AbstractMeteosat Second Generation (MSG) is the new generation of European geostationary meteorological satellites operated at ELIMETSAT. SEVIRI, the MSG main radiometer, measures the reflected solar radiation within three spectral bands centered at 0.6, 0.8 and 1.6 μm, and within a broad band similar to the VIS channel of MVIRI, the radiometer on-board the first generation of METEOSAT satellites. The operational calibration of these channels relies on modelled radiances over bright desert sites, as no in-flight calibration device is available. These simulated radiances represent therefore the “reference” against which SEVIRI is calibrated. The present study evaluates the uncertainties associated with the characterization of this “reference”, i.e., the modelled radiances. A theoretical estimation is first assessed, based on the impact of the target surface and atmospheric parameter error on the simulated radiance. Top-of-atmosphere simulated radiances are next compared with several thousands of calibrated observations acquired by the ERS2/ATSR-2 and SeaStar/SeaWiFS instruments over the SEVIRI desert calibration sites. Results show that the relative bias between simulation and observation does not exceed ±5%.
Evaluation of radiative transfer simulation accuracy over bright desert calibration sites
Advances in Space Research ; 32 , 11 ; 2201-2210
2003-03-27
10 pages
Article (Journal)
Electronic Resource
English
Evaluation of radiative transfer simulation accuracy over bright desert calibration sites
Online Contents | 2003
|Evaluation of Radiative Transfer Simulation Accuracy Over Bright Desert Calibration Sites
British Library Conference Proceedings | 2003
|Satellite Retrieval of Aerosol Properties over Bright Reflecting Desert Regions
British Library Conference Proceedings | 2007
|Radiometric calibration of AVIRIS-NG sensor using Indian desert sites
Elsevier | 2023
|