Advancing global NWP through international collaboration

High resolution mean sea level pressure and ensemble spread

Base Time: Mon 02 Aug 2021 12 UTC T+96 Valid time: Fri 06 Aug 2021 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.

View all charts
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

Arctic sea ice

APPLICATE project to have lasting effects on polar forecasting

As part of the EU’s Horizon 2020 project APPLICATE, ECMWF has reviewed the challenges that limit forecast skill in Arctic regions. Advances have been made in coupled modelling, process-based diagnostics, and the effective use of observations and data assimilation.

2 August 2021
NEWS

Image of flooding in Erfstadt-Blessem in July 2021

ECMWF’s role in the Copernicus Emergency Management Service renewed

ECMWF is to continue as the computational centre for the hydrological forecasting activities of the EU-funded Copernicus Emergency Management Service for a further six years. The computational centre helps to deliver the European and Global Flood Awareness Systems, EFAS and GloFAS.

29 July 2021
IN FOCUS

Schematic of the reanalysis process

In focus

Articles presenting ECMWF’s involvement in diverse areas and fact sheets on topics including ocean wave forecasting, Earth system modelling and data assimilation, reanalysis, and ECMWF's use of satellite observations.

 

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

Highlighted tweet

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.