Base Time: Thu 23 Sep 2021 00 UTC T+264 Valid time: Mon 27 Sep 2021 00 UTC - Mon 04 Oct 2021 00 UTC
Weekly mean anomalies have been calculated relative to a 20-year model climatology. The areas where the ensemble forecast is not significantly different from the climatology, according to a WMW-test, are blanked.
Note that shaded areas are at 10%, contours are at 1% significant level.
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.
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.
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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.
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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.