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Global Producing Centres for Long Range Forecasts

 

GPCs

In 2006, WMO has begun a process to designate centres making global seasonal forecasts as WMO Global Producing Centres (GPCs) for Long Range Forecasts, as an integral part of its Global Data-Processing and Forecasting System (GDPFS).  Through this designation process, GPCs adhere to certain well-defined standards – aiding consistency and usability of output:

  • a fixed forecast production cycle
  • a standard set of forecast products
  • WMO-defined verification standards (for retrospective forecasts)

A comprehensive set of standard verification measures, with which to communicate the skill of forecasts, has also been defined (the WMO Standard Verification System for Long-Range Forecasts – SVSLRF). 

The following are GPC products provided as minimum requirement:

  • Predictions for averages, accumulations, or frequencies over 1-month periods or longer; typically, anomalies in 3-month-averaged quantities is the standard format for seasonal forecasts. Forecasts are usually expressed probabilistically
  • Lead time: between 0 and 4 months
  • Issue frequency: monthly or at least quarterly
  • Delivery: graphical images on GPC website and/or digital data for download
  • Variables: 2m temperature, precipitation, sea-surface temperature (SST), MSLP, 500hPa height, 850hPa temperature
  • Long-term forecast skill assessments, using measures defined by the SVSLRF

    The following are the officially designated WMO Global Producing Centres (GPCs) of Long Range Forecasts:
Bureau of Meteorology (BoM), Australia
http://www.bom.gov.au/climate/ahead/
China Meteorological Administration (CMA)/Bejing Climate Center (BCC)
http://bcc.cma.gov.cn/en/
Climate Prediction Center (CPC), NOAA, United States of America
http://www.cpc.ncep.noaa.gov/
European Centre for Medium-Range Weather Forecasts (ECMWF)
Forecast - http://www.ecmwf.int/products/forecasts/seasonal/
Japan Meteorological Agency (JMA)/Tokyo Climate Centre (TCC)
http://ds.data.jma.go.jp/gmd/tcc/tcc/index.html
Korea Meteorological Administration (KMA)
http://www.kma.go.kr/
Meteo-France
http://www.meteo.fr
Met Office (United Kingdom)
http://www.metoffice.gov.uk/research/seasonal/
Meteorological Service of Canada (MSC)
http://www.weatheroffice.gc.ca/saisons/GPC_Montreal_e.html
South African Weather Services (SAWS)
http://www.weathersa.co.za/
Hydrometeorological Centre of Russia
http://wmc.meteoinfo.ru/season
Center for Weather Forecasts and Climate Studies/National Institute for Space Research (CPTEC/INPE), Brazil
http://clima1.cptec.inpe.br/gpc/

In addition, WMO has also designated the following Lead Centres:

WMO Lead Center for Long Range Forecast Multi-Model Ensemble (LC-LRFMME)
Jointly coordinated by KMA and NOAA/NCEP
http://www.wmolc.org/
WMO Lead Center for Standard Verification System of Long Range Forecasts (LC-SVSLRF)
Jointly coordinated by BoM and MSC
http://www.bom.gov.au/wmo/lrfvs/

Other major centres providing global seasonal forecasts:

International Research Institute for Climate and Society (IRI), USA
http://portal.iri.columbia.edu/
APEC (Asia-Pacific Economic Cooperation) Climate Center (APCC), Republic of Korea
http://www.apcc21.net/eng/service/fore/lmon/japcc030101_lst.jsp

 

 
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