Advancing global NWP through international collaboration

High resolution mean sea level pressure and ensemble spread

Monday 16 September, 00 UTC T+96 Valid: Friday 20 September, 00 UTC

Ensemble forecasts explained
One 'ensemble forecast' consists of 51 separate forecasts made by the same computer model, all activated from the same starting time. The starting conditions for each member of the ensemble are slightly different, and physical parameter values used also differ slightly. The differences between these ensemble members tend to grow as the forecasts progress, that is as the forecast lead time increases.

View all charts
SCIENCE BLOG

The WMO Integrated Global Observing System (WIGOS), card size

Why we need to protect weather prediction from radio frequency interference

Stephen English explains why, in a world hungry for the use of radio frequencies in new applications, the meteorological community needs to be clear about their critical value for weather prediction.

15 August 2019

NEWS

Andy Brown at the Annual Seminar 2019

Annual Seminar probes progress in predictions up to seasons ahead

Twenty-five experts set out progress and future prospects for sub-seasonal and seasonal predictions at ECMWF’s Annual Seminar 2019 from 2 to 5 September. This flagship event in ECMWF’s calendar was attended by more than 100 participants from 22 countries.

12 September 2019
NEWS
IN FOCUS

Newsletter cover images montage

In focus

Articles presenting ECMWF’s involvement in diverse areas, from our graduate training programme and support for national and international initiatives to information on publications such as our User Guide.

Forecast charts and data

We provide current forecasts, climate reanalyses and specific datasets. These are available via the web, point-to-point dissemination, data servers and broadcasting.

Highlighted tweet 6 Sep 2019

Highlighted tweet

Hurricane #Dorian stalled for more than 24 hours over the Bahamas. In ECMWF's forecasts this development was first reflected three to four days in advance, as shown here in the forecast from 12 UTC on 30 August.

Datasets

Forecasts, analyses, climate re-analyses, reforecasts and multi-model data are available from our archive (MARS) or via dedicated data servers or via point-to-point dissemination.

Accessing forecasts

Researchers, WMO members, commercial users and satellite data providers can gain access to ECMWF forecast products under one of our various license agreement types.

Advancing weather science

Education is a key element of our work at ECMWF, enabling our partners to get the most from ECMWF's services and develop an advanced understanding of forecasting.

ECMWF lecture theatre

ECMWF workshops are open to the worldwide meteorological community, though some training is restricted to member states.

Collaboration banner

Serving meteorology

International collaboration is fundamental to the work of ECMWF, working with the EU and the meteorological community at large, including the World Meteorological Organization, space agencies, and scientists around the world.