Dataset Edition

General information
Dataset nameMSG - SEVIRI - Albedo BroadBand Bi-Hemispherical - West Africa - 0.05
Created on2016-11-28
Useful in the framework ofOPERATIONAL-DATA > Satellite products
Dataset Contact(s)
Data access Original dataset as provided by the Principal Investigator


PurposeThese products are derived from SEVIRI/MSG data processed by the LSA SAF operational node at the Institute of Meteorology of Portugal.

The DSLF (Downwelling Surface Longwave radiation Flux) (W.m-²) is one of the most important components of the surface energy balance over land and can be defined as the thermal irradiance reaching the surface in the thermal infrared spectrum (4-100µm).

The DSSF (Downwelling Surface Shortwave radiation Flux) (W.m-²) refers to the radiative energy in the wavelength interval [0.3µm – 4.0µm] reaching the Earth’s surface per time and surface unit.

The LST (Land Surface Temperature) is the radiative skin temperature of the land surface.

The broadband bi-hemispherical albedo (AL-BB-BH) is the fraction of the incoming solar radiation reflected by the land surface, integrated over the whole viewing and illumination directions, and integrated over the whole solar spectrum. An error (AL-BB-BH-ERR) is associated to albedo.

A QFLAG is associated with each value of parameter.

The Product User Manual documents describing the algorithms for each parameter are available in the website in the section Algorithms. The meaning of QFLAG is also explained in the PUMs.

Projection: The original LSA SAF products are presented in the satellite MSG projection. They have been put in the geographical lat/lon projection (plate-carrée) with a grid step equal to 0.05°. The West_Africa area, which covers the zone from 24.98° West to 24.98° East, and from 4.98° South to 19.98° North, have been extracted from the 0.05° resolution grid. The pixels of the grids are located by the coordinates of their center.

Product Quality: The DSSF, DSLF, LST and AL-BB-BH products over West Africa display a line of no-data pixel for 0° of latitude. This is an impact of a problem concerning the cloud mask in the original LSA SAF algorithm. This is under correction at Institute of Meteorology.
Instrument typeImaging Spectrometers/Radiometers
Parameter nameAlbedo BroadBand Bi-Hemispherical
Parameter keywordLand Surface > Surface Radiative Properties > Albedo
Temporal Coverage
Date begin2005-09-01Date end2012-10-01
Geographic Coverage
Area nameWest_Africa
West bounding coordinate (°)-24.98East bounding coordinate (°)24.98
North bounding coordinate (°)19.98South bounding coordinate (°)-4.98
Data resolution
Temporal resolution0000-00-01 00:00:00
Latitude resolution0.05
Longitude resolution0.05
Data use information
Use constraintsSee AMMA data poolicy.
Data policyAMMA data policy
Data format(s)NetCDF