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The MET OFFICE (officially the METEOROLOGICAL OFFICE until 2000) is the United Kingdom's national weather service. It is an executive agency and trading fund of the Department for Business, Energy and Industrial Strategy led by CEO, Rob Varley and chief scientist, Professor Stephen Belcher. The Met Office
Met Office
makes meteorological predictions across all timescales from weather forecasts to climate change .

CONTENTS

* 1 History

* 1.1 Connection with the Ministry of Defence * 1.2 Change in ownership

* 2 Locations

* 3 Forecasts

* 3.1 Shipping forecast * 3.2 Weather forecasting and warnings * 3.3 Weather prediction models * 3.4 Flood Forecasting Centre * 3.5 Seasonal forecasts * 3.6 Supply of forecasts for broadcasting companies * 3.7 World Area Forecast Centre * 3.8 Volcanic Ash Advisory Centre
Volcanic Ash Advisory Centre
* 3.9 Air quality * 3.10 IPCC * 3.11 High performance computing * 3.12 Customer service

* 4 Weather stations

* 5 Meteorological Research Unit and the Facility for Airborne Atmospheric Measurements (FAAM)

* 5.1 FAAM

* 6 Directors General and Chief Executives * 7 See also * 8 References * 9 Further reading * 10 External links

HISTORY

Vice-Admiral Robert FitzRoy
Robert FitzRoy
founder of the Met Office
Met Office

The Met Office
Met Office
was established in 1854 as a small department within the Board of Trade
Board of Trade
under Vice-Admiral Robert FitzRoy
Robert FitzRoy
as a service to mariners . The loss of the passenger vessel, the Royal Charter , and 459 lives off the coast of Anglesey
Anglesey
in a violent storm in October 1859 led to the first gale warning service. FitzRoy established a network of 15 coastal stations from which visual gale warnings could be provided for ships at sea.

The new electric telegraph enabled rapid dissemination of warnings and also led to the development of an observational network which could then be used to provide synoptic analysis. The Met Office started in 1861 to provide weather forecasts to newspapers. FitzRoy requested the daily traces of the photo-barograph at Kew Observatory (invented by Francis Ronalds
Francis Ronalds
) to assist in this task and similar barographs and as well as instruments to continuously record other meteorological parameters were later provided to stations across the observing network. Publication of forecasts ceased in May 1866 after FitzRoy’s death but recommenced in April 1879.

CONNECTION WITH THE MINISTRY OF DEFENCE

Former Met Office
Met Office
building in Bracknell, Berkshire before relocation to Exeter, since demolished

Following the First World War
First World War
, the Met Office
Met Office
became part of the Air Ministry in 1919, the weather observed from the top of Adastral House (where the Air Ministry
Air Ministry
was based) giving rise to the phrase "The weather on the Air Ministry
Air Ministry
roof". As a result of the need for weather information for aviation, the Met Office
Met Office
located many of its observation and data collection points on RAF airfields , and this accounts for the large number of military airfields mentioned in weather reports even today. In 1936 the Met Office
Met Office
split with services to the Royal Navy
Royal Navy
being provided by its own forecasting services.

It became an executive agency of the Ministry of Defence in April 1990, a quasi-governmental role, being required to act commercially.

CHANGE IN OWNERSHIP

Following a machinery of government change, the Met Office
Met Office
became part of the Department for Business, Innovation and Skills
Department for Business, Innovation and Skills
on 18 July 2011, and subsequently part of the Department for Business, Energy and Industrial Strategy following the merger of BIS and the Department of Energy and Climate Change on 14 July 2016.

Although no longer part of the MOD, the Met Office
Met Office
maintains strong links with the military through its front line offices at RAF and Army bases both in the UK and overseas and its involvement in the Joint Operations Meteorology and Oceanography Centre (JOMOC) with the Royal Navy. The Mobile Met Unit (MMU) are a unit consisting of Met Office staff who are also RAF reservists who accompany forward units in times of conflict advising the armed forces of the conditions for battle, particularly the RAF.

LOCATIONS

The 2003 headquarters building on the edge of Exeter
Exeter

In September 2003 the Met Office
Met Office
moved its headquarters to a purpose-built £80m structure near Exeter
Exeter
Airport and the A30 , in Devon
Devon
, being officially opened on 21 June 2004 – a few weeks short of its 150th anniversary – by Robert May, Baron May of Oxford
Robert May, Baron May of Oxford
, from its previous location of Bracknell
Bracknell
in Berkshire. It has a worldwide presence – including a forecasting centre in Aberdeen
Aberdeen
, and offices in Gibraltar
Gibraltar
and on the Falklands
Falklands
. Other outposts lodge in establishments such as the Joint Centre for Mesoscale Meteorology (JCMM) at University of Reading
University of Reading
in Berkshire, the Joint Centre for Hydro-Meteorological Research (JCHMR) site at Wallingford in Oxfordshire, and there is a Met Office
Met Office
presence at Army and Air Force bases within the UK and abroad (including frontline units in conflict zones). Royal Navy
Royal Navy
weather forecasts are generally provided by naval officers, not Met Office
Met Office
personnel.

FORECASTS

SHIPPING FORECAST

Main article: Shipping Forecast

The Shipping Forecast is produced by the Met Office
Met Office
and broadcast on BBC Radio 4
BBC Radio 4
, for those traversing the seas around the British Isles
British Isles
.

WEATHER FORECASTING AND WARNINGS

The Met Office
Met Office
issues Severe Weather Warnings for the United Kingdom through the National Severe Weather Warning Service (NSWWS). These warn of weather events that may affect transport infrastructure and endanger people's lives. In March 2008, the system was improved and a new stage of warning was introduced, the 'Advisory'.

In September 2015 the Met Office
Met Office
established a "name our storms" project, the aim is to provide a single authoritative naming system for the storms that affect the UK and Ireland by asking the public to suggest names. On 10 November, the first named storm was Abigail .

WEATHER PREDICTION MODELS

The main role of the Met Office
Met Office
is to produce forecast models by gathering information from weather satellites in space and observations on earth, then processing it with a variety of models, based on a software package known as the unified model . The principal weather products for UK customers are 36-hour forecasts from the operational 1.5 km resolution UKV model covering the UK and surroundings (replacing the 4 km model), 48-hour forecasts from the 12 km resolution NAE model covering Europe and the North Atlantic, and 144-hour forecasts from the 25 km resolution global model (replacing the 40 km global model). The Met Office's Global Model forecast has consistently been in the top 3 for global weather forecast performance (in the decades up to 2010) in independent verification to WMO standards. Products for other regions of the globe are sold to customers abroad, provided for MOD operations abroad or provided free to developing countries in Africa. If necessary, forecasters may make adjustments to the computer forecasts. Data is stored in the Met Office's own PP-format .

FLOOD FORECASTING CENTRE

Main article: Flood Forecasting Centre

Formed in 2009, the Flood Forecasting Centre (FFC) is a joint venture between the Environment Agency and the Met Office
Met Office
to provide flood risk guidance for England and Wales. The Centre is jointly staffed from both parent organisations and is based in the Operations Centre at the Met Office
Met Office
headquarters in Exeter. In Scotland this role is performed by the Scottish Flood Forecasting Service, a joint venture between the Scottish Environment Protection Agency (SEPA) and the Met Office.

SEASONAL FORECASTS

The Met Office
Met Office
makes seasonal and long range forecasts and distributes them to customers and users globally. The Met Office
Met Office
was the first climate and weather forecast provider to be recognised as a Global Producing Centre of long range forecasts by the World Meteorological Organisation and continues to provide forecasts to the WMO for dissemination to other national meteorological services worldwide.

Met Office
Met Office
research has broken new ground in seasonal forecasting for the extratropics and has demonstrated its abilities in its seasonal predictions of the North Atlantic Oscillation and winter climate for Europe and North America.

SUPPLY OF FORECASTS FOR BROADCASTING COMPANIES

In particular, two of the main media companies, the BBC
BBC
and ITV produce forecasts using the Met Office's data. At the BBC
BBC
Weather Centre, they are continuously updated on the information arriving by computer, or by fax and e-mail. The BBC\'s new graphics are used on all of their television weather broadcasts, but ITV Weather
ITV Weather
use animated weather symbols. The forecasters at the BBC
BBC
Weather Centre are employed by the Met Office, not the BBC. On 23 August 2015 it was announced that the BBC
BBC
would be replacing the Met Office
Met Office
with a competing provider MeteoGroup
MeteoGroup
, as part of the corporation's legal obligation to provide best value for money for the licence fee payers.

WORLD AREA FORECAST CENTRE

Main article: World Area Forecast Centre

The Met Office
Met Office
is one of only two World Area Forecast Centres or WAFCs, and is referred to as WAFC London. The other WAFC is located in Kansas City, Missouri
Kansas City, Missouri
, and known as WAFC Washington. WAFC data is used daily to safely and economically route aircraft, particularly on long-haul journeys. The data provides details of wind speed and direction, air temperature, cloud type and tops, and other features.

VOLCANIC ASH ADVISORY CENTRE

Main article: Volcanic Ash Advisory Center
Volcanic Ash Advisory Center

As part of its aviation forecast operation the Met Office
Met Office
operates the London Volcanic Ash Advisory Centre
Volcanic Ash Advisory Centre
(VAAC). This provides forecasts to the aviation industry of volcanic ash clouds that could enter aircraft flight paths and impact aviation safety. The London VAAC, one of nine worldwide, is responsible for the area covering the British Isles
British Isles
, the north east Atlantic and Iceland
Iceland
. The VAAC were set up by the International Civil Aviation Organisation (ICAO), an agency of the United Nations, as part of the International Airways Volcano Watch (IAVW). The London VAAC makes use of satellite images, plus seismic, radar and visual observation data from Iceland
Iceland
, the location of all of the active volcanoes in its area of responsibility. The NAME dispersion model developed by the Met Office
Met Office
is used to forecast the movement of the ash clouds 6, 12 and 18 hours from the time of the alert at different flight levels.

AIR QUALITY

Main article: UK Dispersion Modelling Bureau

The Met Office
Met Office
issues air quality forecasts made using NAME , the Met Office's medium-to-long-range atmospheric dispersion model . It was developed as a nuclear accident model following the Chernobyl accident in 1986, but has since evolved into an all-purpose dispersion model capable of predicting the transport, transformation and deposition of a wide class of airborne materials. NAME is used operationally by the Met Office
Met Office
as an emergency response model as well as for routine air quality forecasting. Aerosol dispersion is calculated using the UKCA model.

The forecast is produced for pollutants and their typical health effects are shown in the following table.

POLLUTANT HEALTH EFFECTS AT HIGH LEVEL

Nitrogen dioxide Ozone Sulphur dioxide These gases irritate the airways of the lungs, increasing the symptoms of those suffering from lung diseases.

Particulates Fine particles can be carried deep into the lungs where they can cause inflammation and a worsening of heart and lung diseases

IPCC

Main article: Intergovernmental Panel on Climate Change
Intergovernmental Panel on Climate Change

Until 2001 the Met Office
Met Office
hosted the Intergovernmental Panel on Climate Change working group, chaired by John Houghton , on climate science. In 2001 the working group moved to the National Oceanic and Atmospheric Administration .

HIGH PERFORMANCE COMPUTING

Due to the large amount of computation needed for Numerical Weather Prediction and the Unified model , the Met Office
Met Office
has had some of the most powerful supercomputers in the world. In November 1997 the Met Office supercomputer was ranked third in the world.

YEAR COMPUTER CALCULATIONS PER SECOND HORIZONTAL RESOLUTION (GLOBAL/LOCAL) NUMBER OF VERTICAL LEVELS

1959 Ferranti Mercury 3Kflops (N.A./320 km) 2 levels

1965 English Electric KDF9 50Kflops (N.A./300 km) 3 levels

1972 IBM System/360
IBM System/360
195 4Mflops (300 km/100 km) 10 levels

1982 CDC Cyber 205 200Mflops (150 km/75 km) 15 levels

1991 Cray Y-MP C90 /16 10Gflops (90 km/17 km) 19 levels

1997 Cray T3E 900/1200 430Gflops (60 km/12 km) 38 levels

2004 NEC SX-6 2.0Tflops (40 km/12 km) 50 levels

2006 NEC SX-8 and SX-6 5.4Tflops (40 km/4 km) 50 levels

2009 IBM Power6
Power6
140Tflops (17 km/1.5 km) 70 levels

2015 Cray XC40
Cray XC40
16 petaflops 1.5 km

CUSTOMER SERVICE

Since 2012 the Met Office
Met Office
Contact Centre (known as the Weather Desk) has been part of the 'Top 50 Companies for Customer Service' programme.

In 2015 the Met Office
Met Office
won awards in the following categories: • Rated 1st Overall for Combined Channels • Most Improved Overall for Social Media • Rated 2nd Overall for Call Service • Rated 1st Overall for Email Service • Best in Public Sector • Best Extra Small Centre

WEATHER STATIONS

Reports (observations) from weather stations can be automatic (totally machine produced), semi-automatic (part-machine and part manual), or manual. Some stations produce manual observations during business hours and revert to automatic observations outside these times. Many stations feature "present weather" sensors, CCTV , etc. There is also a network of 'upper air' stations, using Radiosondes .

Some stations have limited reporting times, while other report continuously, mainly RAF and Army Air Corps stations where a manned met office is provided for military operations. The "standard" is a once-hourly reporting schedule, but automatic stations can often be "polled" as required, while stations at airfields report twice-hourly, with additional (often frequent in times of bad weather) special reports as necessary to inform airfield authorities of changes to the weather that may affect aviation operations.

Some stations report only CLIMAT data (e.g. maximum and minimum temperatures, rainfall totals over a period, etc.) and these are usually recorded at 0900 and 2100 hours daily. Weather reports are often performed by observers not specifically employed by the Met Office, such as Air traffic control
Air traffic control
staff, coastguards, university staff and so on.

* Eskdalemuir Observatory * Lerwick Observatory * Penkridge weather station * Prestatyn weather station * Stonyhurst * Sutton Bonington * Wye weather station * RAF Benson
RAF Benson
* RAF Brize Norton weather station * RAF Coningsby * RAF Cottesmore * RAF Cranwell weather station * RAF Kinloss
RAF Kinloss
weather station * RAF Leeming
RAF Leeming
weather station * RAF Leuchars weather station * RAF Linton-on-Ouse weather station * RAF Little Rissington
RAF Little Rissington
weather station (supported by RAF Brize Norton ) * RAF Lossiemouth weather station * RAF Lyneham
RAF Lyneham
weather station * RAF Marham weather station * RAF Northolt weather station 51.55 N 0.417 W * RAF Odiham weather station * RAF Shawbury
RAF Shawbury
* RAF Waddington
RAF Waddington
weather station * AAC Wattisham weather station * RAF Valley * AAC Middle Wallop weather station

METEOROLOGICAL RESEARCH UNIT AND THE FACILITY FOR AIRBORNE ATMOSPHERIC MEASUREMENTS (FAAM)

Main article: RAF Cardington
RAF Cardington

Meteorological Research was carried out at RAE Bedford with instruments being carried by barrage balloons until the RAE facility closed in the 1980s.

The Met Office
Met Office
association with Cardington continues by maintaining a Meteorological Research Unit (MRU), this is responsible for conducting research into part of the atmosphere called the boundary layer by using a tethered balloon which is kept in a small portable hangar.

FAAM

Main article: Facility for Airborne Atmospheric Measurements FAAM BAe146-300 takes off at RIAT , RAF Fairford
RAF Fairford
, England

The Facility for Airborne Atmospheric Measurements (FAAM), part of the National Centre for Atmospheric Science , is based at Cranfield Airport . It is a collaboration with the Natural Environment Research Council .

The FAAM was established as part of the National Centre for Atmospheric Science (NCAS), itself part of NERC, to provide aircraft measurement for use by UK atmospheric research organisations on worldwide campaigns. The main equipment is a modified BAe 146
BAe 146
type 301 aircraft, registration G-LUXE, owned and operated by BAE Systems
BAE Systems
on behalf of Directflight Limited.

Areas of application include:

* Radiative transfer studies in clear and cloudy air; * Tropospheric chemistry measurements; * Cloud physics
Cloud physics
and dynamic studies; * Dynamics of mesoscale weather systems; * Boundary layer and turbulence studies; * Remote sensing
Remote sensing
: verification of ground based instruments; * Satellite ground truth: radiometric measurements and winds; * Satellite instrument test-bed; * Campaigns in the UK and abroad.

DIRECTORS GENERAL AND CHIEF EXECUTIVES

* Sir William Napier Shaw 1905–1920 * Sir Graham Sutton 1954–1965 * Sir Basil John Mason 1965–1983 * Sir John Houghton 1983–1991 * Julian Hunt 1992–1997 * Peter Ewins 1997–2004 * David Rogers 2004–2005 * Mark Hutchinson 2005–2007 * John Hirst 2007-2014 * Rob Varley 2014-

SEE ALSO

* Climatic Research Unit hacking incident * Climate of the United Kingdom * Climate change
Climate change
in the United Kingdom * Burns\' Day storm * Eskdalemuir Observatory * European Centre for Medium-Range Weather Forecasts * Great Storm of 1987 * Met Éireann , the Irish meteorological service, which separated from the UK Met Office
Met Office
in 1936. * North West Shelf Operational Oceanographic System
North West Shelf Operational Oceanographic System
* Winter storm naming in the United Kingdom and Ireland

REFERENCES

* ^ "Meteorological Office Archive". Retrieved 5 December 2013. * ^ Ronalds, B.F. (2016). Sir Francis Ronalds: Father of the Electric Telegraph. London: Imperial College Press. ISBN 978-1-78326-917-4 . * ^ Ronalds, B.F. (June 2016). "Sir Francis Ronalds
Francis Ronalds
and the Early Years of the Kew Observatory". Weather. 71: 131–134. Bibcode :2016Wthr...71..131R. doi :10.1002/wea.2739 . * ^ "UK Met Office
Met Office
switches departments in Whitehall shake-up". Clickgreen.org.uk. Retrieved 18 July 2011. * ^ "Machinery of Government Changes:Written statement - HCWS94". Hansard. Hansard. 18 July 2016. Retrieved 22 July 2016. * ^ " Met Office
Met Office
defence: Supporting operations". Webarchive.nationalarchives.gov.uk. 13 May 2014. Archived from the original on 5 July 2007. Retrieved 30 June 2014. * ^ " Met Office
Met Office
warning colours". Metoffice.gov.uk. 19 November 2008. Retrieved 15 May 2010. * ^ "10 November 2015 - The Met Office
Met Office
has named Abigail as the first storm as part of the Name Our Storms project.". Met Office. * ^ "Experiences with a 1.5 km version of the Met Office
Met Office
Unified Model for short range forecasting". ametsoc.org. 25 January 2011. Retrieved 23 February 2011. * ^ " Met Office
Met Office
Atmospheric numerical model configurations". Metoffice.gov.uk. 5 May 2010. Retrieved 15 May 2010. * ^ "Verification statistics and evaluations of ECMWF forecasts in 2009–2010 – Figures 11–15". European Centre for Medium-range Weather Forecasts ecmwf.int. October 2010. Retrieved 10 February 2011.

* ^ " Flood Forecasting Centre moves to Exeter". Exeter
Exeter
Science. Retrieved 4 June 2011. * ^ "Scottish Flood Forecasting Service". Sepa.org.uk. Retrieved 4 June 2011. * ^ "Long-range global and regional forecasts". Met Office. Retrieved 21 July 2017. * ^ "Climate research at the Met Office
Met Office
Hadley Centre" (PDF). Met Office. 2007. * ^ "Seasonal Predictions of the North Atlantic Oscillation". Geophysical Research Letters. 41: 2514–2519. Bibcode :2014GeoRL..41.2514S. doi :10.1002/2014GL059637 . * ^ Knapton, Sarah (17 October 2016). "The Met Office
Met Office
can now predict winter weather one year in advance". The Telegraph. * ^ "Producing Weather Broadcasts". BBC
BBC
Weather. Retrieved 15 May 2010. * ^ "How the weather is forecast". The Met Office. 11 January 1954. Archived from the original on 8 January 2007. Retrieved 15 May 2010. * ^ " Met Office
Met Office
loses BBC
BBC
weather forecasting contract".