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Significant wave height and mean direction

Base Time: Sat 28 May 2022 12 UTC T+24 Valid time: Sun 29 May 2022 12 UTC (T+24)

At any location over the oceans, a wave field is fully characterised by its 2-dimensional wave spectrum which describes how much wave energy is present for given frequencies and propagation directions. This comprehensive representation is simplified in a set of integrated parameters:
The significant wave height is defined as 4 times the square root of the integral over frequency and direction of the wave spectrum.
The mean wave direction is the spectrally averaged propagation direction of the waves.

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Radio Frequency Interference: an NWP perspective on the RFI 2022 workshop

Radio frequency interference poses serious risks to numerical weather prediction and other fields. Stephen English takes us through the key issues discussed at the RFI 2022 workshop on monitoring, mitigation, and management.

14 March 2022


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European State of the Climate 2021 shows a year of contrasts

Europe experienced its warmest summer on record, and one of the most intense fire seasons in 30 years, according to the European State of the Climate 2021, published by the Copernicus Climate Change Service, implemented by ECMWF and funded by the European Union.

22 April 2022

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Spring 2022 Newsletter published

The spring 2022 issue of the ECMWF Newsletter is now available. As well as news about ECMWF staff and events, it features articles about new developments and the use that can be made of ECMWF products.

13 April 2022

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25 January 2022

Even more #OpenData now available!
Data released today are based on a range of our high-resolution and ensemble forecasts, and can be accessed through our https service and via the @Microsoft @Azure cloud.

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