Global Down-welling Surface Long-wave Flux (DSLF), version 1, from Stationary Sensors, 2009 - present

The Down-welling Surface Longwave Flux (DSLF) 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). DSLF is defined as the total irradiance within infrared part of the spectrum (4-100 um). Within this range atmospheric scattering may be neglected and DSLF corresponds essentially to radiation emitted by the lowest hundred meters of the atmosphere. The DSLF 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 DSLF 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.