HOME
The Info List - Atmospheric Science


--- Advertisement ---



Atmospheric physics Atmospheric dynamics (category) Atmospheric chemistry
Atmospheric chemistry
(category)

Meteorology

Weather
Weather
(category) · (portal) Tropical cyclone
Tropical cyclone
(category)

Climatology

Climate
Climate
(category) Climate
Climate
change (category) Global warming
Global warming
(category) · (portal)

v t e

Part of the nature series

Weather

Calendar seasons

Winter Spring Summer Autumn

Tropical seasons

Dry season Wet season

Storms

Cloud Cumulonimbus cloud Arcus cloud Downburst Microburst Heat burst Dust storm Simoom Haboob Monsoon Gale Sirocco Firestorm Lightning Supercell Thunderstorm Severe thunderstorm Thundersnow Storm
Storm
surge Tornado Cyclone Mesocyclone Anticyclone Tropical cyclone
Tropical cyclone
(Hurricane) Extratropical cyclone European windstorm Atlantic Hurricane Typhoon Derecho Landspout Dust devil Fire whirl Waterspout Winter
Winter
storm

Ice storm Blizzard Ground blizzard Snowsquall

Precipitation

Drizzle (Freezing drizzle) Graupel Hail Ice pellets
Ice pellets
(Diamond dust) Rain
Rain
(Freezing rain) Cloudburst Snow

Rain
Rain
and snow mixed Snow
Snow
grains Snow
Snow
roller Slush

Topics

Air
Air
pollution Atmosphere

Chemistry Convection Physics River

Climate Cloud

Physics

Fog Cold wave Heat wave Jet stream Meteorology Severe weather

List Extreme

Weather
Weather
forecasting

Weather
Weather
portal

v t e

Atmospheric sciences
Atmospheric sciences
is the study of the Earth's atmosphere, its processes, the effects other systems have on the atmosphere, and the effects of the atmosphere on these other systems. Meteorology
Meteorology
includes atmospheric chemistry and atmospheric physics with a major focus on weather forecasting. Climatology
Climatology
is the study of atmospheric changes (both long and short-term) that define average climates and their change over time, due to both natural and anthropogenic climate variability. Aeronomy
Aeronomy
is the study of the upper layers of the atmosphere, where dissociation and ionization are important. Atmospheric science has been extended to the field of planetary science and the study of the atmospheres of the planets of the solar system. Experimental instruments used in atmospheric sciences include satellites, rocketsondes, radiosondes, weather balloons, and lasers. The term aerology (from Greek ἀήρ, aēr, "air"; and -λογία, -logia) is sometimes used as an alternative term for the study of Earth's atmosphere. Early pioneers in the field include Léon Teisserenc de Bort and Richard Assmann.[1]

Contents

1 Atmospheric chemistry 2 Atmospheric dynamics 3 Atmospheric physics 4 Climatology 5 Atmospheres on other celestial bodies 6 See also 7 References 8 External links

Atmospheric chemistry[edit]

Main article: Atmospheric chemistry Atmospheric chemistry
Atmospheric chemistry
is a branch of atmospheric science in which the chemistry of the Earth's atmosphere
Earth's atmosphere
and that of other planets is studied. It is a multidisciplinary field of research and draws on environmental chemistry, physics, meteorology, computer modeling, oceanography, geology and volcanology and other disciplines. Research is increasingly connected with other areas of study such as climatology. The composition and chemistry of the atmosphere is of importance for several reasons, but primarily because of the interactions between the atmosphere and living organisms. The composition of the Earth's atmosphere has been changed by human activity and some of these changes are harmful to human health, crops and ecosystems. Examples of problems which have been addressed by atmospheric chemistry include acid rain, photochemical smog and global warming. Atmospheric chemistry seeks to understand the causes of these problems, and by obtaining a theoretical understanding of them, allow possible solutions to be tested and the effects of changes in government policy evaluated. Atmospheric dynamics[edit] See also: Synoptic scale meteorology Atmospheric dynamics involves the study of observations and theory dealing with all motion systems of meteorological importance. Common topics studied include diverse phenomena such as thunderstorms, tornadoes, gravity waves, tropical cyclones, extratropical cyclones, jet streams, and global-scale circulations. The goal of dynamical studies is to explain the observed circulations on the basis of fundamental principles from physics. The objectives of such studies incorporate improving weather forecasting, developing methods for predicting seasonal and interannual climate fluctuations, and understanding the implications of human-induced perturbations (e.g., increased carbon dioxide concentrations or depletion of the ozone layer) on the global climate.[2] Atmospheric physics[edit] Main article: Atmospheric physics Atmospheric physics
Atmospheric physics
is the application of physics to the study of the atmosphere. Atmospheric physicists attempt to model Earth's atmosphere and the atmospheres of the other planets using fluid flow equations, chemical models, radiation balancing, and energy transfer processes in the atmosphere and underlying oceans. In order to model weather systems, atmospheric physicists employ elements of scattering theory, wave propagation models, cloud physics, statistical mechanics and spatial statistics, each of which incorporate high levels of mathematics and physics. Atmospheric physics
Atmospheric physics
has close links to meteorology and climatology and also covers the design and construction of instruments for studying the atmosphere and the interpretation of the data they provide, including remote sensing instruments. In the United Kingdom, atmospheric studies are underpinned by the Meteorological Office. Divisions of the U.S. National Oceanic and Atmospheric Administration (NOAA) oversee research projects and weather modeling involving atmospheric physics. The U.S. National Astronomy and Ionosphere
Ionosphere
Center also carries out studies of the high atmosphere. The Earth's magnetic field
Earth's magnetic field
and the solar wind interact with the atmosphere, creating the ionosphere, Van Allen radiation belts, telluric currents, and radiant energy. Climatology[edit]

Regional impacts of warm ENSO episodes (El Niño).

Main article: Climatology In contrast to meteorology, which studies short term weather systems lasting up to a few weeks, climatology studies the frequency and trends of those systems. It studies the periodicity of weather events over years to millennia, as well as changes in long-term average weather patterns, in relation to atmospheric conditions. Climatologists, those who practice climatology, study both the nature of climates – local, regional or global – and the natural or human-induced factors that cause climates to change. Climatology
Climatology
considers the past and can help predict future climate change. Phenomena of climatological interest include the atmospheric boundary layer, circulation patterns, heat transfer (radiative, convective and latent), interactions between the atmosphere and the oceans and land surface (particularly vegetation, land use and topography), and the chemical and physical composition of the atmosphere. Related disciplines include astrophysics, atmospheric physics, chemistry, ecology, physical geography, geology, geophysics, glaciology, hydrology, oceanography, and volcanology. Atmospheres on other celestial bodies[edit]

Earth's atmosphere

All of the Solar System's planets have atmospheres. This is because their gravity is strong enough to keep gaseous particles close to the surface. Larger gas giants are massive enough to keep large amounts of the light gases hydrogen and helium close by, while the smaller planets lose these gases into space.[3] The composition of the Earth's atmosphere is different from the other planets because the various life processes that have transpired on the planet have introduced free molecular oxygen.[4] Much of Mercury's atmosphere has been blasted away by the solar wind.[5] The only moon that has retained a dense atmosphere is Titan. There is a thin atmosphere on Triton, and a trace of an atmosphere on the Moon. Planetary atmospheres are affected by the varying degrees of energy received from either the Sun or their interiors, leading to the formation of dynamic weather systems such as hurricanes, (on Earth), planet-wide dust storms (on Mars), an Earth-sized anticyclone on Jupiter (called the Great Red Spot), and holes in the atmosphere (on Neptune).[6] At least one extrasolar planet, HD 189733 b, has been claimed to possess such a weather system, similar to the Great Red Spot but twice as large.[7] Hot Jupiters have been shown to be losing their atmospheres into space due to stellar radiation, much like the tails of comets.[8][9] These planets may have vast differences in temperature between their day and night sides which produce supersonic winds,[10] although the day and night sides of HD 189733b appear to have very similar temperatures, indicating that planet's atmosphere effectively redistributes the star's energy around the planet.[7] See also[edit]

Weather
Weather
and climate

References[edit]

^ Ultraviolet radiation in the solar system By Manuel Vázquez, Arnold Hanslmeier ^ University of Washington. Atmospheric Dynamics. Retrieved on 1 June 2007. ^ Sheppard, S. S.; Jewitt, D.; Kleyna, J. (2005). "An Ultradeep Survey for Irregular Satellites of Uranus: Limits to Completeness". The Astronomical Journal. 129: 518. arXiv:astro-ph/0410059 . Bibcode:2005AJ....129..518S. doi:10.1086/426329.  ^ Zeilik, Michael A.; Gregory, Stephan A. (1998). Introductory Astronomy & Astrophysics
Astrophysics
(4th ed.). Saunders College Publishing. p. 67. ISBN 0-03-006228-4.  ^ Hunten D. M., Shemansky D. E., Morgan T. H. (1988), The Mercury atmosphere, In: Mercury (A89-43751 19–91). University of Arizona Press, pp. 562–612 ^ Harvey, Samantha (1 May 2006). "Weather, Weather, Everywhere?". NASA. Archived from the original on 8 August 2007. Retrieved 9 September 2007.  ^ a b Knutson, Heather A.; Charbonneau, David; Allen, Lori E.; Fortney, Jonathan J. (2007). "A map of the day-night contrast of the extrasolar planet HD 189733b". Nature. 447 (7141): 183–6. arXiv:0705.0993 . Bibcode:2007Natur.447..183K. doi:10.1038/nature05782. PMID 17495920.  (Related press release) ^ Weaver, D.; Villard, R. (31 January 2007). "Hubble Probes Layer-cake Structure of Alien World's Atmosphere". University of Arizona, Lunar and Planetary Laboratory (Press Release). Archived from the original on 8 August 2007. Retrieved 15 August 2007.  ^ Ballester, Gilda E.; Sing, David K.; Herbert, Floyd (2007). "The signature of hot hydrogen in the atmosphere of the extrasolar planet HD 209458b". Nature. 445 (7127): 511–4. Bibcode:2007Natur.445..511B. doi:10.1038/nature05525. PMID 17268463.  ^ Harrington, Jason; Hansen, Brad M.; Luszcz, Statia H.; Seager, Sara (2006). "The phase-dependent infrared brightness of the extrasolar planet Andromeda b". Science. 314 (5799): 623–6. arXiv:astro-ph/0610491 . Bibcode:2006Sci...314..623H. doi:10.1126/science.1133904. PMID 17038587.  (Related press release)

External links[edit]

Atmospheric fluid dynamics applied to weather maps – Principles such as Advection, Deformation and Vorticity National Center for Atmospheric Research (NCAR) Archives, documents the history of the atmospheric sciences

v t e

Earth science

Atmospheric science Environmental science Geodesy Geology Geophysics Glaciology Hydrology Meteorology Oceanography Physical geography Soil science Volcanology

Category Portal Commons

v t e

Environmental science

Main fields

Atmospheric sciences Biogeochemistry Ecology Environmental chemistry Geosciences Hydrology Limnology Oceanography Soil science

Related fields

Biology Chemistry

green

Ecological economics Environmental design Environmental economics Environmental engineering Environmental health

epidemiology

Environmental studies Environmental toxicology Geodesy Physics Sustainability
Sustainability
science Systems ecology Urban ecology

Applications

Energy conservation Environmental technology Natural resource management Pollution control Recycling Remediation Renewable energy Road ecology Sewage treatment Urban metabolism Water purification Waste management

See also

Human impact on the environment Sustainability

Environment portal Category

scientists

Glossary Degrees Journals Research institutes

v t e

Atmospheric electricity

General

Geophysics Atmospheric sciences Atmospheric physics Atmospheric dynamics Atmospheric dynamo Atmospheric chemistry Earth's magnetic field

Electromagnetism

ELF/VLF emissions

Radio atmospherics Whistlers Chorus Hiss

Optical emissions

Upper-atmospheric lightning Sprites St. Elmo's fire Ball lightning

Sources

Solar radiation Lightning Equatorial electrojet

Applications

Electrodynamic tethers Magnetotellurics

People

Georg Wilhelm Richmann Egon Schwe

.