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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, 2022, Vol. 19, No. 2, pp. 243-251

Ten-year series of global albedo distribution from Meteor-M satellite data

M.B. Bogdanov 1 , M.Yu. Cherviakov 1 , A.A. Koshel 1 
1 Saratov State University, Saratov, Russia
Accepted: 06.04.2022
DOI: 10.21046/2070-7401-2022-19-2-243-251
The composition of the heliogeophysical instrumental complexes of the Meteor-M satellites No. 1 and No. 2 included IKOR-M short-wave reflected solar radiation flux radiometers operating in the wavelength range of 0.3–4.0 μm and having an angular radius of the field of view of 30°. On the basis of these measurements, the albedo at the top of the atmosphere and the fluxes of absorbed solar radiation can be estimated. An analysis of the albedo over snowless deserts, obtained from the data of the IKOR-M radiometers, shows a noticeable effect of aging of the first radiometer manifested in a systematic decrease in its sensitivity and stable operation of the second. A method is proposed for taking into account the aging effect and converting the readings of the first radiometer to the scale of the second, which practically coincides with the accepted international scale. Estimation of the average global albedo of the Earth for the 2014–2019 period of observations is 0.286±0.003 that is in good agreement with the data of the independent space experiment CERES. As a result, a homogeneous ten-year series of the global distribution of monthly mean albedo values from October 2009 to August 2019 was obtained with a resolution of 2.5×2.5°.
Keywords: shortwave radiation, albedo, radiometers, algorithms, measurement scale
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