ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2021, Vol. 18, No. 5, pp. 47-64

On the possibility of retrieving snow water equivalent from satellite microwave radiometry data

V.V. Tikhonov 1, 2 , Yu.V. Sokolova 3, 1 , D.A. Boyarskii 1 , N.Yu. Komarova 1 
1 Space Research Institute RAS, Moscow, Russia
2 Institute for Water and Environmental Problems SB RAS, Barnaul, Russia
3 Arctic and Antarctic Research Institute, Saint Petersburg, Russia
Accepted: 07.09.2021
DOI: 10.21046/2070-7401-2021-18-5-47-64
The work is devoted to the study of the seasonal and interannual dynamics of the brightness temperature of four test sites in the north of the European part of Russia (Murmansk and Arkhangelsk regions, the Komi Republic). The studies were performed for frequencies 1.4, 19.35, 22.24, 37, 91.655 GHz. The data from the SSMIS (Special Sensor Microwave Imager/Sounder) and MIRAS (Microwave Imaging Radiometer using Aperture Synthesis) were used as satellite information. The dependencies of brightness temperature of different bands on climatic characteristics (temperature, amount of precipitation, snow cover thickness), as well as different types of landscape were analyzed. Data from Landsat-8 and PROBA-V satellites were used to assess the landscape structure of test sites (relative areas of different surface types: forest, swamps, water bodies, etc.). It was shown that the use of algorithms for reconstructing snow cover thickness and snow water equivalent from the data of satellite microwave radiometer operating in the 19–92 GHz range (SSM/I, SSMIS) should lead to significant errors for forest areas with coniferous vegetation. The use of the SMOS MIRAS (1.4 GHz) data for this purpose is also inefficient.
Keywords: satellite microwave radiometry, snow cover, snow water equivalent
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