On Barotropic Response of Arctic Seas to Polar Lows: A Case Study in the Barents Sea
In the present paper, we investigate the sea surface height (SSH) anomalies caused by polar lows (PLs) crossing the central part of the Barents Sea and verify if the barotropic response is detectable in the shallow Arctic seas. Analysis of the SSH anomalies in response to the passage of two PLs is p...
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ftdoajarticles:oai:doaj.org/article:0887dffea1c2473cb1a9e27da4547d3a 2023-10-09T21:48:53+02:00 On Barotropic Response of Arctic Seas to Polar Lows: A Case Study in the Barents Sea Vladimir Kudryavtsev Anastasiia Stokoz Kirill Khvorostovsky 2023-08-01T00:00:00Z https://doi.org/10.3390/rs15174239 https://doaj.org/article/0887dffea1c2473cb1a9e27da4547d3a EN eng MDPI AG https://www.mdpi.com/2072-4292/15/17/4239 https://doaj.org/toc/2072-4292 doi:10.3390/rs15174239 2072-4292 https://doaj.org/article/0887dffea1c2473cb1a9e27da4547d3a Remote Sensing, Vol 15, Iss 4239, p 4239 (2023) polar low ocean barotropic response air-sea interaction satellite altimetry sea surface height anomaly Science Q article 2023 ftdoajarticles https://doi.org/10.3390/rs15174239 2023-09-10T00:34:43Z In the present paper, we investigate the sea surface height (SSH) anomalies caused by polar lows (PLs) crossing the central part of the Barents Sea and verify if the barotropic response is detectable in the shallow Arctic seas. Analysis of the SSH anomalies in response to the passage of two PLs is performed using satellite altimeter measurements and model simulations. The observed SSH anomalies contained an inverse barometer correction; therefore, they were presumably caused only by the action of surface wind stress in the PLs. The SSH anomalies along the satellite altimeter tracks had the shape of a trough, with the lowest surface height near the center of the PL. The observed anomalies were well distinguished within about one day after the PL passage, with the largest negative value of 0.6 m. The SSH anomalies are analyzed using a simplified model of the ocean barotropic response to the surface wind stress, derived from the hourly wind fields provided in the ERA5 reanalysis dataset. The model quantitatively reproduced the SSH anomalies along most satellite altimeter tracks crossing the PL trajectories. The model simulations revealed that the largest negative SSH anomalies were observed in areas where the PL translation velocity was low and its moving direction changed with the trajectory curvature radius, which was much smaller than the barotropic radius of deformation. The estimated quasi-geostrophic current velocities corresponding to the SSH anomalies in the wakes of the PLs reached 0.15 m/s, which were comparable to the current velocities observed in the Barents Sea. Article in Journal/Newspaper Arctic Barents Sea Directory of Open Access Journals: DOAJ Articles Arctic Barents Sea Remote Sensing 15 17 4239 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
polar low ocean barotropic response air-sea interaction satellite altimetry sea surface height anomaly Science Q |
spellingShingle |
polar low ocean barotropic response air-sea interaction satellite altimetry sea surface height anomaly Science Q Vladimir Kudryavtsev Anastasiia Stokoz Kirill Khvorostovsky On Barotropic Response of Arctic Seas to Polar Lows: A Case Study in the Barents Sea |
topic_facet |
polar low ocean barotropic response air-sea interaction satellite altimetry sea surface height anomaly Science Q |
description |
In the present paper, we investigate the sea surface height (SSH) anomalies caused by polar lows (PLs) crossing the central part of the Barents Sea and verify if the barotropic response is detectable in the shallow Arctic seas. Analysis of the SSH anomalies in response to the passage of two PLs is performed using satellite altimeter measurements and model simulations. The observed SSH anomalies contained an inverse barometer correction; therefore, they were presumably caused only by the action of surface wind stress in the PLs. The SSH anomalies along the satellite altimeter tracks had the shape of a trough, with the lowest surface height near the center of the PL. The observed anomalies were well distinguished within about one day after the PL passage, with the largest negative value of 0.6 m. The SSH anomalies are analyzed using a simplified model of the ocean barotropic response to the surface wind stress, derived from the hourly wind fields provided in the ERA5 reanalysis dataset. The model quantitatively reproduced the SSH anomalies along most satellite altimeter tracks crossing the PL trajectories. The model simulations revealed that the largest negative SSH anomalies were observed in areas where the PL translation velocity was low and its moving direction changed with the trajectory curvature radius, which was much smaller than the barotropic radius of deformation. The estimated quasi-geostrophic current velocities corresponding to the SSH anomalies in the wakes of the PLs reached 0.15 m/s, which were comparable to the current velocities observed in the Barents Sea. |
format |
Article in Journal/Newspaper |
author |
Vladimir Kudryavtsev Anastasiia Stokoz Kirill Khvorostovsky |
author_facet |
Vladimir Kudryavtsev Anastasiia Stokoz Kirill Khvorostovsky |
author_sort |
Vladimir Kudryavtsev |
title |
On Barotropic Response of Arctic Seas to Polar Lows: A Case Study in the Barents Sea |
title_short |
On Barotropic Response of Arctic Seas to Polar Lows: A Case Study in the Barents Sea |
title_full |
On Barotropic Response of Arctic Seas to Polar Lows: A Case Study in the Barents Sea |
title_fullStr |
On Barotropic Response of Arctic Seas to Polar Lows: A Case Study in the Barents Sea |
title_full_unstemmed |
On Barotropic Response of Arctic Seas to Polar Lows: A Case Study in the Barents Sea |
title_sort |
on barotropic response of arctic seas to polar lows: a case study in the barents sea |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/rs15174239 https://doaj.org/article/0887dffea1c2473cb1a9e27da4547d3a |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea |
genre_facet |
Arctic Barents Sea |
op_source |
Remote Sensing, Vol 15, Iss 4239, p 4239 (2023) |
op_relation |
https://www.mdpi.com/2072-4292/15/17/4239 https://doaj.org/toc/2072-4292 doi:10.3390/rs15174239 2072-4292 https://doaj.org/article/0887dffea1c2473cb1a9e27da4547d3a |
op_doi |
https://doi.org/10.3390/rs15174239 |
container_title |
Remote Sensing |
container_volume |
15 |
container_issue |
17 |
container_start_page |
4239 |
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