the Yorke Peninsula of the Australian state of South Australia, approximately 144 kilometres north-northwest of the state capital of Adelaide. The largest town of the Peninsula, Kadina is one of the three Copper Triangle ...
, for rainfall. Sea levels will rise with predictions between 39 to 61 cm by 2090. And extreme seas are predicted to rise as well, with the CSIRO predicting buildings in Port Adelaide would need to be raised by 50 to 81 cm to keep the amount of flooding incidents the same as recorded between 1986 and 2005.


Brisbane

In a RCP 4.5 scenario Brisbane's temperature will be similar to that of
Rockhampton Rockhampton is a city in the Rockhampton Region of Central Queensland, Australia. The population of Rockhampton in June 2021 was 79,967, Estimated resident population, 30 June 2018. making it the fourth-largest city in the state outside of the ...
today while rainfall will be closest to
Gympie Gympie ( ) is a city and a Suburbs and localities (Australia), locality in the Gympie Region, Queensland, Australia. In the Wide Bay-Burnett District, Gympie is about north of the state capital, Brisbane. The city lies on the Mary River (Queen ...
. The
CSIRO The Commonwealth Scientific and Industrial Research Organisation (CSIRO) is an Australian Government The Australian Government, also known as the Commonwealth Government, is the national government of Australia, a federal parliamentar ...
predicts rainfall in Brisbane will fall between -23% (235 mm) and -4% (45.3 mm) annually by 2090 while temperature will rise between 4.2° and 0.9°. The number of hot days and hot nights will double by 2050, with many people needing to avoid outdoor activity in summer. Further urban growth increases the number of hot nights even further. Hot nights increase deaths amongst the elderly. Rainfall will be deposited in less frequent more intense rain events, fire days will also get more frequent while frost days will decrease. Sea levels are predicted to rise by 80 cm by 2100 and there will be more frequent sea level extremes.


Darwin

In a RCP 4.5 scenario Darwin's temperature will be similar to that of Daly River now, with its rainfall most like that of Milikapiti. In a RCP 8.5 scenario, indicating higher greenhouse gas emissions, Darwin's temperature loses any close comparison in Australia being significantly hotter than every town in Australia is today (with the exclusion of Halls Creek in Autumn).


Sydney

Suburbs of
Sydney Sydney ( ) is the capital city of the state of New South Wales, and the most populous city in both Australia and Oceania. Located on Australia's east coast, the metropolis surrounds Sydney Harbour and extends about towards the Blue Mountain ...
like Manly,
Botany Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek w ...
,Most at risk: Study reveals Sydney's climate change 'hotspots' – ABC News (Australian Broadcasting Corporation)
/ref>
Narrabeen Narrabeen is a beachside suburb in northern Sydney, in the state of New South Wales, Australia. Narrabeen is 23 kilometres north-east of the Sydney central business district, in the local government area of Northern Beaches Council and is ...
,
Port Botany Port Botany is a suburb in south-eastern Sydney, in the state of New South Wales, Australia. Port Botany is located 12 kilometres south-east of the Sydney central business district, in the local government area of the City of Randwick. Port Bo ...
, and Rockdale, which lie on rivers like the
Parramatta Parramatta () is a suburb and major Central business district, commercial centre in Greater Western Sydney, located in the state of New South Wales, Australia. It is located approximately west of the Sydney central business district on the ban ...
, face risks of flooding in low-lying areas such as parks (like Timbrell Park and Majors Bay Reserve), or massive expenses in rebuilding seawalls to higher levels. Sea levels are predicted to rise between 38 and 66 cm by 2090. Temperature in Sydney will increase between 0.9° and 4.2°, while rainfall will decrease between -23% and -4% by 2090. Bringing Sydney's climate close to that of Beaudesert today (under a RCP 8.5 scenario). Different parts of Sydney will warm differently with the greatest impact expected in
Western Sydney Western may refer to: Places *Western, Nebraska, a village in the US *Western, New York, a town in the US *Western Creek, Tasmania, a locality in Australia *Western Junction, Tasmania, a locality in Australia *Western world, countries that id ...
and Hawkesbury, these areas can expect 5 to 10 additional hot days by 2030. Similarly future rainfall patterns will be different to those today, with more rain expected to fall in summer and autumn and less expected in Winter and Spring. Fire danger days will increase in number by 2070.


Melbourne

Sea levels are projected to rise between 0.37 cm and 0.59 cm at Williamstown (the closest covered point) by 2090. At the higher end of this scale areas in and around Melbourne would be impacted. With some of the most vulnerable areas being the Docklands development and several marinas and berths in Port Phillip. Melbourne's climate will become similar in terms of total rainfall and average temperature to that of Dubbo today, with temperatures warming between 0.9° and 3.8° and total annual rainfall falling between -10% and -4% by 2090. Rainfall patterns will also change with 20% less rainfall predicted during spring in 2050, which may impact the severity of summer bushfires. The increases in temperature and decrease in rainfall will have a series of follow on effects on the city, including a possible 35% reduction in trees in Melbourne by 2040. And more frequent ambulance callouts and more deaths due to heatwaves. Climate change will cost Melbourne City $12.6bn by 2050.


Perth

In 2090 Perth is predicted to have the rainfall of
Yanchep Yanchep is an outer coastal suburb of Perth, Western Australia, north of the Perth CBD. It is a part of the City of Wanneroo local government area. Originally a small crayfishing settlement, it was developed by entrepreneur Alan Bond in the 1 ...
today and the temperature of
Geraldton Geraldton (Wajarri: ''Jambinu'', Wilunyu: ''Jambinbirri'') is a coastal city in the Mid West region of the Australian state of Western Australia, north of the state capital, Perth. At June 2018, Geraldton had an urban population of 37,648. ...
using the RCP 4.5 scenario. Rainfall is predicted to fall between -29% (-226 mm) and -8% (-66 mm) and temperature predicted to rise between 0.9° and 4°. Perth may see the number of days above 35° increase from 28 per year on average to 36 in 2030, and to between 40 and 63 in 2090. While frost days will decrease. Rainfall will increase in intensity while decreasing on average. Drought days in the south west as a whole may increase by as much as 80% versus 20% for Australia. The danger from fire will increase with more fire days for all of Western Australia.


Hobart

By 2090 Hobart's climate will warm between 3.8° and 0.9°, rainfall will decline between 4% and 10%. The temperature pattern will be similar to Port Lincoln while rainfall will be closer to Condoblin's today in a RCP 8.5 scenario. Warm spells are likely to last longer and rainfall will trend to more intense rain events dumping less rain annually, increasing the risk of erosion and flooding. Flooding on the Derwent river will become more regular and extreme with a current 1-in-100-year event being possibly a 2-to-6-year event in 2090. Hobart's fire season will get longer.


Historical aspects


Pre-instrumental climate change

Paleoclimatic records indicate that during glacial maxima Australia was extremely arid, with plant
pollen Pollen is a powdery substance produced by seed plants. It consists of pollen grains (highly reduced microgametophytes), which produce male gametes (sperm cells). Pollen grains have a hard coat made of sporopollenin that protects the gametophyt ...
fossils showing deserts as far as northern Tasmania and a vast area of less than 12% vegetation cover over all of
South Australia South Australia (commonly abbreviated as SA) is a state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest of Australia's states and territories ...
and adjacent regions of other states. Forest cover was largely limited to sheltered areas of the east coast and the extreme southwest of Western Australia. During these glacial maxima the climate was also much colder and windier than today. Minimum temperatures in winter in the centre of the continent were as much as 9 °C (16.9F°) lower than they are today. Hydrological evidence for dryness during glacial maxima can also be seen at major lakes in Victoria's Western District, which dried up between around 20,000 and 15,000 years ago and re-filled from around 12,000 years ago. During the early
Holocene The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene togethe ...
, there is evidence from
Lake Frome Lake Frome / Munda is a large endorheic lake in the Australian state of South Australia to the east of the Northern Flinders Ranges. It is a large, shallow, unvegetated salt pan, long and wide, lying mostly below sea level and having a total s ...
in South Australia and Lake Woods near
Tennant Creek Tennant Creek ( wrm, Jurnkkurakurr) is town located in the Northern Territory of Australia. It is the seventh largest town in the Northern Territory, and is located on the Stuart Highway, just south of the intersection with the western termin ...
that the climate between 8,000 and 9,500 years ago and again from 7,000 to 4,200 years ago was considerably wetter than over the period of instrumental recording since about 1885. The research that gave these records also suggested that the rainfall flooding Frome was certainly summer-dominant rainfall because of pollen counts from grass species. Other sources suggest that the Southern Oscillation may have been weaker during the early Holocene and rainfall over northern Australia less variable as well as higher. The onset of modern conditions with periodic wet season failure is dated at around 4,000 years before the present. In southern Victoria, there is evidence for generally wet conditions except for a much drier spell between about 3,000 and 2,100 years before the present, when it is believed
Lake Corangamite Lake Corangamite , a hypersaline endorheic lake, is located near Colac in the Lakes and Craters region of the Victorian Volcanic Plains of south-west Victoria, Australia. The lake's salinity levels have increased dramatically as the lake level ...
fell to levels well below those observed between European settlement and the 1990s. After this dry period, Western District lakes returned to their previous levels fairly quickly and by 1800 they were at their highest levels in the forty thousand years of record available. Elsewhere, data for most of the Holocene are deficient, largely because methods used elsewhere to determine past climates (like tree-ring data) cannot be used in Australia owing to the character of its soils and climate. Recently, however,
coral Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and sec ...
cores have been used to examine rainfall over those areas of
Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_ ...
draining into the
Great Barrier Reef The Great Barrier Reef is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over over an area of approximately . The reef is located in the Coral Sea, off the coast of Queensland, ...
. The results do not provide conclusive evidence of man-made climate change, but do suggest the following: * There has been a marked increase in the frequency of very ''wet'' years in Queensland since the end of the
Little Ice Age The Little Ice Age (LIA) was a period of regional cooling, particularly pronounced in the North Atlantic region. It was not a true ice age of global extent. The term was introduced into scientific literature by François E. Matthes in 1939. Ma ...
, a theory supported by there being no evidence for any large Lake Eyre filling during the LIA. * The dry era of the 1920s and 1930s may well have been the driest period in Australia over the past four centuries. A similar study, not yet published, is planned for coral reefs in Western Australia. Records exist of floods in a number of rivers, such as the
Hawkesbury Hawkesbury or Hawksbury may refer to: People *Baron Hawkesbury, or Charles Jenkinson, 1st Earl of Liverpool (1727-1808), English statesman Places ;Geography *Hawkesbury Island, an island in British Columbia, Canada * Hawkesbury Island, Queensland ...
, from the time of first settlement. These suggest that, for the period beginning with th
first European settlement
the first thirty-five years or so were wet and were followed by a much drier period up to the mid-1860s, when usable instrumental records started.


Development of an instrumental network for climate records

Although
rain gauge A rain gauge (also known as udometer, pluvia metior, pluviometer, ombrometer, and hyetometer) is an instrument used by meteorologists and hydrologists to gather and measure the amount of liquid precipitation over a predefined area, over a period o ...
s were installed privately by some of the earliest settlers, the first instrumental climate records in Australia were not compiled until 1840 at
Port Macquarie Port Macquarie is a coastal town in the local government area of Port Macquarie-Hastings. It is located on the Mid North Coast of New South Wales, Australia, about north of Sydney, and south of Brisbane. The town is located on the Tasman Sea co ...
. Rain gauges were gradually installed at other major centres across the continent, with the present gauges in Melbourne and Sydney dating from 1858 and 1859, respectively. In eastern Australia, where the continent's first large-scale agriculture began, a large number of rain gauges were installed during the 1860s and by 1875 a comprehensive network had been developed in the "settled" areas of that state. With the spread of the pastoral industry to the north of the continent during this period, rain gauges were established extensively in newly settled areas, reaching Darwin by 1869,
Alice Springs Alice Springs ( aer, Mparntwe) is the third-largest town in the Northern Territory of Australia. Known as Stuart until 31 August 1933, the name Alice Springs was given by surveyor William Whitfield Mills after Alice, Lady Todd (''née'' Al ...
by 1874, and the Kimberley,
Channel Country The Channel Country is a region of outback Australia mostly in the state of Queensland but also in parts of South Australia, Northern Territory and New South Wales. The name comes from the numerous intertwined rivulets that cross the region ...
and
Gulf Savannah The Gulf Country is the region of woodland and savanna grassland surrounding the Gulf of Carpentaria in north western Queensland and eastern Northern Territory on the north coast of Australia. The region is also called the Gulf Savannah. It ...
by 1880. By 1885, most of Australia had a network of rainfall reporting stations adequate to give a good picture of climatic variability over the continent. The exceptions were remote areas of western Tasmania, the ''extreme'' southwest of Western Australia,
Cape York Peninsula Cape York Peninsula is a large peninsula located in Far North Queensland, Australia. It is the largest unspoiled wilderness in northern Australia.Mittermeier, R.E. et al. (2002). Wilderness: Earth’s last wild places. Mexico City: Agrupación ...
,Hunt, H.A. ''Results of rainfall observations made in Queensland: including all available annual rainfall totals from 1040 stations for all years of record up to 1913, together with maps and diagrams''; published 1914 by Commonwealth Bureau of Meteorology the northern Kimberley and the deserts of northwestern South Australia and southeastern Western Australia. In these areas good-quality climatic data were not available for quite some time after that. Temperature measurements, although made at major population centres from days of the earliest rain gauges, were generally not established when rain gauges spread to more remote locations during the 1870s and 1880s. Although they gradually caught up in number with rain gauges, many places which have had rainfall data for over 125 years have only a few decades of temperature records.


See also

*
Carbon capture and storage in Australia Carbon capture and storage (CCS) is a technology that can capture carbon dioxide emissions produced from fossil fuels in electricity, industrial processes which prevents from entering the atmosphere. Carbon capture and storage is also used to sequ ...
* Climate change on agriculture *
Climate Institute of Australia The Climate Institute was a Sydney-based policy think-tank established in 2005 to encourage progressive policies for managing climate change in Australia. Research work undertaken by the institute included an analysis of the vulnerability of spo ...
*
Climate of Australia Australia's climate is governed mostly by its size and by the hot, sinking air of the subtropical high pressure belt (subtropical ridge or Australian High). This moves north-west and north-east with the seasons. The climate is variable, with ...
*
Environmental issues in Australia Environmental issue in Australia describes a number of environmental issues which affect the environment of Australia. There are a range of such issues, some of the relating to conservation in Australia while others, for example the deteriora ...
* '' Living in the Hothouse: How Global Warming Affects Australia'', a 2005 book by Ian Lowe *
El Niño–Southern Oscillation El Niño–Southern Oscillation (ENSO) is an irregular periodic variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean, affecting the climate of much of the tropics and subtropics. The warming phase of the sea te ...
*
Effects of the El Niño–Southern Oscillation in Australia Effects of the El Niño–Southern Oscillation in Australia is present across most of Australia, particularly the north and the east, and is one of the main climate drivers of the country. Associated with seasonal abnormality in many areas in th ...
*
New South Wales Greenhouse Gas Abatement Scheme The New South Wales Greenhouse Gas Abatement Scheme (also known as GGAS) was a mandatory greenhouse gas emissions trading scheme that aimed to lower greenhouse gas emissions in New South Wales, Australia, to 7.27 tonnes of carbon dioxide per c ...
* Plug-in electric vehicles in Australia * Solar Cities in Australia *
Sustainable Development Goals and Australia The "Sustainable Development Goals and Australia" describe how Australia participates in the Sustainable Development Goals, Sustainable Development Goals (SDGs) process. The SDGs are a collection of 17 global goals designed to be a "blueprint to a ...
*
Water restrictions in Australia Water restrictions have been enacted in many cities and regions in Australia, which is the Earth's driest inhabited continent, in response to chronic water shortages resulting from the widespread drought. Depending upon the location, these can ...


References


External links


Climate Action Network Australia
– the Australian branch of a worldwide network of NGOs
Range Extension Database and Mapping Project, Australia
– ecological monitoring project in the marine environment
National Climate Change Adaptation Programme brochure


{{DEFAULTSORT:Climate Change in Australia
Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
Climate of Australia Environmental issues in Australia
Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...