Structure and Seasonal Variability of the Arctic Boundary Current North of Severnaya Zemlya
We assessed the spatial and temporal variability of the Arctic Boundary Current (ABC) using seven oceanographic moorings, deployed across the continental slope north of Severnaya Zemlya in 2015–2018. Transports and individual water masses were quantified based on temperature and salinity recorders a...
Published in: | Journal of Geophysical Research: Oceans |
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American Geophysical Union (AGU)
2023
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Online Access: | https://epic.awi.de/id/eprint/57754/ https://epic.awi.de/id/eprint/57754/1/JGR%20Oceans%20-%202023%20-%20Ruiz%E2%80%90Castillo%20-%20Structure%20and%20Seasonal%20Variability%20of%20the%20Arctic%20Boundary%20Current%20North%20of%20Severnaya.pdf https://hdl.handle.net/10013/epic.e4b855a6-64b8-43be-ab33-947a5c774d00 |
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ftawi:oai:epic.awi.de:57754 2024-06-09T07:42:37+00:00 Structure and Seasonal Variability of the Arctic Boundary Current North of Severnaya Zemlya Ruiz‐Castillo, Eugenio Janout, Markus Hölemann, Jens Kanzow, Torsten Schulz, Kirstin Ivanov, Vladimir 2023-01-21 application/pdf https://epic.awi.de/id/eprint/57754/ https://epic.awi.de/id/eprint/57754/1/JGR%20Oceans%20-%202023%20-%20Ruiz%E2%80%90Castillo%20-%20Structure%20and%20Seasonal%20Variability%20of%20the%20Arctic%20Boundary%20Current%20North%20of%20Severnaya.pdf https://hdl.handle.net/10013/epic.e4b855a6-64b8-43be-ab33-947a5c774d00 unknown American Geophysical Union (AGU) https://epic.awi.de/id/eprint/57754/1/JGR%20Oceans%20-%202023%20-%20Ruiz%E2%80%90Castillo%20-%20Structure%20and%20Seasonal%20Variability%20of%20the%20Arctic%20Boundary%20Current%20North%20of%20Severnaya.pdf Ruiz‐Castillo, E. , Janout, M. orcid:0000-0003-4908-2855 , Hölemann, J. orcid:0000-0001-5102-4086 , Kanzow, T. orcid:0000-0002-5786-3435 , Schulz, K. and Ivanov, V. (2023) Structure and Seasonal Variability of the Arctic Boundary Current North of Severnaya Zemlya , Journal of Geophysical Research - Oceans, 128 (1) . doi:10.1029/2022jc018677 <https://doi.org/10.1029/2022jc018677> , hdl:10013/epic.e4b855a6-64b8-43be-ab33-947a5c774d00 EPIC3Journal of Geophysical Research - Oceans, American Geophysical Union (AGU), 128(1), ISSN: 2169-9275 Article isiRev 2023 ftawi https://doi.org/10.1029/2022jc018677 2024-05-14T23:31:42Z We assessed the spatial and temporal variability of the Arctic Boundary Current (ABC) using seven oceanographic moorings, deployed across the continental slope north of Severnaya Zemlya in 2015–2018. Transports and individual water masses were quantified based on temperature and salinity recorders and current profilers. Our results were compared with observations from the northeast Svalbard and the central Laptev Sea continental slopes to evaluate the hydrographic transformation along the ABC pathway. The highest velocities (>0.30 m s−1) of the ABC occurred at the upper continental slope and decreased offshore to below 0.03 m s−1 in the deep basin. The ABC showed seasonal variability with velocities two times higher in winter than in summer. Compared to upstream conditions in Svalbard, water mass distribution changed significantly within 20 km of the shelf edge due to mixing with- and intrusion of shelf waters. The ABC transported 4.15 ± 0.3 Sv in the depth range 50–1,000 m, where 0.88 ± 0.1, 1.5 ± 0.2, 0.61 ± 0.1 and 1.0 ± 0.15 Sv corresponded to Atlantic Water (AW), Dense Atlantic Water (DAW), Barents Sea Branch Water (BSBW) and Transformed Atlantic Water (TAW). 62–70% of transport was constrained to within 30–40 km of the shelf edge, and beyond 84 km, transport increases were estimated to be 0.54 Sv. Seasonality of TAW derived from local shelf-processes and advection of seasonal-variable Fram Strait waters, while BSBW transport variability was dominated by temperature changes with maximum transport coinciding with minimum temperatures. Further Barents Sea warming will likely reduce TAW and BSBW transport leading to warmer conditions along the ABC pathway. Article in Journal/Newspaper Arctic Arctic Barents Sea Fram Strait laptev Laptev Sea Severnaya Zemlya Svalbard Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Barents Sea Laptev Sea Severnaya Zemlya ENVELOPE(98.000,98.000,79.500,79.500) Svalbard Journal of Geophysical Research: Oceans 128 1 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
We assessed the spatial and temporal variability of the Arctic Boundary Current (ABC) using seven oceanographic moorings, deployed across the continental slope north of Severnaya Zemlya in 2015–2018. Transports and individual water masses were quantified based on temperature and salinity recorders and current profilers. Our results were compared with observations from the northeast Svalbard and the central Laptev Sea continental slopes to evaluate the hydrographic transformation along the ABC pathway. The highest velocities (>0.30 m s−1) of the ABC occurred at the upper continental slope and decreased offshore to below 0.03 m s−1 in the deep basin. The ABC showed seasonal variability with velocities two times higher in winter than in summer. Compared to upstream conditions in Svalbard, water mass distribution changed significantly within 20 km of the shelf edge due to mixing with- and intrusion of shelf waters. The ABC transported 4.15 ± 0.3 Sv in the depth range 50–1,000 m, where 0.88 ± 0.1, 1.5 ± 0.2, 0.61 ± 0.1 and 1.0 ± 0.15 Sv corresponded to Atlantic Water (AW), Dense Atlantic Water (DAW), Barents Sea Branch Water (BSBW) and Transformed Atlantic Water (TAW). 62–70% of transport was constrained to within 30–40 km of the shelf edge, and beyond 84 km, transport increases were estimated to be 0.54 Sv. Seasonality of TAW derived from local shelf-processes and advection of seasonal-variable Fram Strait waters, while BSBW transport variability was dominated by temperature changes with maximum transport coinciding with minimum temperatures. Further Barents Sea warming will likely reduce TAW and BSBW transport leading to warmer conditions along the ABC pathway. |
format |
Article in Journal/Newspaper |
author |
Ruiz‐Castillo, Eugenio Janout, Markus Hölemann, Jens Kanzow, Torsten Schulz, Kirstin Ivanov, Vladimir |
spellingShingle |
Ruiz‐Castillo, Eugenio Janout, Markus Hölemann, Jens Kanzow, Torsten Schulz, Kirstin Ivanov, Vladimir Structure and Seasonal Variability of the Arctic Boundary Current North of Severnaya Zemlya |
author_facet |
Ruiz‐Castillo, Eugenio Janout, Markus Hölemann, Jens Kanzow, Torsten Schulz, Kirstin Ivanov, Vladimir |
author_sort |
Ruiz‐Castillo, Eugenio |
title |
Structure and Seasonal Variability of the Arctic Boundary Current North of Severnaya Zemlya |
title_short |
Structure and Seasonal Variability of the Arctic Boundary Current North of Severnaya Zemlya |
title_full |
Structure and Seasonal Variability of the Arctic Boundary Current North of Severnaya Zemlya |
title_fullStr |
Structure and Seasonal Variability of the Arctic Boundary Current North of Severnaya Zemlya |
title_full_unstemmed |
Structure and Seasonal Variability of the Arctic Boundary Current North of Severnaya Zemlya |
title_sort |
structure and seasonal variability of the arctic boundary current north of severnaya zemlya |
publisher |
American Geophysical Union (AGU) |
publishDate |
2023 |
url |
https://epic.awi.de/id/eprint/57754/ https://epic.awi.de/id/eprint/57754/1/JGR%20Oceans%20-%202023%20-%20Ruiz%E2%80%90Castillo%20-%20Structure%20and%20Seasonal%20Variability%20of%20the%20Arctic%20Boundary%20Current%20North%20of%20Severnaya.pdf https://hdl.handle.net/10013/epic.e4b855a6-64b8-43be-ab33-947a5c774d00 |
long_lat |
ENVELOPE(98.000,98.000,79.500,79.500) |
geographic |
Arctic Barents Sea Laptev Sea Severnaya Zemlya Svalbard |
geographic_facet |
Arctic Barents Sea Laptev Sea Severnaya Zemlya Svalbard |
genre |
Arctic Arctic Barents Sea Fram Strait laptev Laptev Sea Severnaya Zemlya Svalbard |
genre_facet |
Arctic Arctic Barents Sea Fram Strait laptev Laptev Sea Severnaya Zemlya Svalbard |
op_source |
EPIC3Journal of Geophysical Research - Oceans, American Geophysical Union (AGU), 128(1), ISSN: 2169-9275 |
op_relation |
https://epic.awi.de/id/eprint/57754/1/JGR%20Oceans%20-%202023%20-%20Ruiz%E2%80%90Castillo%20-%20Structure%20and%20Seasonal%20Variability%20of%20the%20Arctic%20Boundary%20Current%20North%20of%20Severnaya.pdf Ruiz‐Castillo, E. , Janout, M. orcid:0000-0003-4908-2855 , Hölemann, J. orcid:0000-0001-5102-4086 , Kanzow, T. orcid:0000-0002-5786-3435 , Schulz, K. and Ivanov, V. (2023) Structure and Seasonal Variability of the Arctic Boundary Current North of Severnaya Zemlya , Journal of Geophysical Research - Oceans, 128 (1) . doi:10.1029/2022jc018677 <https://doi.org/10.1029/2022jc018677> , hdl:10013/epic.e4b855a6-64b8-43be-ab33-947a5c774d00 |
op_doi |
https://doi.org/10.1029/2022jc018677 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
128 |
container_issue |
1 |
_version_ |
1801371393406795776 |