On the origins of water masses exported along both sides of Greenland: A Lagrangian model analysis
International audience The origin of the water masses exported from the Arctic to the North Atlantic along both sides of Greenland is investigated using an original numerical method. A quantitative Lagrangian analysis is applied to the monthly climatological 3‐D output of a global ocean/sea ice high...
Published in: | Journal of Geophysical Research |
---|---|
Main Authors: | , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2010
|
Subjects: | |
Online Access: | https://hal.science/hal-00495257 https://doi.org/10.1029/2009JC005316 |
id |
ftunivbrest:oai:HAL:hal-00495257v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivbrest:oai:HAL:hal-00495257v1 2023-12-17T10:23:42+01:00 On the origins of water masses exported along both sides of Greenland: A Lagrangian model analysis Lique, C. Tréguier, Anne-Marie Blanke, B. Grima, N. Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) 2010 https://hal.science/hal-00495257 https://doi.org/10.1029/2009JC005316 en eng HAL CCSD Wiley-Blackwell info:eu-repo/semantics/altIdentifier/doi/10.1029/2009JC005316 hal-00495257 https://hal.science/hal-00495257 doi:10.1029/2009JC005316 ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://hal.science/hal-00495257 Journal of Geophysical Research. Oceans, 2010, 115, pp.C05019. ⟨10.1029/2009JC005316⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2010 ftunivbrest https://doi.org/10.1029/2009JC005316 2023-11-21T23:37:03Z International audience The origin of the water masses exported from the Arctic to the North Atlantic along both sides of Greenland is investigated using an original numerical method. A quantitative Lagrangian analysis is applied to the monthly climatological 3‐D output of a global ocean/sea ice high‐resolution model. It allows quantification of the different branches of the export to the North Atlantic, as well as related timescales and water mass transformations. In the model, the outflow through Davis Strait consists in equal parts of Pacific and Atlantic water, whilst the export through Fram Strait consists almost fully of Atlantic water (contrary to observations). Pacific water is transferred quickly (O(10 years)) to the North Atlantic through the Beaufort Gyre, where gradual warming and salinification occur. Atlantic water exiting in the surface layer along both sides of Greenland remains about 10 years in the Arctic Basin and undergoes cooling and significant freshening. Below the surface water, Atlantic water exiting through the intermediate and deep layers in Fram Strait follows different pathways in the Arctic, with trajectories being subject to topography constraints. The travel time depends strongly on the pathway (from 1 to 1000 years). The intermediate outflow consists mainly of water entering the Arctic at Fram Strait, while half the deep outflow is composed of water from the Barents Sea. We find that the Barents Sea Branch, which contributes to both the outflows at Fram and Davis straits, is almost fully transformed after a year due to heat exchanges with the very cold atmosphere (in the Barents Sea). Article in Journal/Newspaper Arctic Basin Arctic Barents Sea Davis Strait Fram Strait Greenland North Atlantic Sea ice Université de Bretagne Occidentale: HAL Arctic Barents Sea Greenland Pacific Journal of Geophysical Research 115 C5 |
institution |
Open Polar |
collection |
Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Lique, C. Tréguier, Anne-Marie Blanke, B. Grima, N. On the origins of water masses exported along both sides of Greenland: A Lagrangian model analysis |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The origin of the water masses exported from the Arctic to the North Atlantic along both sides of Greenland is investigated using an original numerical method. A quantitative Lagrangian analysis is applied to the monthly climatological 3‐D output of a global ocean/sea ice high‐resolution model. It allows quantification of the different branches of the export to the North Atlantic, as well as related timescales and water mass transformations. In the model, the outflow through Davis Strait consists in equal parts of Pacific and Atlantic water, whilst the export through Fram Strait consists almost fully of Atlantic water (contrary to observations). Pacific water is transferred quickly (O(10 years)) to the North Atlantic through the Beaufort Gyre, where gradual warming and salinification occur. Atlantic water exiting in the surface layer along both sides of Greenland remains about 10 years in the Arctic Basin and undergoes cooling and significant freshening. Below the surface water, Atlantic water exiting through the intermediate and deep layers in Fram Strait follows different pathways in the Arctic, with trajectories being subject to topography constraints. The travel time depends strongly on the pathway (from 1 to 1000 years). The intermediate outflow consists mainly of water entering the Arctic at Fram Strait, while half the deep outflow is composed of water from the Barents Sea. We find that the Barents Sea Branch, which contributes to both the outflows at Fram and Davis straits, is almost fully transformed after a year due to heat exchanges with the very cold atmosphere (in the Barents Sea). |
author2 |
Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Lique, C. Tréguier, Anne-Marie Blanke, B. Grima, N. |
author_facet |
Lique, C. Tréguier, Anne-Marie Blanke, B. Grima, N. |
author_sort |
Lique, C. |
title |
On the origins of water masses exported along both sides of Greenland: A Lagrangian model analysis |
title_short |
On the origins of water masses exported along both sides of Greenland: A Lagrangian model analysis |
title_full |
On the origins of water masses exported along both sides of Greenland: A Lagrangian model analysis |
title_fullStr |
On the origins of water masses exported along both sides of Greenland: A Lagrangian model analysis |
title_full_unstemmed |
On the origins of water masses exported along both sides of Greenland: A Lagrangian model analysis |
title_sort |
on the origins of water masses exported along both sides of greenland: a lagrangian model analysis |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-00495257 https://doi.org/10.1029/2009JC005316 |
geographic |
Arctic Barents Sea Greenland Pacific |
geographic_facet |
Arctic Barents Sea Greenland Pacific |
genre |
Arctic Basin Arctic Barents Sea Davis Strait Fram Strait Greenland North Atlantic Sea ice |
genre_facet |
Arctic Basin Arctic Barents Sea Davis Strait Fram Strait Greenland North Atlantic Sea ice |
op_source |
ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://hal.science/hal-00495257 Journal of Geophysical Research. Oceans, 2010, 115, pp.C05019. ⟨10.1029/2009JC005316⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2009JC005316 hal-00495257 https://hal.science/hal-00495257 doi:10.1029/2009JC005316 |
op_doi |
https://doi.org/10.1029/2009JC005316 |
container_title |
Journal of Geophysical Research |
container_volume |
115 |
container_issue |
C5 |
_version_ |
1785559728369172480 |