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It was shown that the spatial distribution of the three light-absorbing components in the explored Arctic region was non-homogenous. It was revealed that CDOM contributed largely to the total non-water light absorption (atot(\u03bb) = aph(\u03bb) + aNAP(\u03bb) + aCDOM(\u03bb)) in the blue spectral range in the Arctic Ocean and the Barents Sea. The fraction of NAP in the total non-water absorption was low (less than 20%). The depth of the euphotic zone depended on atot(\u03bb) in the surface water layer, which was described by a power equation. The Arctic Ocean, the Norwegian Sea and the Barents Sea did not differ in the Chl-a-specific light absorption coefficients of phytoplankton. In the blue maximum of phytoplankton absorption spectra, Chl-a-specific light absorption coefficients of phytoplankton in the upper mixed layer (UML) were higher than those below the UML. Relationships between phytoplankton absorption coefficients and Chl-a were derived by least squares fitting to power functions for the whole visible domain with a 1 nm interval. The OCI, OC3 and GIOP algorithms were validated using a database of co-located results (day-to-day) of in situ measurements (n = 63) and the ocean color scanner data: the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard the Terra (EOS AM) and Aqua (EOS PM) satellites, the Visible and Infrared Imager\/Radiometer Suite (VIIRS) onboard the Suomi National Polar-orbiting Partnership (S-NPP) and JPSS-1 satellites (also known as NOAA-20), and the Ocean and the Land Color Imager (OLCI) onboard the Sentinel-3A and Sentinel-3B satellites. The comparison showed that despite the technological progress in optical scanners and the algorithms refinement, the considered standard products (chlor_a, chl_ocx, aph_443, adg_443) carried little information about inherent optical properties in Arctic waters. Based on the statistic metrics (Bias, MdAD, MAE and RMSE), it was concluded that refinement of the algorithm for retrieval of water bio-optical properties based on remote sensing data was required for the Arctic region.<\/jats:p>","DOI":"10.3390\/rs15174346","type":"journal-article","created":{"date-parts":[[2023,9,4]],"date-time":"2023-09-04T02:43:20Z","timestamp":1693795400000},"page":"4346","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Light Absorption by Optically Active Components in the Arctic Region (August 2020) and the Possibility of Application to Satellite Products for Water Quality Assessment"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3908-4160","authenticated-orcid":false,"given":"Tatiana","family":"Efimova","sequence":"first","affiliation":[{"name":"A. O. Kovalevsky Institute of Biology of the Southern Seas (IBSS), Russian Academy of Sciences, 299011 Sevastopol, Russia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0045-7284","authenticated-orcid":false,"given":"Tatiana","family":"Churilova","sequence":"additional","affiliation":[{"name":"A. O. Kovalevsky Institute of Biology of the Southern Seas (IBSS), Russian Academy of Sciences, 299011 Sevastopol, Russia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3057-3964","authenticated-orcid":false,"given":"Elena","family":"Skorokhod","sequence":"additional","affiliation":[{"name":"A. O. Kovalevsky Institute of Biology of the Southern Seas (IBSS), Russian Academy of Sciences, 299011 Sevastopol, Russia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8627-7603","authenticated-orcid":false,"given":"Vyacheslav","family":"Suslin","sequence":"additional","affiliation":[{"name":"Marine Hydrophysical Institute Russian Academy of Sciences, 299011 Sevastopol, Russia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1853-4671","authenticated-orcid":false,"given":"Anatoly S.","family":"Buchelnikov","sequence":"additional","affiliation":[{"name":"A. O. Kovalevsky Institute of Biology of the Southern Seas (IBSS), Russian Academy of Sciences, 299011 Sevastopol, Russia"},{"name":"Laboratory of Molecular and Cellular Biophysics, Sevastopol State University, 299053 Sevastopol, Russia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5641-4227","authenticated-orcid":false,"given":"Dmitry","family":"Glukhovets","sequence":"additional","affiliation":[{"name":"Shirshov Institute of Oceanology, Russian Academy of Sciences, 117997 Moscow, Russia"},{"name":"Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia"}]},{"given":"Aleksandr","family":"Khrapko","sequence":"additional","affiliation":[{"name":"Shirshov Institute of Oceanology, Russian Academy of Sciences, 117997 Moscow, Russia"}]},{"given":"Natalia","family":"Moiseeva","sequence":"additional","affiliation":[{"name":"A. O. Kovalevsky Institute of Biology of the Southern Seas (IBSS), Russian Academy of Sciences, 299011 Sevastopol, Russia"}]}],"member":"1968","published-online":{"date-parts":[[2023,9,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"547188","DOI":"10.3389\/fmars.2020.547188","article-title":"Global drivers on Southern Ocean ecosystems: Changing physical environments and anthropogenic pressures in an Earth system","volume":"7","author":"Morley","year":"2020","journal-title":"Front. Mar. Sci."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"52","DOI":"10.1016\/j.gloplacha.2014.03.003","article-title":"Intensified Warming of the Arctic: Causes and impacts on middle latitudes","volume":"117","author":"Walsh","year":"2014","journal-title":"Glob. Planet. 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