MERRA-2 meteorological re-analysis
The Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) Web service, available worldwide, delivers time series of Temperature (at 2 m), Relative Humidity (at 2 m), Pressure (at 2 m), Wind speed and direction (at 10 m), Rainfall, Snowfall, Snow depth and Global Horizontal Irradiation (GHI).
Time steps range from 1 min up to 1 month (original data are hourly). Spatial resolution of approx. 50 km. The data are available since Jan. 1980 and are regularly updated with approx. one month of delay.
The version 2 of MERRA was introduced in 2016 to replace the original MERRA dataset because of the advances made in the assimilation system.
Main publication is Gelaro et al. 2017.
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