Global Downwelling Surface Shortwave Flux (DSSF), version 1, from Stationary Sensors, 2009 - present

The Down-welling Surface Shortwave Flux (DSSF) product is retrieved from a constellation of geostationary satellites: Meteosat Second Generation (MSG2); Geostationary Operational Environmental Satellite (GOES-13); and Multi-Function Transport Satellite (MTSAT2). DSSF is defined as the radiative energy reaching the Earth’s surface in the wavelength interval [0.3μm, 4.0μm] per time and surface unit. It essentially depends on the solar zenith angle, on cloud coverage, and to a lesser extent on atmospheric absorption and surface albedo. The DSSF product is disseminated in a regular latitude/longitude grid in tiles of 10x10 degrees. The globe is divided in 36 tiles in longitude and 18 in latitude covering land areas observed with view angle lower than 70 degrees. In order to facilitate the users, the global products are also disseminated in specific continental geographical areas. The DSSF product has a 1-hourly temporal resolution at a spatial resolution of 5 km from 2009 to present. The data are released no more than 2 days after data collection. A Product User Manual and a Validation Report are available.