Dataset Edition

General information
Dataset nameMSG - SEVIRI - Land Surface Temperature - West Africa - 0.05
Data typeLAND SURFACE
Created on2016-11-29
Useful in the framework ofOPERATIONAL-DATA > Satellite products
Dataset Contact(s)
Data access Original dataset as provided by the Principal Investigator
History

ISSUE2016-11-29

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 http://landsaf.meteo.pt 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
SatelliteMSG
InstrumentSEVIRI
Instrument typeImaging Spectrometers/Radiometers
Parameters
Parameter nameLand Surface Temperature
Parameter keywordLand Surface > Surface Thermal Properties > Land Surface Temperature
Unit
Coverage
Temporal Coverage
Date begin2005-07-13Date 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 resolution0000-00-00 00:15:00
Latitude resolution0.05
Longitude resolution0.05
Data use information
Use constraintsSee AMMA data poolicy.
Data policyAMMA data policy
Data format(s)NetCDF