In pursuit of anomalies—Analyzing the poleward transport of Atlantic Water with surface drifters
We examine the trajectories of 168 drifters as a proxy for Atlantic water flowing through the Nordic Seas. The drifters were released at or passed through the Svinøy section, off the west coast of Norway. For comparison, we generate a set of synthetic trajectories using a stochastic model, with a ra...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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ftoceanrep:oai:oceanrep.geomar.de:27906 2023-05-15T14:58:47+02:00 In pursuit of anomalies—Analyzing the poleward transport of Atlantic Water with surface drifters Koszalka, Inga Monika LaCasce, J. H. Mauritzen, C. 2013 text https://oceanrep.geomar.de/id/eprint/27906/ https://oceanrep.geomar.de/id/eprint/27906/1/1-s2.0-S096706451200121X-main.pdf https://doi.org/10.1016/j.dsr2.2012.07.035 en eng Elsevier https://oceanrep.geomar.de/id/eprint/27906/1/1-s2.0-S096706451200121X-main.pdf Koszalka, I. M. , LaCasce, J. H. and Mauritzen, C. (2013) In pursuit of anomalies—Analyzing the poleward transport of Atlantic Water with surface drifters. Deep-Sea Research Part II-Topical Studies in Oceanography, 85 . pp. 96-108. DOI 10.1016/j.dsr2.2012.07.035 <https://doi.org/10.1016/j.dsr2.2012.07.035>. doi:10.1016/j.dsr2.2012.07.035 info:eu-repo/semantics/closedAccess Article PeerReviewed 2013 ftoceanrep https://doi.org/10.1016/j.dsr2.2012.07.035 2023-04-07T15:18:08Z We examine the trajectories of 168 drifters as a proxy for Atlantic water flowing through the Nordic Seas. The drifters were released at or passed through the Svinøy section, off the west coast of Norway. For comparison, we generate a set of synthetic trajectories using a stochastic model, with a range of diffusivities. With the both sets, we determine the transit times of both drifters and particles from Svinøy to Arctic gateways: the Barents Sea and Spitsbergen. The mean arrival times to these locations are roughly 200 and 500 days, respectively. This implies ample time for cooling of the surface waters, which increases densities and permits subduction before reaching the Arctic. However a range of transit times is seen; some parcels reach Fram Strait in only 4 months while others are still in the southern Nordic Seas after 2 years. The results do not support the idea that temperature or salinity anomalies can exist as coherent packets. The drifters passing Svinøy, when treated as a group, quickly spread over large distances, mixing with water in the Norwegian and Lofoten Basins. Thus an anomaly entering the Nordic Seas would quickly be obliterated. However, the velocity of the clusters center of mass is consistent with anomaly propagation speeds inferred previously from hydrographic measurements, suggesting the observed variability is advective in nature. Article in Journal/Newspaper Arctic Barents Sea Fram Strait Lofoten Nordic Seas Spitsbergen OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Barents Sea Lofoten Norway Svinøy ENVELOPE(10.992,10.992,64.866,64.866) Deep Sea Research Part II: Topical Studies in Oceanography 85 96 108 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
We examine the trajectories of 168 drifters as a proxy for Atlantic water flowing through the Nordic Seas. The drifters were released at or passed through the Svinøy section, off the west coast of Norway. For comparison, we generate a set of synthetic trajectories using a stochastic model, with a range of diffusivities. With the both sets, we determine the transit times of both drifters and particles from Svinøy to Arctic gateways: the Barents Sea and Spitsbergen. The mean arrival times to these locations are roughly 200 and 500 days, respectively. This implies ample time for cooling of the surface waters, which increases densities and permits subduction before reaching the Arctic. However a range of transit times is seen; some parcels reach Fram Strait in only 4 months while others are still in the southern Nordic Seas after 2 years. The results do not support the idea that temperature or salinity anomalies can exist as coherent packets. The drifters passing Svinøy, when treated as a group, quickly spread over large distances, mixing with water in the Norwegian and Lofoten Basins. Thus an anomaly entering the Nordic Seas would quickly be obliterated. However, the velocity of the clusters center of mass is consistent with anomaly propagation speeds inferred previously from hydrographic measurements, suggesting the observed variability is advective in nature. |
format |
Article in Journal/Newspaper |
author |
Koszalka, Inga Monika LaCasce, J. H. Mauritzen, C. |
spellingShingle |
Koszalka, Inga Monika LaCasce, J. H. Mauritzen, C. In pursuit of anomalies—Analyzing the poleward transport of Atlantic Water with surface drifters |
author_facet |
Koszalka, Inga Monika LaCasce, J. H. Mauritzen, C. |
author_sort |
Koszalka, Inga Monika |
title |
In pursuit of anomalies—Analyzing the poleward transport of Atlantic Water with surface drifters |
title_short |
In pursuit of anomalies—Analyzing the poleward transport of Atlantic Water with surface drifters |
title_full |
In pursuit of anomalies—Analyzing the poleward transport of Atlantic Water with surface drifters |
title_fullStr |
In pursuit of anomalies—Analyzing the poleward transport of Atlantic Water with surface drifters |
title_full_unstemmed |
In pursuit of anomalies—Analyzing the poleward transport of Atlantic Water with surface drifters |
title_sort |
in pursuit of anomalies—analyzing the poleward transport of atlantic water with surface drifters |
publisher |
Elsevier |
publishDate |
2013 |
url |
https://oceanrep.geomar.de/id/eprint/27906/ https://oceanrep.geomar.de/id/eprint/27906/1/1-s2.0-S096706451200121X-main.pdf https://doi.org/10.1016/j.dsr2.2012.07.035 |
long_lat |
ENVELOPE(10.992,10.992,64.866,64.866) |
geographic |
Arctic Barents Sea Lofoten Norway Svinøy |
geographic_facet |
Arctic Barents Sea Lofoten Norway Svinøy |
genre |
Arctic Barents Sea Fram Strait Lofoten Nordic Seas Spitsbergen |
genre_facet |
Arctic Barents Sea Fram Strait Lofoten Nordic Seas Spitsbergen |
op_relation |
https://oceanrep.geomar.de/id/eprint/27906/1/1-s2.0-S096706451200121X-main.pdf Koszalka, I. M. , LaCasce, J. H. and Mauritzen, C. (2013) In pursuit of anomalies—Analyzing the poleward transport of Atlantic Water with surface drifters. Deep-Sea Research Part II-Topical Studies in Oceanography, 85 . pp. 96-108. DOI 10.1016/j.dsr2.2012.07.035 <https://doi.org/10.1016/j.dsr2.2012.07.035>. doi:10.1016/j.dsr2.2012.07.035 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.dsr2.2012.07.035 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
85 |
container_start_page |
96 |
op_container_end_page |
108 |
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1766330904523833344 |