Data intercalibration technique for infrared channels of the Elektro-L/MSU-GS imager with the AIRS infrared sounder data

Resumo

A new intercalibration technique for infrared channels of the MSU-GS imager on the Elektro-L no. 1 Russian geostationary meteorological satellites is suggested using the Aqua/AIRS sounder data. Intercalibration is carried out over the ocean surface in the region of the Elektro-L subsatellite point. The proposed technique accounts for possible FOV contamination by the land surface or clouds. According to the intercalibration, the average biases for the MSU-GS channels are as following: 4.8 K for channel 7, 2.0 K for channel 8, and 2.7 K for the channels 9 and 10. The technique was validated using the same approach for two infrared channels of the European Meteosat-10/SEVIRI imager.