An Updated View of the Water Masses on the Northeast Greenland Shelf and Their Link to the Laptev Sea and Lena River
The Northeast Greenland shelf is a broad Arctic shelf located between Greenland and Fram Strait. It is the principal gateway for sea ice export and sea ice-associated freshwater from the Arctic Ocean. Sea ice thickness has decreased by 15% per decade since the early 1990s and meteoric freshwater dis...
Published in: | Journal of Geophysical Research: Oceans |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2023
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Online Access: | https://zenodo.org/record/7851968 https://doi.org/10.1029/2022JC019052 |
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ftzenodo:oai:zenodo.org:7851968 2023-06-11T04:08:51+02:00 An Updated View of the Water Masses on the Northeast Greenland Shelf and Their Link to the Laptev Sea and Lena River Willcox, Esti W. Bendtsen, Jørgen Mortensen, John Mohn, C. Lemes. M. Pedersen, T.J. Holding, J. Møller, Eva Friis Sejr, Michael K. Seidenkrantz, Marit-Solveig Rysgaard, Søren 2023-04-01 https://zenodo.org/record/7851968 https://doi.org/10.1029/2022JC019052 eng eng info:eu-repo/grantAgreement/EC/H2020/869383/ https://zenodo.org/record/7851968 https://doi.org/10.1029/2022JC019052 oai:zenodo.org:7851968 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Journal of Geophysical Research, Oceans 128(4) e2022JC019052 hydrography northeast Greenland east greenland current fresh water source info:eu-repo/semantics/article publication-article 2023 ftzenodo https://doi.org/10.1029/2022JC019052 2023-05-30T22:57:52Z The Northeast Greenland shelf is a broad Arctic shelf located between Greenland and Fram Strait. It is the principal gateway for sea ice export and sea ice-associated freshwater from the Arctic Ocean. Sea ice thickness has decreased by 15% per decade since the early 1990s and meteoric freshwater discharge has increased. The consequence of changing sea-ice and freshwater conditions in the region on ocean dynamics and the biological system remains unknown. Determining the source(s) of freshwater is important to be able to understand how the area will react to future upstream change. Here we present a synoptic survey of the Northeast Greenland shelf and slope with observations of hydrography, the nutrients nitrate, phosphate and silicate, and conservative tracers δ18O, δ2H, and total alkalinity during late summer 2017. We compare these to previously published values, including those which identify Pacific and Atlantic water, the Siberian shelf seas, and the six largest Arctic rivers. We show that a major source of freshwater on the Northeast Greenland shelf during late summer 2017 is the Laptev Sea and find no conclusive evidence of Pacific Water. Our observations indicate a direct link between Northeast Greenland hydrology and processes occurring on Eurasian shelves. Article in Journal/Newspaper Arctic Arctic Ocean East Greenland east greenland current Fram Strait Greenland laptev Laptev Sea lena river Sea ice Zenodo Arctic Arctic Ocean Laptev Sea Greenland Pacific Journal of Geophysical Research: Oceans 128 4 |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
English |
topic |
hydrography northeast Greenland east greenland current fresh water source |
spellingShingle |
hydrography northeast Greenland east greenland current fresh water source Willcox, Esti W. Bendtsen, Jørgen Mortensen, John Mohn, C. Lemes. M. Pedersen, T.J. Holding, J. Møller, Eva Friis Sejr, Michael K. Seidenkrantz, Marit-Solveig Rysgaard, Søren An Updated View of the Water Masses on the Northeast Greenland Shelf and Their Link to the Laptev Sea and Lena River |
topic_facet |
hydrography northeast Greenland east greenland current fresh water source |
description |
The Northeast Greenland shelf is a broad Arctic shelf located between Greenland and Fram Strait. It is the principal gateway for sea ice export and sea ice-associated freshwater from the Arctic Ocean. Sea ice thickness has decreased by 15% per decade since the early 1990s and meteoric freshwater discharge has increased. The consequence of changing sea-ice and freshwater conditions in the region on ocean dynamics and the biological system remains unknown. Determining the source(s) of freshwater is important to be able to understand how the area will react to future upstream change. Here we present a synoptic survey of the Northeast Greenland shelf and slope with observations of hydrography, the nutrients nitrate, phosphate and silicate, and conservative tracers δ18O, δ2H, and total alkalinity during late summer 2017. We compare these to previously published values, including those which identify Pacific and Atlantic water, the Siberian shelf seas, and the six largest Arctic rivers. We show that a major source of freshwater on the Northeast Greenland shelf during late summer 2017 is the Laptev Sea and find no conclusive evidence of Pacific Water. Our observations indicate a direct link between Northeast Greenland hydrology and processes occurring on Eurasian shelves. |
format |
Article in Journal/Newspaper |
author |
Willcox, Esti W. Bendtsen, Jørgen Mortensen, John Mohn, C. Lemes. M. Pedersen, T.J. Holding, J. Møller, Eva Friis Sejr, Michael K. Seidenkrantz, Marit-Solveig Rysgaard, Søren |
author_facet |
Willcox, Esti W. Bendtsen, Jørgen Mortensen, John Mohn, C. Lemes. M. Pedersen, T.J. Holding, J. Møller, Eva Friis Sejr, Michael K. Seidenkrantz, Marit-Solveig Rysgaard, Søren |
author_sort |
Willcox, Esti W. |
title |
An Updated View of the Water Masses on the Northeast Greenland Shelf and Their Link to the Laptev Sea and Lena River |
title_short |
An Updated View of the Water Masses on the Northeast Greenland Shelf and Their Link to the Laptev Sea and Lena River |
title_full |
An Updated View of the Water Masses on the Northeast Greenland Shelf and Their Link to the Laptev Sea and Lena River |
title_fullStr |
An Updated View of the Water Masses on the Northeast Greenland Shelf and Their Link to the Laptev Sea and Lena River |
title_full_unstemmed |
An Updated View of the Water Masses on the Northeast Greenland Shelf and Their Link to the Laptev Sea and Lena River |
title_sort |
updated view of the water masses on the northeast greenland shelf and their link to the laptev sea and lena river |
publishDate |
2023 |
url |
https://zenodo.org/record/7851968 https://doi.org/10.1029/2022JC019052 |
geographic |
Arctic Arctic Ocean Laptev Sea Greenland Pacific |
geographic_facet |
Arctic Arctic Ocean Laptev Sea Greenland Pacific |
genre |
Arctic Arctic Ocean East Greenland east greenland current Fram Strait Greenland laptev Laptev Sea lena river Sea ice |
genre_facet |
Arctic Arctic Ocean East Greenland east greenland current Fram Strait Greenland laptev Laptev Sea lena river Sea ice |
op_source |
Journal of Geophysical Research, Oceans 128(4) e2022JC019052 |
op_relation |
info:eu-repo/grantAgreement/EC/H2020/869383/ https://zenodo.org/record/7851968 https://doi.org/10.1029/2022JC019052 oai:zenodo.org:7851968 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.1029/2022JC019052 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
128 |
container_issue |
4 |
_version_ |
1768382434881044480 |