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русский
ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2017, Vol. 14, No. 7, pp. 31-38

Radiometric cross-calibration of shortwave channels of Multi-Channel Scanning Unit-Geostationary of Elektro-L No. 2 satellite using Suomi NPP VIIRS measurements

A.A. Filei 1 , A.N. Rublev 2 , A.A. Zaitsev 3 
1 Far-Eastern Center of State Research Center for Space Hydrometeorology “Planeta”, Khabarovsk, Russia
2 State Research Center “Planeta”, Moscow, Russia
3 JSC ”Russian Space Systems”, Moscow, Russia
Accepted: 01.12.2017
DOI: 10.21046/2070-7401-2017-14-7-31-38
In the work, we present the results of radiometric cross-calibration of shortwave channels of Multi-Channel Scanning Unit - Geostationary (MSU-GS) sensor on-board Electro-L No. 2 satellite by using Suomi NPP VIIRS measurements. VIIRS measurements have been chosen as a reference because they are continually updated and are similar to the MSU-GS in spectroscopic characteristics. Radiometric cross-calibration compares a top of atmosphere reflectance (TOA reflectance) of both satellite instruments at the upper boundary of the atmosphere. For this purpose test polygon areas of deep convective clouds (DCC) were selected. The infrared channel of VIIRS at a wavelength of 11 microns with the 205 K threshold was used for DCC identification. The MSU-GS and VIIRS data received from April to August 2017 were used in the calibration. The difference in time between the sessions of Electro-L No. 2 and Suomi NPP satellites did not exceed 15 minutes. The differences of spectral characteristics of the shortwave channels of the two satellite instruments were taken into account using the radiative simulation.
Keywords: MSU-GS, VIIRS, DCC, Electro-L, radiometric calibration, TOA reflectance
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