Light absorption by non-algal particles and colored dissolved organic matter at the wavelength of 490 nm in the Black Sea in the autumn (2015 and 2016)

N. Moiseeva; T. Churilova; T. Efimova; O. Krivenko

doi:10.1117/12.2504650

13 December 2018 Light absorption by non-algal particles and colored dissolved organic matter at the wavelength of 490 nm in the Black Sea in the autumn (2015 and 2016)

N. Moiseeva, T. Churilova, T. Efimova, O. Krivenko

Author Affiliations +

Proceedings Volume 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 108336B (2018) https://doi.org/10.1117/12.2504650
Event: XXIV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2018, Tomsk, Russian Federation

Abstract

Variability in light absorption by colored dissolved organic matter (ܽα_CDOM(λ)),by non-algal particles (α_NAP(λ)), and by colored detrital matter (α_CDM(λ)) were analyzed in the coastal and deep water regions in the Black sea at the same season (Autumn) to avoid the impact of seasonal variability. The CDOM, NAP and CDM light absorption were parameterized. As result of the parameterization the two parameters were obtained (coefficient et 490 nm and slope coefficient (S):α_CDOM(490) and ܵS_CDOM;α_NAP(490) and S_NAP ; α_CDM(490) and ܵS_CDM. The CDOM contributed mainly in the ܽα_CDM(490) in both coastal (79 ± 13%) and deep water (88 ± 6%) regions. It was observed high (in ~order) variability in the α_NAP(490) in coastal waters due to resuspension of sediments from the bottom at shallow stations. The average αS_NAP values were 0.010 nm^-1 in coastal and 0.012 nm^-1 in deep water regions. For all dataset the relationship between of ܽα_CDM(490) and ܵS_CDM was described by power function. This equation can be used for refining of the regional algorithm of ܽα_CDM(λ) assessment in the Black Sea based on satellite data. The obtained in this research relative absorption of NAP and CDOM could be used for remote assessment of α_NAP (λ) and ܽα_CDOM(λ) in the Black Sea.

Citation Download Citation

N. Moiseeva, T. Churilova, T. Efimova, and O. Krivenko "Light absorption by non-algal particles and colored dissolved organic matter at the wavelength of 490 nm in the Black Sea in the autumn (2015 and 2016)", Proc. SPIE 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 108336B (13 December 2018); https://doi.org/10.1117/12.2504650

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