A first segment of the ERA5 dataset is now available for public use (1979 to within 5 days of real time). ERA5 provides hourly estimates of a large number of atmospheric, land and oceanic climate variables. The data cover the Earth on a 30km grid and resolve the atmosphere using 137 levels from the surface up to a height of 80km. ERA5 includes information about uncertainties for all variables at reduced spatial and temporal resolutions.

Quality-assured monthly updates of ERA5 are published within 3 months of real time. Preliminary daily updates of the dataset are available to users within 5 days of real time.

The entire ERA5 dataset from 1950 to present is expected to be available for use in 2020.

ERA5 combines vast amounts of historical observations into global estimates using advanced modelling and data assimilation systems.

ERA5 replaces the ERA-Interim reanalysis which stopped being produced on 31 August 2019. You can read about the key characteristics of ERA5 and important changes relative to ERA-Interim.

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