CDOM Optical Properties and DOC Content in the Largest Mixing Zones of the Siberian Shelf Seas
Notable changes in the Arctic ecosystem driven by increased atmospheric temperature and ice cover reduction were observed in the last decades. Ongoing environmental shifts affect freshwater discharge to the Arctic Ocean, and alter Arctic land-ocean fluxes. The monitoring of DOC distribution and CDOM...
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ftmdpi:oai:mdpi.com:/2072-4292/13/6/1145/ 2023-08-20T04:03:49+02:00 CDOM Optical Properties and DOC Content in the Largest Mixing Zones of the Siberian Shelf Seas Anastasia N. Drozdova Andrey A. Nedospasov Nikolay V. Lobus Svetlana V. Patsaeva Sergey A. Shchuka agris 2021-03-17 application/pdf https://doi.org/10.3390/rs13061145 EN eng Multidisciplinary Digital Publishing Institute Environmental Remote Sensing https://dx.doi.org/10.3390/rs13061145 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 13; Issue 6; Pages: 1145 CDOM absorbance spectroscopic indices DOC Arctic shelf seas estuarial and coastal areas Text 2021 ftmdpi https://doi.org/10.3390/rs13061145 2023-08-01T01:18:27Z Notable changes in the Arctic ecosystem driven by increased atmospheric temperature and ice cover reduction were observed in the last decades. Ongoing environmental shifts affect freshwater discharge to the Arctic Ocean, and alter Arctic land-ocean fluxes. The monitoring of DOC distribution and CDOM optical properties is of great interest both from the point of view of validation of remote sensing models, and for studying organic carbon transformation and dynamics. In this study we report the DOC concentrations and CDOM optical characteristics in the mixing zones of the Ob, Yenisei, Khatanga, Lena, Kolyma, and Indigirka rivers. Water sampling was performed in August–October 2015 and 2017. The DOC was determined by high-temperature combustion, and absorption coefficients and spectroscopic indices were calculated using the seawater absorbance obtained with spectrophotometric measurements. Kara and Laptev mixing zones were characterized by conservative DOC behavior, while the East Siberian sea waters showed nonconservative DOC distribution. Dominant DOM sources are discussed. The absorption coefficient aCDOM (350) in the East Siberian Sea was two-fold lower compared to Kara and Laptev seawaters. For the first time we report the DOC content in the Khatanga River of 802.6 µM based on the DOC in the Khatanga estuary. Text Arctic Arctic Ocean East Siberian Sea khatanga laptev MDPI Open Access Publishing Arctic Arctic Ocean Kolyma ENVELOPE(161.000,161.000,69.500,69.500) East Siberian Sea ENVELOPE(166.000,166.000,74.000,74.000) Indigirka ENVELOPE(149.609,149.609,70.929,70.929) Remote Sensing 13 6 1145 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
CDOM absorbance spectroscopic indices DOC Arctic shelf seas estuarial and coastal areas |
spellingShingle |
CDOM absorbance spectroscopic indices DOC Arctic shelf seas estuarial and coastal areas Anastasia N. Drozdova Andrey A. Nedospasov Nikolay V. Lobus Svetlana V. Patsaeva Sergey A. Shchuka CDOM Optical Properties and DOC Content in the Largest Mixing Zones of the Siberian Shelf Seas |
topic_facet |
CDOM absorbance spectroscopic indices DOC Arctic shelf seas estuarial and coastal areas |
description |
Notable changes in the Arctic ecosystem driven by increased atmospheric temperature and ice cover reduction were observed in the last decades. Ongoing environmental shifts affect freshwater discharge to the Arctic Ocean, and alter Arctic land-ocean fluxes. The monitoring of DOC distribution and CDOM optical properties is of great interest both from the point of view of validation of remote sensing models, and for studying organic carbon transformation and dynamics. In this study we report the DOC concentrations and CDOM optical characteristics in the mixing zones of the Ob, Yenisei, Khatanga, Lena, Kolyma, and Indigirka rivers. Water sampling was performed in August–October 2015 and 2017. The DOC was determined by high-temperature combustion, and absorption coefficients and spectroscopic indices were calculated using the seawater absorbance obtained with spectrophotometric measurements. Kara and Laptev mixing zones were characterized by conservative DOC behavior, while the East Siberian sea waters showed nonconservative DOC distribution. Dominant DOM sources are discussed. The absorption coefficient aCDOM (350) in the East Siberian Sea was two-fold lower compared to Kara and Laptev seawaters. For the first time we report the DOC content in the Khatanga River of 802.6 µM based on the DOC in the Khatanga estuary. |
format |
Text |
author |
Anastasia N. Drozdova Andrey A. Nedospasov Nikolay V. Lobus Svetlana V. Patsaeva Sergey A. Shchuka |
author_facet |
Anastasia N. Drozdova Andrey A. Nedospasov Nikolay V. Lobus Svetlana V. Patsaeva Sergey A. Shchuka |
author_sort |
Anastasia N. Drozdova |
title |
CDOM Optical Properties and DOC Content in the Largest Mixing Zones of the Siberian Shelf Seas |
title_short |
CDOM Optical Properties and DOC Content in the Largest Mixing Zones of the Siberian Shelf Seas |
title_full |
CDOM Optical Properties and DOC Content in the Largest Mixing Zones of the Siberian Shelf Seas |
title_fullStr |
CDOM Optical Properties and DOC Content in the Largest Mixing Zones of the Siberian Shelf Seas |
title_full_unstemmed |
CDOM Optical Properties and DOC Content in the Largest Mixing Zones of the Siberian Shelf Seas |
title_sort |
cdom optical properties and doc content in the largest mixing zones of the siberian shelf seas |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/rs13061145 |
op_coverage |
agris |
long_lat |
ENVELOPE(161.000,161.000,69.500,69.500) ENVELOPE(166.000,166.000,74.000,74.000) ENVELOPE(149.609,149.609,70.929,70.929) |
geographic |
Arctic Arctic Ocean Kolyma East Siberian Sea Indigirka |
geographic_facet |
Arctic Arctic Ocean Kolyma East Siberian Sea Indigirka |
genre |
Arctic Arctic Ocean East Siberian Sea khatanga laptev |
genre_facet |
Arctic Arctic Ocean East Siberian Sea khatanga laptev |
op_source |
Remote Sensing; Volume 13; Issue 6; Pages: 1145 |
op_relation |
Environmental Remote Sensing https://dx.doi.org/10.3390/rs13061145 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs13061145 |
container_title |
Remote Sensing |
container_volume |
13 |
container_issue |
6 |
container_start_page |
1145 |
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1774714254104985600 |