Advancing global NWP through international collaboration

High resolution mean sea level pressure and ensemble spread

Wednesday 13 November, 12 UTC T+96 Valid: Sunday 17 November, 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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Modelling convective precipitation – progress and challenges

Exciting improvements in modelling convective precipitation are being achieved through the collaboration of visiting scientist Tobias Becker, from the Max Planck Institute for Meteorology, with ECMWF’s Irina Sandu and Peter Bechtold.

12 November 2019

Aeolus satellite wind profile path

Tests show positive impact of new Aeolus wind data on forecasts

Tests carried out at ECMWF have demonstrated that new wind profile observations from the European Space Agency's ground-breaking Aeolus satellite significantly improve weather forecasts, particularly in the southern hemisphere and the tropics.

12 November 2019

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.

NWP numerical training course classroom

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It’s the final week to register for ECMWF’s 2020 training courses – apply by the deadline of Friday, 15 November at #ECLearn.


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.

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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.