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Atmospheric and Oceanic Optics

2022 year, number 10

Solar radiation measurements at the Fonovaya observatory. Part II. Measurement results of 2021

B.D. Belan, G.A. Ivlev, A.V. Kozlov, D.A. Pestunov, T.K. Sklyadneva, A.V. Fofonov
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: atmosphere, radiation, albedo, radiation balance

Abstract

Variations in solar radiation in the wavelength ranges λ = 0.285 ÷ 2.8 mm, λ = 0.280 ÷ 0.400 mm, and λ = 0.280 ÷ 0.315 mm are analyzed on the basis of ground-based measurements at the Fonovaya observatory in 2021. The results of calculations of the radiation balance and albedo of the underlying surface are presented. During the period of a stable snow cover, from November to March, the daily average radiation balance is shown to be -1.20 ± 1.18 MJ/m2, and in the absence of snow, from May to September, +8.83 ± 4.49 MJ/m2. The daily solar radiation absorption by the Earth's surface is estimated. During the period of a stable snow cover, from December to March, the daily solar radiation absorbed by the Earth's surface did not exceed 2 MJ/m2, and it varied from to 25 MJ/m2 in summer.