Advancing global NWP through international collaboration

High resolution mean sea level pressure and ensemble spread

Base Time: Sat 25 Sep 2021 00 UTC T+96 Valid time: Wed 29 Sep 2021 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.

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SCIENCE BLOG

ECMWF science blog; simulated satellite image

Science blog

Read our blog for a scientist’s perspective on different areas of ECMWF’s work. Recent posts cover the use of satellite data in weather forecasting and our involvement in European projects to develop global storm-resolving Earth system models and to help prepare the weather and climate community for large-scale machine learning applications.

 

NEWS

Annual Seminar 2021 group image

Annual Seminar looks into Earth system observations

Thirty-seven experts set out the latest thinking on Earth system observations at ECMWF’s Annual Seminar 2021 from 13 to 17 September. The online event was held jointly with the World Meteorological Organization WCRP–WWRP Symposium on Data Assimilation and Reanalysis.

22 September 2021
NEWS

Map showing ECMWF sites in the UK, Germany and Italy

ECMWF becomes a multi-site organisation

ECMWF has officially become a multi-site organisation, holding opening ceremonies for offices in Bonn, Germany, and its data centre in Bologna, Italy, on 13 and 14 September 2021.

13 September 2021
IN FOCUS

Atos BullSequana supercomputer

Fact sheet: Supercomputing at ECMWF

Find out why ECMWF needs a supercomputer, what we use it for, and how developments in supercomputing can help to provide more skilful weather forecasts.

10 September 2021

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.

Cycle Upgrade 47r2

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ECMWF has implemented an upgrade of its Integrated Forecasting System, including a move from double to single precision and an increase in the vertical resolution of ensemble forecasts. #IFS47r2 #newfcsystem Find out more here: https://www.ecmwf.int/en/about/media-centre/news/2021/forecast-upgrade-i...

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.

Workshops and education

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.