Estimation of primary production for the southeastern Baltic Sea from chlorophyll a concentration and water column photosynthetic parameters

Elena A. Kudryavtseva; Tatiana V. Bukanova

doi:10.1117/12.2645063

7 December 2022 Estimation of primary production for the southeastern Baltic Sea from chlorophyll a concentration and water column photosynthetic parameters

Elena A. Kudryavtseva, Tatiana V. Bukanova

Author Affiliations +

Proceedings Volume 12341, 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 123414R (2022) https://doi.org/10.1117/12.2645063
Event: 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 2022, Tomsk, Russia

Abstract

An algorithm for the calculation of primary production (PP) for the Russian part of the southeastern Baltic Sea was evaluated. The algorithm is based on the vertical profile of chlorophyll a (Chl a), the parameter for estimation of the underwater irradiance distribution, and the photosynthetic parameter P^B_opt. An empirical equation previously developed for the Baltic Sea was used to reconstruct the vertical profiles of Chl a from its concentration in the surface layer. Parameter P^B_opt was observed from the data of monthly in situ measurements at a buoy station during the year. As a result, the multiple regression equation linked the photosynthetic parameter P^B_opt with two variables – the sea surface temperature and the Chl a concentration. Relationship between Chl a concentration at the surface and Secchi disk was used for estimation of the surface light diffuse attenuation coefficient. The algorithm was verified on the ship-based measurements and on satellite data. PP values calculated by the algorithm in the warm period of the year are not underestimated, what appears to be of a great importance for studying the biogeochemical cycles and carbon flux.

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Elena A. Kudryavtseva and Tatiana V. Bukanova "Estimation of primary production for the southeastern Baltic Sea from chlorophyll a concentration and water column photosynthetic parameters", Proc. SPIE 12341, 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 123414R (7 December 2022); https://doi.org/10.1117/12.2645063

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