Drivers of Laptev Sea interannual variability in salinity and temperature
Eurasian rivers provide a quarter of total fresh water to the Arctic, maintaining a persistent fresh layer that covers the surface Arctic Ocean. This freshwater export controls Arctic Ocean stratification, circulation, and basin-wide sea ice concentration. The Lena River supplies the largest volume...
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Copernicus Publications
2024
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00072373 2024-04-21T07:55:27+00:00 Drivers of Laptev Sea interannual variability in salinity and temperature Hudson, Phoebe A. Martin, Adrien C. H. Josey, Simon A. Marzocchi, Alice Angeloudis, Athanasios 2024-03 electronic https://doi.org/10.5194/os-20-341-2024 https://noa.gwlb.de/receive/cop_mods_00072373 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070590/os-20-341-2024.pdf https://os.copernicus.org/articles/20/341/2024/os-20-341-2024.pdf eng eng Copernicus Publications Ocean Science -- http://www.bibliothek.uni-regensburg.de/ezeit/?2183769 -- http://www.copernicus.org/EGU/os/os.html -- 1812-0792 https://doi.org/10.5194/os-20-341-2024 https://noa.gwlb.de/receive/cop_mods_00072373 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070590/os-20-341-2024.pdf https://os.copernicus.org/articles/20/341/2024/os-20-341-2024.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2024 ftnonlinearchiv https://doi.org/10.5194/os-20-341-2024 2024-03-26T15:13:22Z Eurasian rivers provide a quarter of total fresh water to the Arctic, maintaining a persistent fresh layer that covers the surface Arctic Ocean. This freshwater export controls Arctic Ocean stratification, circulation, and basin-wide sea ice concentration. The Lena River supplies the largest volume of runoff and plays a key role in this system, as runoff outflows into the Laptev Sea as a particularly shallow plume. Previous in situ and modelling studies suggest that local wind forcing is a driver of variability in Laptev sea surface salinity (SSS) but there is no consensus on the roles of Lena River discharge and sea ice cover in contributing to this variability or on the dominant driver of variability. Until recently, satellite SSS retrievals were insufficiently accurate for use in the Arctic. However, retreating sea ice cover and continuous progress in satellite product development have significantly improved SSS retrievals, giving satellite SSS data true potential in the Arctic. In this region, satellite-based SSS is found to agree well with in situ data (r>0.8) and provides notable improvements compared to the reanalysis product used in this study (r>0.7) in capturing patterns and variability observed in in situ data. This study demonstrates a novel method of identifying the dominant drivers of interannual variability in Laptev Sea dynamics within reanalysis products and testing if these relationships appear to hold in satellite-based SSS, sea surface temperature (SST) data, and in situ observations. The satellite SSS data firmly establish what is suggested by reanalysis products and what has previously been subject to debate due to the limited years and locations analysed with in situ data; the zonal wind is the dominant driver of offshore or onshore Lena River plume transport. The eastward wind confines the plume to the southern Laptev Sea and drives alongshore transport into the East Siberian Sea, and westward wind drives offshore plume transport into the northern Laptev Sea. This finding is ... Article in Journal/Newspaper Arctic Ocean East Siberian Sea laptev Laptev Sea lena river Sea ice Niedersächsisches Online-Archiv NOA Ocean Science 20 2 341 367 |
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English |
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article Verlagsveröffentlichung Hudson, Phoebe A. Martin, Adrien C. H. Josey, Simon A. Marzocchi, Alice Angeloudis, Athanasios Drivers of Laptev Sea interannual variability in salinity and temperature |
topic_facet |
article Verlagsveröffentlichung |
description |
Eurasian rivers provide a quarter of total fresh water to the Arctic, maintaining a persistent fresh layer that covers the surface Arctic Ocean. This freshwater export controls Arctic Ocean stratification, circulation, and basin-wide sea ice concentration. The Lena River supplies the largest volume of runoff and plays a key role in this system, as runoff outflows into the Laptev Sea as a particularly shallow plume. Previous in situ and modelling studies suggest that local wind forcing is a driver of variability in Laptev sea surface salinity (SSS) but there is no consensus on the roles of Lena River discharge and sea ice cover in contributing to this variability or on the dominant driver of variability. Until recently, satellite SSS retrievals were insufficiently accurate for use in the Arctic. However, retreating sea ice cover and continuous progress in satellite product development have significantly improved SSS retrievals, giving satellite SSS data true potential in the Arctic. In this region, satellite-based SSS is found to agree well with in situ data (r>0.8) and provides notable improvements compared to the reanalysis product used in this study (r>0.7) in capturing patterns and variability observed in in situ data. This study demonstrates a novel method of identifying the dominant drivers of interannual variability in Laptev Sea dynamics within reanalysis products and testing if these relationships appear to hold in satellite-based SSS, sea surface temperature (SST) data, and in situ observations. The satellite SSS data firmly establish what is suggested by reanalysis products and what has previously been subject to debate due to the limited years and locations analysed with in situ data; the zonal wind is the dominant driver of offshore or onshore Lena River plume transport. The eastward wind confines the plume to the southern Laptev Sea and drives alongshore transport into the East Siberian Sea, and westward wind drives offshore plume transport into the northern Laptev Sea. This finding is ... |
format |
Article in Journal/Newspaper |
author |
Hudson, Phoebe A. Martin, Adrien C. H. Josey, Simon A. Marzocchi, Alice Angeloudis, Athanasios |
author_facet |
Hudson, Phoebe A. Martin, Adrien C. H. Josey, Simon A. Marzocchi, Alice Angeloudis, Athanasios |
author_sort |
Hudson, Phoebe A. |
title |
Drivers of Laptev Sea interannual variability in salinity and temperature |
title_short |
Drivers of Laptev Sea interannual variability in salinity and temperature |
title_full |
Drivers of Laptev Sea interannual variability in salinity and temperature |
title_fullStr |
Drivers of Laptev Sea interannual variability in salinity and temperature |
title_full_unstemmed |
Drivers of Laptev Sea interannual variability in salinity and temperature |
title_sort |
drivers of laptev sea interannual variability in salinity and temperature |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/os-20-341-2024 https://noa.gwlb.de/receive/cop_mods_00072373 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070590/os-20-341-2024.pdf https://os.copernicus.org/articles/20/341/2024/os-20-341-2024.pdf |
genre |
Arctic Ocean East Siberian Sea laptev Laptev Sea lena river Sea ice |
genre_facet |
Arctic Ocean East Siberian Sea laptev Laptev Sea lena river Sea ice |
op_relation |
Ocean Science -- http://www.bibliothek.uni-regensburg.de/ezeit/?2183769 -- http://www.copernicus.org/EGU/os/os.html -- 1812-0792 https://doi.org/10.5194/os-20-341-2024 https://noa.gwlb.de/receive/cop_mods_00072373 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070590/os-20-341-2024.pdf https://os.copernicus.org/articles/20/341/2024/os-20-341-2024.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/os-20-341-2024 |
container_title |
Ocean Science |
container_volume |
20 |
container_issue |
2 |
container_start_page |
341 |
op_container_end_page |
367 |
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1796937534635245568 |