Interannual variation of summer sea surface temperature in the Amundsen Sea, Antarctica
This paper investigates the interannual variability of January sea surface temperature (SST) in the Amundsen Sea (AS) during the period 1982–2022. SST in the Pine Island Bay (PIB) is found to exhibit the most significant interannual variation, with a standard deviation up to 0.6°. Composite analysis...
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ftdoajarticles:oai:doaj.org/article:bbaadb6805d44c04b9040750b1991987 2023-05-15T13:23:32+02:00 Interannual variation of summer sea surface temperature in the Amundsen Sea, Antarctica Lu-Sha Yu Hailun He Hengling Leng Hailong Liu Pengfei Lin 2023-03-01T00:00:00Z https://doi.org/10.3389/fmars.2023.1050955 https://doaj.org/article/bbaadb6805d44c04b9040750b1991987 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmars.2023.1050955/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2023.1050955 https://doaj.org/article/bbaadb6805d44c04b9040750b1991987 Frontiers in Marine Science, Vol 10 (2023) Amundsen Sea summer sea surface temperature interannual variability Pine Island Bay sea ice concentration Amundsen Sea low-associated wind Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2023 ftdoajarticles https://doi.org/10.3389/fmars.2023.1050955 2023-03-26T01:36:25Z This paper investigates the interannual variability of January sea surface temperature (SST) in the Amundsen Sea (AS) during the period 1982–2022. SST in the Pine Island Bay (PIB) is found to exhibit the most significant interannual variation, with a standard deviation up to 0.6°. Composite analysis indicates that, in warmer years, the January SST at PIB is approximately 1° higher on average than that in cooler years, and its variation in warmer (cooler) years corresponds to lower (higher) sea ice concentration (SIC) and more (less) surface heat flux; the latter factor is primarily influenced by the albedo of SIC. Further analysis suggests that variability in January SIC is largely dominated by northward sea ice motion during the previous November (r = −0.82), which is consistent with the presence of a contemporaneous northerly 10 m wind anomaly trigged by the Amundsen Sea Low (ASL). The ASL-associated northerly wind anomaly drives northward sea ice motion, reduces SIC, and thus increases the downward heat flux that ultimately results in warmer SST, and vice versa. This study identifies the possible mechanism of anomalous January SST in the PIB, which could provide an important clue for seasonal forecasts of summer SST in the AS. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctica Pine Island Pine Island Bay Sea ice Directory of Open Access Journals: DOAJ Articles Amundsen Sea Island Bay ENVELOPE(-109.085,-109.085,59.534,59.534) Pine Island Bay ENVELOPE(-102.000,-102.000,-74.750,-74.750) Frontiers in Marine Science 10 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Amundsen Sea summer sea surface temperature interannual variability Pine Island Bay sea ice concentration Amundsen Sea low-associated wind Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
Amundsen Sea summer sea surface temperature interannual variability Pine Island Bay sea ice concentration Amundsen Sea low-associated wind Science Q General. Including nature conservation geographical distribution QH1-199.5 Lu-Sha Yu Hailun He Hengling Leng Hailong Liu Pengfei Lin Interannual variation of summer sea surface temperature in the Amundsen Sea, Antarctica |
topic_facet |
Amundsen Sea summer sea surface temperature interannual variability Pine Island Bay sea ice concentration Amundsen Sea low-associated wind Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
This paper investigates the interannual variability of January sea surface temperature (SST) in the Amundsen Sea (AS) during the period 1982–2022. SST in the Pine Island Bay (PIB) is found to exhibit the most significant interannual variation, with a standard deviation up to 0.6°. Composite analysis indicates that, in warmer years, the January SST at PIB is approximately 1° higher on average than that in cooler years, and its variation in warmer (cooler) years corresponds to lower (higher) sea ice concentration (SIC) and more (less) surface heat flux; the latter factor is primarily influenced by the albedo of SIC. Further analysis suggests that variability in January SIC is largely dominated by northward sea ice motion during the previous November (r = −0.82), which is consistent with the presence of a contemporaneous northerly 10 m wind anomaly trigged by the Amundsen Sea Low (ASL). The ASL-associated northerly wind anomaly drives northward sea ice motion, reduces SIC, and thus increases the downward heat flux that ultimately results in warmer SST, and vice versa. This study identifies the possible mechanism of anomalous January SST in the PIB, which could provide an important clue for seasonal forecasts of summer SST in the AS. |
format |
Article in Journal/Newspaper |
author |
Lu-Sha Yu Hailun He Hengling Leng Hailong Liu Pengfei Lin |
author_facet |
Lu-Sha Yu Hailun He Hengling Leng Hailong Liu Pengfei Lin |
author_sort |
Lu-Sha Yu |
title |
Interannual variation of summer sea surface temperature in the Amundsen Sea, Antarctica |
title_short |
Interannual variation of summer sea surface temperature in the Amundsen Sea, Antarctica |
title_full |
Interannual variation of summer sea surface temperature in the Amundsen Sea, Antarctica |
title_fullStr |
Interannual variation of summer sea surface temperature in the Amundsen Sea, Antarctica |
title_full_unstemmed |
Interannual variation of summer sea surface temperature in the Amundsen Sea, Antarctica |
title_sort |
interannual variation of summer sea surface temperature in the amundsen sea, antarctica |
publisher |
Frontiers Media S.A. |
publishDate |
2023 |
url |
https://doi.org/10.3389/fmars.2023.1050955 https://doaj.org/article/bbaadb6805d44c04b9040750b1991987 |
long_lat |
ENVELOPE(-109.085,-109.085,59.534,59.534) ENVELOPE(-102.000,-102.000,-74.750,-74.750) |
geographic |
Amundsen Sea Island Bay Pine Island Bay |
geographic_facet |
Amundsen Sea Island Bay Pine Island Bay |
genre |
Amundsen Sea Antarc* Antarctica Pine Island Pine Island Bay Sea ice |
genre_facet |
Amundsen Sea Antarc* Antarctica Pine Island Pine Island Bay Sea ice |
op_source |
Frontiers in Marine Science, Vol 10 (2023) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmars.2023.1050955/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2023.1050955 https://doaj.org/article/bbaadb6805d44c04b9040750b1991987 |
op_doi |
https://doi.org/10.3389/fmars.2023.1050955 |
container_title |
Frontiers in Marine Science |
container_volume |
10 |
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1766372972469157888 |