Advancing global NWP through international collaboration

High resolution mean sea level pressure and ensemble spread

Wednesday 08 July, 12 UTC T+96 Valid: Sunday 12 July, 12 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

Blog card Wedi

A baseline for global weather and climate simulations at 1 km resolution

Nils Wedi describes the first ever 1 km seasonal timescale simulation of the atmosphere, run on the fastest computer in the world (as of November 2019). Modelling weather in such unprecedented detail is offering exciting opportunities to advance weather and climate prediction, and the testing of new satellite observations.

22 June 2020

NEWS
NEWS

ECMWF Annual Report 2019 Cover image

Annual Report 2019 now available online

The ECMWF Annual Report 2019 is now available online. The report reviews improvements in forecast performance, advances in research, the Centre’s contributions to Europe’s Copernicus Earth observation programme, and preparations for the new data centre in Italy.

22 June 2020
IN FOCUS

Composite image of Earth as seen by Metop-B satellite

Fact sheet: ECMWF’s use of satellite observations

Satellite observations make a crucial contribution to the quality of today’s weather forecasts. This fact sheet explains the types of satellite observations available and how ECMWF uses such data in its operational forecasting system and in research activities.

6 July 2020

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.

2019 Annual Report - Cover Page

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The ECMWF Annual Report 2019 is now available online, reviewing improvements in forecast performance, advances in research, the Centre’s contributions to Europe’s Copernicus Earth observation programme, and preparations for the new data centre in Italy.

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.

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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.