Abstract

During the scientific expedition "European Arctic - 2020" on the R/V "Akademik Mstislav Keldysh" (cruise No. 80), the concentration of chlorophyll a, spectral coefficients of light absorption by phytoplankton pigments, non-algal particles and colored dissolved organic matter have been measured in the euphotic layer of the Norwegian and the Barents Seas, and in the Arctic Ocean from July 28 to August 23, 2020. High variability of bio-optical properties, heterogeneity of the studied water area in terms of the relative contribution of colored dissolved organic matter to the total lightu absorption was revealed. Relationship between the total light absorption at 438 and 490 nm in the surface layer and the photosynthesis zone has been obtained.

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