Spatio-temporal analysis of east greenland polar front
The East Greenland Polar Front (EGPF) is an important front with strong salinity and temperature gradients in the Nordic Seas. It is formed by the interaction between Arctic-origin and Atlantic-origin water. The variations of EGPF are closely linked with sea ice melting and heat content transport as...
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Online Access: | http://dx.doi.org/10.3389/fmars.2022.943457 https://www.frontiersin.org/articles/10.3389/fmars.2022.943457/full |
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crfrontiers:10.3389/fmars.2022.943457 2024-09-30T14:30:39+00:00 Spatio-temporal analysis of east greenland polar front Liu, Yu Wang, Jianhui Han, Guoqing Lin, Xiayan Yang, Guijing Ji, Qiyan 2022 http://dx.doi.org/10.3389/fmars.2022.943457 https://www.frontiersin.org/articles/10.3389/fmars.2022.943457/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Marine Science volume 9 ISSN 2296-7745 journal-article 2022 crfrontiers https://doi.org/10.3389/fmars.2022.943457 2024-09-17T04:12:54Z The East Greenland Polar Front (EGPF) is an important front with strong salinity and temperature gradients in the Nordic Seas. It is formed by the interaction between Arctic-origin and Atlantic-origin water. The variations of EGPF are closely linked with sea ice melting and heat content transport associated with North Atlantic water recirculation. For a three-dimensional (3D) daily analysis, we use the global ocean eddy resolution reanalysis product (GLORYS12V1) from 1993 to 2018 to calculate the salinity and temperature horizontal gradient in the upper ocean and obtain the spatiotemporal distribution and intensity characteristics of EGPF. After assessment, the thresholds of the salinity and temperature fronts are set to 0.04 psu/km and 0.09°C/km, respectively. Compared with satellite observations of sea ice concentration, a significant spatial relationship is observed between the main position of EGPF and the ice edge before the sea ice shrinks to the continental shelf sea area. Affected by the freshening of the Arctic-origin water due to the melting of the sea ice, the intensity and area of EGPF show significant seasonal variations. Against the background of global warming, the sea ice area presents an obvious decreasing trend in the Greenland Sea. The melting of sea ice increased annually every summer from 1998 to 2018. The heat content transport of the Atlantic-origin water has also increased in recent years. The 3D characteristics (intensity and volume) of EGPF as salinity and temperature fronts exhibit increasing trends. Article in Journal/Newspaper Arctic East Greenland Global warming Greenland Greenland Sea Nordic Seas North Atlantic Sea ice Frontiers (Publisher) Arctic Greenland Frontiers in Marine Science 9 |
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The East Greenland Polar Front (EGPF) is an important front with strong salinity and temperature gradients in the Nordic Seas. It is formed by the interaction between Arctic-origin and Atlantic-origin water. The variations of EGPF are closely linked with sea ice melting and heat content transport associated with North Atlantic water recirculation. For a three-dimensional (3D) daily analysis, we use the global ocean eddy resolution reanalysis product (GLORYS12V1) from 1993 to 2018 to calculate the salinity and temperature horizontal gradient in the upper ocean and obtain the spatiotemporal distribution and intensity characteristics of EGPF. After assessment, the thresholds of the salinity and temperature fronts are set to 0.04 psu/km and 0.09°C/km, respectively. Compared with satellite observations of sea ice concentration, a significant spatial relationship is observed between the main position of EGPF and the ice edge before the sea ice shrinks to the continental shelf sea area. Affected by the freshening of the Arctic-origin water due to the melting of the sea ice, the intensity and area of EGPF show significant seasonal variations. Against the background of global warming, the sea ice area presents an obvious decreasing trend in the Greenland Sea. The melting of sea ice increased annually every summer from 1998 to 2018. The heat content transport of the Atlantic-origin water has also increased in recent years. The 3D characteristics (intensity and volume) of EGPF as salinity and temperature fronts exhibit increasing trends. |
format |
Article in Journal/Newspaper |
author |
Liu, Yu Wang, Jianhui Han, Guoqing Lin, Xiayan Yang, Guijing Ji, Qiyan |
spellingShingle |
Liu, Yu Wang, Jianhui Han, Guoqing Lin, Xiayan Yang, Guijing Ji, Qiyan Spatio-temporal analysis of east greenland polar front |
author_facet |
Liu, Yu Wang, Jianhui Han, Guoqing Lin, Xiayan Yang, Guijing Ji, Qiyan |
author_sort |
Liu, Yu |
title |
Spatio-temporal analysis of east greenland polar front |
title_short |
Spatio-temporal analysis of east greenland polar front |
title_full |
Spatio-temporal analysis of east greenland polar front |
title_fullStr |
Spatio-temporal analysis of east greenland polar front |
title_full_unstemmed |
Spatio-temporal analysis of east greenland polar front |
title_sort |
spatio-temporal analysis of east greenland polar front |
publisher |
Frontiers Media SA |
publishDate |
2022 |
url |
http://dx.doi.org/10.3389/fmars.2022.943457 https://www.frontiersin.org/articles/10.3389/fmars.2022.943457/full |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic East Greenland Global warming Greenland Greenland Sea Nordic Seas North Atlantic Sea ice |
genre_facet |
Arctic East Greenland Global warming Greenland Greenland Sea Nordic Seas North Atlantic Sea ice |
op_source |
Frontiers in Marine Science volume 9 ISSN 2296-7745 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmars.2022.943457 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
_version_ |
1811635510334980096 |