Surface Radiation Data Set - Heliosat (SARAH) - Edition 3

The third edition of the Surface Solar Radiation Data Set - Heliosat (SARAH-3) is a satellite-based climate data record of the solar surface irradiance, the surface direct irradiance (direct horizontal and direct normalized), the sunshine duration, the photosynthetically active radiation, daylight, and the effective cloud albedo derived from satellite-observations of the visible channels of the MVIRI and the SEVIRI instruments onboard the geostationary Meteosat satellites. SARAH-3 covers the time period 1983/01/01 until 2020/12/31 as climate data record (CDR) and is operationally extended as interim climate data record (ICDR) to the present with a latency of 5 days; the data cover the region #x00b1;65° longitude and ±65° latitude. The products are available as monthly and daily means, and as 30-min instantaneous data (sunshine duration is available as monthly and daily sum) on a regular latitude/longitude grid with a spatial resolution of 0.05° x 0.05° degrees. The data record is complemented with a comprehensive documentation of the algorithms used and the generation of the data record. Validation report and user guidance are available as well.