Atlantic water properties, transport and heat loss from mooring observations north of Svalbard
The Atlantic Water inflow to the Arctic Ocean is transformed and modified in the area north of Svalbard, which influences the Arctic Ocean heat and salt budget. Year-round observations are relatively sparse in this region partially covered by sea ice. We took advantage of one-year-long records of oc...
Published in: | Journal of Geophysical Research: Oceans |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2022
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/26777 https://doi.org/10.1029/2022JC018568 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/26777 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/26777 2023-05-15T15:00:39+02:00 Atlantic water properties, transport and heat loss from mooring observations north of Svalbard Koenig, Zoe Charlotte Kalhagen, Kjersti Kolås, Eivind Hugaas Fer, Ilker Nilsen, Frank Cottier, Finlo 2022-08-05 https://hdl.handle.net/10037/26777 https://doi.org/10.1029/2022JC018568 eng eng Wiley Journal of Geophysical Research (JGR): Oceans https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022JC018568 Koenig ZC, Kalhagen K, Kolås E, Fer I, Nilsen F, Cottier F. Atlantic water properties, transport and heat loss from mooring observations north of Svalbard. Journal of Geophysical Research (JGR): Oceans. 2022;127(8) FRIDAID 2046646 https://doi.org/10.1029/2022JC018568 2169-9275 2169-9291 https://hdl.handle.net/10037/26777 openAccess Copyright 2022 The Author(s) VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2022 ftunivtroemsoe https://doi.org/10.1029/2022JC018568 2022-09-14T23:00:12Z The Atlantic Water inflow to the Arctic Ocean is transformed and modified in the area north of Svalbard, which influences the Arctic Ocean heat and salt budget. Year-round observations are relatively sparse in this region partially covered by sea ice. We took advantage of one-year-long records of ocean currents and hydrography from seven moorings north of Svalbard. The moorings are organized in two arrays separated by 94 km along the path of the Atlantic Water inflow to investigate the properties, transport and heat loss of the Atlantic Water in 2018/2019. The Atlantic Water volume transport varies from 0.5 Sv (1 Sv = 10 6 m 3 s −1 ) in spring to 2 Sv in fall. The first mode of variation of the Atlantic Water inflow temperature is a warm/cold mode with a seasonal cycle. The second mode corresponds to a shorter time scale (6–7 days) variability in the onshore/offshore displacement of the temperature core linked to the mesoscale variability. Heat loss from the Atlantic Water in this region is estimated, for the first time using two mooring arrays and conserving the volume transport. The heat loss varies between 302 W m −2 in winter to 60 W m −2 in spring. The onshore moorings show a westward countercurrent driven by Ekman setup in spring, carrying transformed-Atlantic Water. The offshore moorings show a bottom-intensified current that covaries with the wind stress curl. These two mooring arrays allowed for a better comprehension of the structure and transformation of the slope currents north of Svalbard. Article in Journal/Newspaper Arctic Arctic Ocean Sea ice Svalbard University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Svalbard Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) Journal of Geophysical Research: Oceans 127 8 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 |
spellingShingle |
VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 Koenig, Zoe Charlotte Kalhagen, Kjersti Kolås, Eivind Hugaas Fer, Ilker Nilsen, Frank Cottier, Finlo Atlantic water properties, transport and heat loss from mooring observations north of Svalbard |
topic_facet |
VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 |
description |
The Atlantic Water inflow to the Arctic Ocean is transformed and modified in the area north of Svalbard, which influences the Arctic Ocean heat and salt budget. Year-round observations are relatively sparse in this region partially covered by sea ice. We took advantage of one-year-long records of ocean currents and hydrography from seven moorings north of Svalbard. The moorings are organized in two arrays separated by 94 km along the path of the Atlantic Water inflow to investigate the properties, transport and heat loss of the Atlantic Water in 2018/2019. The Atlantic Water volume transport varies from 0.5 Sv (1 Sv = 10 6 m 3 s −1 ) in spring to 2 Sv in fall. The first mode of variation of the Atlantic Water inflow temperature is a warm/cold mode with a seasonal cycle. The second mode corresponds to a shorter time scale (6–7 days) variability in the onshore/offshore displacement of the temperature core linked to the mesoscale variability. Heat loss from the Atlantic Water in this region is estimated, for the first time using two mooring arrays and conserving the volume transport. The heat loss varies between 302 W m −2 in winter to 60 W m −2 in spring. The onshore moorings show a westward countercurrent driven by Ekman setup in spring, carrying transformed-Atlantic Water. The offshore moorings show a bottom-intensified current that covaries with the wind stress curl. These two mooring arrays allowed for a better comprehension of the structure and transformation of the slope currents north of Svalbard. |
format |
Article in Journal/Newspaper |
author |
Koenig, Zoe Charlotte Kalhagen, Kjersti Kolås, Eivind Hugaas Fer, Ilker Nilsen, Frank Cottier, Finlo |
author_facet |
Koenig, Zoe Charlotte Kalhagen, Kjersti Kolås, Eivind Hugaas Fer, Ilker Nilsen, Frank Cottier, Finlo |
author_sort |
Koenig, Zoe Charlotte |
title |
Atlantic water properties, transport and heat loss from mooring observations north of Svalbard |
title_short |
Atlantic water properties, transport and heat loss from mooring observations north of Svalbard |
title_full |
Atlantic water properties, transport and heat loss from mooring observations north of Svalbard |
title_fullStr |
Atlantic water properties, transport and heat loss from mooring observations north of Svalbard |
title_full_unstemmed |
Atlantic water properties, transport and heat loss from mooring observations north of Svalbard |
title_sort |
atlantic water properties, transport and heat loss from mooring observations north of svalbard |
publisher |
Wiley |
publishDate |
2022 |
url |
https://hdl.handle.net/10037/26777 https://doi.org/10.1029/2022JC018568 |
long_lat |
ENVELOPE(-63.071,-63.071,-70.797,-70.797) |
geographic |
Arctic Arctic Ocean Svalbard Curl |
geographic_facet |
Arctic Arctic Ocean Svalbard Curl |
genre |
Arctic Arctic Ocean Sea ice Svalbard |
genre_facet |
Arctic Arctic Ocean Sea ice Svalbard |
op_relation |
Journal of Geophysical Research (JGR): Oceans https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022JC018568 Koenig ZC, Kalhagen K, Kolås E, Fer I, Nilsen F, Cottier F. Atlantic water properties, transport and heat loss from mooring observations north of Svalbard. Journal of Geophysical Research (JGR): Oceans. 2022;127(8) FRIDAID 2046646 https://doi.org/10.1029/2022JC018568 2169-9275 2169-9291 https://hdl.handle.net/10037/26777 |
op_rights |
openAccess Copyright 2022 The Author(s) |
op_doi |
https://doi.org/10.1029/2022JC018568 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
127 |
container_issue |
8 |
_version_ |
1766332726816800768 |