Temporal Variability of the Labrador Current Pathways Around the Tail of the Grand Banks at Intermediate Depths in a High-Resolution Ocean Circulation Model
The Northwest Atlantic Shelf and Slope have warmed dramatically in the past decade, changing marine life and challenging fisheries management. A rapid warming event in 2009/2010, linked to a reduced supply of cold water from the Labrador Sea, pushed this region to a new state of unprecedentedly high...
Published in: | Journal of Geophysical Research: Oceans |
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Online Access: | https://digitalcommons.uri.edu/gsofacpubs/2039 https://doi.org/10.1029/2022JC018756 |
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ftunivrhodeislan:oai:digitalcommons.uri.edu:gsofacpubs-3008 2024-02-04T10:01:55+01:00 Temporal Variability of the Labrador Current Pathways Around the Tail of the Grand Banks at Intermediate Depths in a High-Resolution Ocean Circulation Model Gonçalves Neto, Afonso Palter, Jaime B. Xu, Xiaobiao Fratantoni, Paula 2023-03-01T08:00:00Z https://digitalcommons.uri.edu/gsofacpubs/2039 https://doi.org/10.1029/2022JC018756 unknown DigitalCommons@URI https://digitalcommons.uri.edu/gsofacpubs/2039 doi:10.1029/2022JC018756 https://doi.org/10.1029/2022JC018756 Graduate School of Oceanography Faculty Publications text 2023 ftunivrhodeislan https://doi.org/10.1029/2022JC018756 2024-01-08T19:10:01Z The Northwest Atlantic Shelf and Slope have warmed dramatically in the past decade, changing marine life and challenging fisheries management. A rapid warming event in 2009/2010, linked to a reduced supply of cold water from the Labrador Sea, pushed this region to a new state of unprecedentedly high temperatures that persists today. However, a mechanistic understanding of how the Labrador Current connectivity is reduced at the Tail of the Grand Banks of Newfoundland has been lacking. Here, we present the results of a 25-year (1993–2017) Lagrangian analysis using the HYbrid Coordinate Ocean Model. Synthetic particles were released in the vicinity of the Labrador Current upstream of the Grand Banks and tracked in a 2-D velocity field. We found that the Labrador Current can be completely blocked by Gulf Stream eddies and meanders that impinge on the shelf break along the Grand Banks. This blocking can occur in many different locations at, upstream, or downstream of the Tail of the Grand Banks, since the Labrador Current needs a clear passage over a long distance to continue its path. In the simulation, the Labrador Current has been blocked more often since 2008, which led to the warming of the Northwest Atlantic Shelf and Slope. These results, which are consistent with satellite observations, can provide predictability for the New England and Nova Scotia shelf environments potentially helpful for ecosystem management. Text Labrador Sea Newfoundland Northwest Atlantic University of Rhode Island: DigitalCommons@URI Clear Passage ENVELOPE(-129.983,-129.983,53.553,53.553) Newfoundland Journal of Geophysical Research: Oceans 128 3 |
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University of Rhode Island: DigitalCommons@URI |
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ftunivrhodeislan |
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description |
The Northwest Atlantic Shelf and Slope have warmed dramatically in the past decade, changing marine life and challenging fisheries management. A rapid warming event in 2009/2010, linked to a reduced supply of cold water from the Labrador Sea, pushed this region to a new state of unprecedentedly high temperatures that persists today. However, a mechanistic understanding of how the Labrador Current connectivity is reduced at the Tail of the Grand Banks of Newfoundland has been lacking. Here, we present the results of a 25-year (1993–2017) Lagrangian analysis using the HYbrid Coordinate Ocean Model. Synthetic particles were released in the vicinity of the Labrador Current upstream of the Grand Banks and tracked in a 2-D velocity field. We found that the Labrador Current can be completely blocked by Gulf Stream eddies and meanders that impinge on the shelf break along the Grand Banks. This blocking can occur in many different locations at, upstream, or downstream of the Tail of the Grand Banks, since the Labrador Current needs a clear passage over a long distance to continue its path. In the simulation, the Labrador Current has been blocked more often since 2008, which led to the warming of the Northwest Atlantic Shelf and Slope. These results, which are consistent with satellite observations, can provide predictability for the New England and Nova Scotia shelf environments potentially helpful for ecosystem management. |
format |
Text |
author |
Gonçalves Neto, Afonso Palter, Jaime B. Xu, Xiaobiao Fratantoni, Paula |
spellingShingle |
Gonçalves Neto, Afonso Palter, Jaime B. Xu, Xiaobiao Fratantoni, Paula Temporal Variability of the Labrador Current Pathways Around the Tail of the Grand Banks at Intermediate Depths in a High-Resolution Ocean Circulation Model |
author_facet |
Gonçalves Neto, Afonso Palter, Jaime B. Xu, Xiaobiao Fratantoni, Paula |
author_sort |
Gonçalves Neto, Afonso |
title |
Temporal Variability of the Labrador Current Pathways Around the Tail of the Grand Banks at Intermediate Depths in a High-Resolution Ocean Circulation Model |
title_short |
Temporal Variability of the Labrador Current Pathways Around the Tail of the Grand Banks at Intermediate Depths in a High-Resolution Ocean Circulation Model |
title_full |
Temporal Variability of the Labrador Current Pathways Around the Tail of the Grand Banks at Intermediate Depths in a High-Resolution Ocean Circulation Model |
title_fullStr |
Temporal Variability of the Labrador Current Pathways Around the Tail of the Grand Banks at Intermediate Depths in a High-Resolution Ocean Circulation Model |
title_full_unstemmed |
Temporal Variability of the Labrador Current Pathways Around the Tail of the Grand Banks at Intermediate Depths in a High-Resolution Ocean Circulation Model |
title_sort |
temporal variability of the labrador current pathways around the tail of the grand banks at intermediate depths in a high-resolution ocean circulation model |
publisher |
DigitalCommons@URI |
publishDate |
2023 |
url |
https://digitalcommons.uri.edu/gsofacpubs/2039 https://doi.org/10.1029/2022JC018756 |
long_lat |
ENVELOPE(-129.983,-129.983,53.553,53.553) |
geographic |
Clear Passage Newfoundland |
geographic_facet |
Clear Passage Newfoundland |
genre |
Labrador Sea Newfoundland Northwest Atlantic |
genre_facet |
Labrador Sea Newfoundland Northwest Atlantic |
op_source |
Graduate School of Oceanography Faculty Publications |
op_relation |
https://digitalcommons.uri.edu/gsofacpubs/2039 doi:10.1029/2022JC018756 https://doi.org/10.1029/2022JC018756 |
op_doi |
https://doi.org/10.1029/2022JC018756 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
128 |
container_issue |
3 |
_version_ |
1789968161637924864 |