The role of river runoff in the Kara Sea surface layer acidification and carbonate system changes
Abstract This study aims to perform the results of the investigation of the Kara Sea carbonate system (CS) changes and the factors that determine it. The important feature of the Kara Sea water structure is strong stratification caused mainly by the Ob’ and Yenisey rivers discharge which is estimate...
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crioppubl:10.1088/1748-9326/ab421e 2024-10-13T14:05:39+00:00 The role of river runoff in the Kara Sea surface layer acidification and carbonate system changes Polukhin, Alexander The Ministry of Education and Science of Russia Russian Foundation for Basic Research 2019 http://dx.doi.org/10.1088/1748-9326/ab421e https://iopscience.iop.org/article/10.1088/1748-9326/ab421e https://iopscience.iop.org/article/10.1088/1748-9326/ab421e/pdf unknown IOP Publishing http://creativecommons.org/licenses/by/3.0/ https://iopscience.iop.org/info/page/text-and-data-mining Environmental Research Letters volume 14, issue 10, page 105007 ISSN 1748-9326 journal-article 2019 crioppubl https://doi.org/10.1088/1748-9326/ab421e 2024-09-17T04:18:18Z Abstract This study aims to perform the results of the investigation of the Kara Sea carbonate system (CS) changes and the factors that determine it. The important feature of the Kara Sea water structure is strong stratification caused mainly by the Ob’ and Yenisey rivers discharge which is estimated as 81% of the total continental runoff to sea. Occurring climate changes, as an increase in the total volume of the Arctic Ocean water (due to melting of glaciers, sea ice decline and river runoff increase), air temperature and CO 2 concentration growth should affect greatly the Kara Sea CS. However, riverine water influence seems to be the main driver of future acidification of the Kara Sea water due to permafrost thawing as it stores a great amount of buried carbon. An increase of carbon (mainly inorganic) flow to the sea will lead to carbonate equilibrium shift, oxidation of organic matter and release of CO 2 that ultimately leads to a decrease in pH and therefore acidification. The area of the riverine plume depends on the amount of freshwater flowing into the sea and the conditions of the wind forcing. According to the data from Shirshov Institute cruises within the plume area aragonite saturation is below 1 that shows its state as acidified. Prevalence of pCO 2 values in the freshened surface layer over the atmospheric shows that atmospheric carbon dioxide, apparently, cannot serve as the main driver for the acidification of the surface waters of the Kara Sea. At the shallow shelf to the north of the Ob′ Inlet mouth we observe acidification of the whole water column from surface to the bottom layer due to elevated riverine discharge and increase of flowing terrestrial carbon. Article in Journal/Newspaper Arctic Arctic Ocean Ice Kara Sea permafrost Sea ice IOP Publishing Arctic Arctic Ocean Kara Sea Yenisey ENVELOPE(82.680,82.680,71.828,71.828) Environmental Research Letters 14 10 105007 |
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Abstract This study aims to perform the results of the investigation of the Kara Sea carbonate system (CS) changes and the factors that determine it. The important feature of the Kara Sea water structure is strong stratification caused mainly by the Ob’ and Yenisey rivers discharge which is estimated as 81% of the total continental runoff to sea. Occurring climate changes, as an increase in the total volume of the Arctic Ocean water (due to melting of glaciers, sea ice decline and river runoff increase), air temperature and CO 2 concentration growth should affect greatly the Kara Sea CS. However, riverine water influence seems to be the main driver of future acidification of the Kara Sea water due to permafrost thawing as it stores a great amount of buried carbon. An increase of carbon (mainly inorganic) flow to the sea will lead to carbonate equilibrium shift, oxidation of organic matter and release of CO 2 that ultimately leads to a decrease in pH and therefore acidification. The area of the riverine plume depends on the amount of freshwater flowing into the sea and the conditions of the wind forcing. According to the data from Shirshov Institute cruises within the plume area aragonite saturation is below 1 that shows its state as acidified. Prevalence of pCO 2 values in the freshened surface layer over the atmospheric shows that atmospheric carbon dioxide, apparently, cannot serve as the main driver for the acidification of the surface waters of the Kara Sea. At the shallow shelf to the north of the Ob′ Inlet mouth we observe acidification of the whole water column from surface to the bottom layer due to elevated riverine discharge and increase of flowing terrestrial carbon. |
author2 |
The Ministry of Education and Science of Russia Russian Foundation for Basic Research |
format |
Article in Journal/Newspaper |
author |
Polukhin, Alexander |
spellingShingle |
Polukhin, Alexander The role of river runoff in the Kara Sea surface layer acidification and carbonate system changes |
author_facet |
Polukhin, Alexander |
author_sort |
Polukhin, Alexander |
title |
The role of river runoff in the Kara Sea surface layer acidification and carbonate system changes |
title_short |
The role of river runoff in the Kara Sea surface layer acidification and carbonate system changes |
title_full |
The role of river runoff in the Kara Sea surface layer acidification and carbonate system changes |
title_fullStr |
The role of river runoff in the Kara Sea surface layer acidification and carbonate system changes |
title_full_unstemmed |
The role of river runoff in the Kara Sea surface layer acidification and carbonate system changes |
title_sort |
role of river runoff in the kara sea surface layer acidification and carbonate system changes |
publisher |
IOP Publishing |
publishDate |
2019 |
url |
http://dx.doi.org/10.1088/1748-9326/ab421e https://iopscience.iop.org/article/10.1088/1748-9326/ab421e https://iopscience.iop.org/article/10.1088/1748-9326/ab421e/pdf |
long_lat |
ENVELOPE(82.680,82.680,71.828,71.828) |
geographic |
Arctic Arctic Ocean Kara Sea Yenisey |
geographic_facet |
Arctic Arctic Ocean Kara Sea Yenisey |
genre |
Arctic Arctic Ocean Ice Kara Sea permafrost Sea ice |
genre_facet |
Arctic Arctic Ocean Ice Kara Sea permafrost Sea ice |
op_source |
Environmental Research Letters volume 14, issue 10, page 105007 ISSN 1748-9326 |
op_rights |
http://creativecommons.org/licenses/by/3.0/ https://iopscience.iop.org/info/page/text-and-data-mining |
op_doi |
https://doi.org/10.1088/1748-9326/ab421e |
container_title |
Environmental Research Letters |
container_volume |
14 |
container_issue |
10 |
container_start_page |
105007 |
_version_ |
1812811720164376576 |