статья в журнале

En

Physical Oceanography

ISSN:1573160

2025

Purpose. The study aims to analyze the results of satellite observations of the Black Sea in summer 2015 during the period of increased chlorophyll a concentration in its deep-water region. Methods and Results. We analyzed NASA archive products from MODIS and VIIRS optical data updated during the 2022 archive reprocessing. To ensure reliable conclusions, we compared synchronous observations from Aqua, Terra and Suomi NPP satellites and analyzed spectral dependencies of sea surface reflectance. Additionally, we compared chlorophyll a concentration estimates in the sea near-surface layer using two different methods: the standard NASA processing method and an alternative approach based on calculating the phytoplankton-related light absorption coefficient. This value is calculated using the GIOP (Generalized ocean color inversion model for retrieving marine Inherent Optical Properties) procedure and is included in the NASA archive among other products. Conclusions. Analysis of satellite observations revealed the need to account for significant errors and distortions. After excluding erroneous data, we found that chlorophyll a concentrations in the eastern deep-water region at the end of summer 2015 reached anomalously high values of ~ 1–2 mg/m3. © 2025, V. S. Suetin, S. N. Korolev.

Black Sea, chlorophyll a concentration, GIOP, light absorption, MODIS, optical characteristics, phytoplankton, satellite observations, VIIRS, yellow substance

2-s2.0-105022466505

Suetin, V.S. and Korolev, S.N., 2025. Features of Results of Optical Observations of the Black Sea from Space in Summer 2015. Physical Oceanography, 32(5), pp. 690-702.

Суетин В. С., Королев С. Н. Особенности результатов оптических наблюдений Черного моря из космоса летом 2015 года // Морской гидрофизический журнал. 2025. Т. 41, № 5. С. 681–693. EDN PNJPVQ.