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Global Producing Centres for Long Range Forecasts



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
China Meteorological Administration (CMA)/Bejing Climate Center (BCC)
Climate Prediction Center (CPC), NOAA, United States of America
European Centre for Medium-Range Weather Forecasts (ECMWF)
Forecast -
Japan Meteorological Agency (JMA)/Tokyo Climate Centre (TCC)
Korea Meteorological Administration (KMA)
Met Office (United Kingdom)
Meteorological Service of Canada (MSC)
South African Weather Services (SAWS)
Hydrometeorological Centre of Russia
Center for Weather Forecasts and Climate Studies/National Institute for Space Research (CPTEC/INPE), Brazil

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
WMO Lead Center for Standard Verification System of Long Range Forecasts (LC-SVSLRF)
Jointly coordinated by BoM and MSC

Other major centres providing global seasonal forecasts:

International Research Institute for Climate and Society (IRI), USA
APEC (Asia-Pacific Economic Cooperation) Climate Center (APCC), Republic of Korea





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