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New dataset ERA5 provides free and detailed information for understanding global climate

The new ERA5 dataset generated by the Copernicus Climate Change Service, which is part of the Earth monitoring programme of the European Union and implemented by ECMWF, is now available for public use. The ERA5 dataset is a reanalysis of hourly meteorological conditions back to 1979. The dataset combines a weather model with observational data from satellites and ground sensors to build a consistent long-term record of our climate. Reanalysis data allow to get the best possible understanding of the past climate, what happened during a particular climatic event and why, and relate current to past climate events.

ERA5 offers a higher resolution in both space and time and assimilates more observational datasets than previous reanalyses, which makes it significantly more accurate. It contains estimates of atmospheric variables such as air temperature, pressure and wind at different altitudes, as well as surface variables such as rainfall, soil moisture content and ocean wave height. ERA5 is replacing ECMWF’s previous atmospheric reanalysis, ERA-Interim, and will be extended even further in the course of this year with meteorological data going back to 1950. 

Dick Dee, Deputy Head of C3S said: “ERA5 will be an invaluable tool for scientists, businesses and service providers alike. Its major areas of application include climate studies and climate change monitoring and assessment. ERA5 will provide even more accurate, environmental data that will help us understand how the climate is changing and what we can do about it.”

About Copernicus 

Copernicus is the European Union’s flagship Earth observation programme. It delivers freely accessible operational data and information services which provide users with reliable and up-to-date information related to environmental issues.

The Copernicus Climate Change Service (C3S) is implemented by the European Centre for Medium-Range Weather Forecasts (ECMWF) on behalf of the European Union. ECMWF also implements the Copernicus Atmosphere Monitoring Service (CAMS). ECMWF is an independent intergovernmental organisation, producing and disseminating numerical weather predictions to its 34 Member and Co-operating States.

Read original release here.

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