Mesoscale variability linked to interannual displacement of gulf stream
The impacts of interannual oscillations of the Gulf Stream (GS) on oceanic mesoscale variability are investigated using satellite observations of sea surface height (SSH) and sea surface temperature (SST) from 1993 to 2018. We show that variations in GS position, strength, and meandering status are...
Published in: | Geophysical Research Letters |
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Language: | English |
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2023
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Online Access: | https://doi.org/10.1029/2022GL102549 |
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ftncar:oai:drupal-site.org:articles_26248 2023-06-11T04:14:38+02:00 Mesoscale variability linked to interannual displacement of gulf stream Guo, Yiming (author) Bishop, Stuart (author) Bryan, Frank (author) Bachman, Scott (author) 2023-04-16 https://doi.org/10.1029/2022GL102549 en eng Geophysical Research Letters--Geophysical Research Letters--0094-8276--1944-8007 articles:26248 doi:10.1029/2022GL102549 Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. article Text 2023 ftncar https://doi.org/10.1029/2022GL102549 2023-05-08T18:10:21Z The impacts of interannual oscillations of the Gulf Stream (GS) on oceanic mesoscale variability are investigated using satellite observations of sea surface height (SSH) and sea surface temperature (SST) from 1993 to 2018. We show that variations in GS position, strength, and meandering status are the dominant spatiotemporal modes in regional SSH variability as they explain over 50% of the total variance. In particular, meridional shift of the GS associated with the large-scale wind variation over the North Atlantic contributes to approximately 30% of SSH variability. We further find that this path displacement mode can drive approximately 15% of regional mesoscale variability in eddy kinetic energy and divergent eddy heat flux. This observational-based evidence of ocean mesoscale response to GS shift infers a potentially important forcing mechanism that could drive eddy-scale ocean variability and has far-reaching implications for regional ocean and ecosystem dynamics in response to climate variation. 1852977 Article in Journal/Newspaper North Atlantic OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Geophysical Research Letters 50 7 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
The impacts of interannual oscillations of the Gulf Stream (GS) on oceanic mesoscale variability are investigated using satellite observations of sea surface height (SSH) and sea surface temperature (SST) from 1993 to 2018. We show that variations in GS position, strength, and meandering status are the dominant spatiotemporal modes in regional SSH variability as they explain over 50% of the total variance. In particular, meridional shift of the GS associated with the large-scale wind variation over the North Atlantic contributes to approximately 30% of SSH variability. We further find that this path displacement mode can drive approximately 15% of regional mesoscale variability in eddy kinetic energy and divergent eddy heat flux. This observational-based evidence of ocean mesoscale response to GS shift infers a potentially important forcing mechanism that could drive eddy-scale ocean variability and has far-reaching implications for regional ocean and ecosystem dynamics in response to climate variation. 1852977 |
author2 |
Guo, Yiming (author) Bishop, Stuart (author) Bryan, Frank (author) Bachman, Scott (author) |
format |
Article in Journal/Newspaper |
title |
Mesoscale variability linked to interannual displacement of gulf stream |
spellingShingle |
Mesoscale variability linked to interannual displacement of gulf stream |
title_short |
Mesoscale variability linked to interannual displacement of gulf stream |
title_full |
Mesoscale variability linked to interannual displacement of gulf stream |
title_fullStr |
Mesoscale variability linked to interannual displacement of gulf stream |
title_full_unstemmed |
Mesoscale variability linked to interannual displacement of gulf stream |
title_sort |
mesoscale variability linked to interannual displacement of gulf stream |
publishDate |
2023 |
url |
https://doi.org/10.1029/2022GL102549 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Geophysical Research Letters--Geophysical Research Letters--0094-8276--1944-8007 articles:26248 doi:10.1029/2022GL102549 |
op_rights |
Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
op_doi |
https://doi.org/10.1029/2022GL102549 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
7 |
_version_ |
1768392789826994176 |