Assessment of Antarctic Amplification Based on a Reconstruction of Near-Surface Air Temperature
Polar amplification has been a research focus in climate research in recent decades. However, little attention has been paid to Antarctic amplification (AnA). We have examined the variations in annual and seasonal temperature over the Antarctic Ice Sheet and its amplification based on reconstruction...
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2023
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Online Access: | https://doi.org/10.3390/atmos14020218 https://doaj.org/article/24e2acb73002467e98c66a0a0cf69c20 |
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ftdoajarticles:oai:doaj.org/article:24e2acb73002467e98c66a0a0cf69c20 2023-05-15T13:57:11+02:00 Assessment of Antarctic Amplification Based on a Reconstruction of Near-Surface Air Temperature Jiangping Zhu Aihong Xie Xiang Qin Bing Xu Yicheng Wang 2023-01-01T00:00:00Z https://doi.org/10.3390/atmos14020218 https://doaj.org/article/24e2acb73002467e98c66a0a0cf69c20 EN eng MDPI AG https://www.mdpi.com/2073-4433/14/2/218 https://doaj.org/toc/2073-4433 doi:10.3390/atmos14020218 2073-4433 https://doaj.org/article/24e2acb73002467e98c66a0a0cf69c20 Atmosphere, Vol 14, Iss 218, p 218 (2023) Antarctic ice sheet temperature Antarctic amplification reconstruction Meteorology. Climatology QC851-999 article 2023 ftdoajarticles https://doi.org/10.3390/atmos14020218 2023-02-26T01:31:23Z Polar amplification has been a research focus in climate research in recent decades. However, little attention has been paid to Antarctic amplification (AnA). We have examined the variations in annual and seasonal temperature over the Antarctic Ice Sheet and its amplification based on reconstruction covering the period 2002–2018. The results show the occurrence of annual and seasonal AnA, with an AnA index greater than 1.39 with seasonal differences, and that AnA is strong in the austral winter and spring. Moreover, AnA displays regional differences, with the greatest amplification occurring in East Antarctica, with an AnA index greater than 1.51, followed by West Antarctica. AnA is always absent in the Antarctic Peninsula. In addition, amplification in East Antarctica is most conspicuous in spring, which corresponds to the obvious warming in this season; and the spring amplification signal is weakest for West Antarctica. When considering the influence of the ocean, the AnA becomes obvious, compared to when only the land is considered. Southern Annular Mode (SAM), surface pressure and westerlies work together to affect the temperature change over Antarctica and AnA; and SAM and surface pressure are highly correlated with the temperature change over East Antarctica. The picture reflects the accelerated changes in Antarctic temperature. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet West Antarctica Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula Austral East Antarctica The Antarctic West Antarctica Atmosphere 14 2 218 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Antarctic ice sheet temperature Antarctic amplification reconstruction Meteorology. Climatology QC851-999 |
spellingShingle |
Antarctic ice sheet temperature Antarctic amplification reconstruction Meteorology. Climatology QC851-999 Jiangping Zhu Aihong Xie Xiang Qin Bing Xu Yicheng Wang Assessment of Antarctic Amplification Based on a Reconstruction of Near-Surface Air Temperature |
topic_facet |
Antarctic ice sheet temperature Antarctic amplification reconstruction Meteorology. Climatology QC851-999 |
description |
Polar amplification has been a research focus in climate research in recent decades. However, little attention has been paid to Antarctic amplification (AnA). We have examined the variations in annual and seasonal temperature over the Antarctic Ice Sheet and its amplification based on reconstruction covering the period 2002–2018. The results show the occurrence of annual and seasonal AnA, with an AnA index greater than 1.39 with seasonal differences, and that AnA is strong in the austral winter and spring. Moreover, AnA displays regional differences, with the greatest amplification occurring in East Antarctica, with an AnA index greater than 1.51, followed by West Antarctica. AnA is always absent in the Antarctic Peninsula. In addition, amplification in East Antarctica is most conspicuous in spring, which corresponds to the obvious warming in this season; and the spring amplification signal is weakest for West Antarctica. When considering the influence of the ocean, the AnA becomes obvious, compared to when only the land is considered. Southern Annular Mode (SAM), surface pressure and westerlies work together to affect the temperature change over Antarctica and AnA; and SAM and surface pressure are highly correlated with the temperature change over East Antarctica. The picture reflects the accelerated changes in Antarctic temperature. |
format |
Article in Journal/Newspaper |
author |
Jiangping Zhu Aihong Xie Xiang Qin Bing Xu Yicheng Wang |
author_facet |
Jiangping Zhu Aihong Xie Xiang Qin Bing Xu Yicheng Wang |
author_sort |
Jiangping Zhu |
title |
Assessment of Antarctic Amplification Based on a Reconstruction of Near-Surface Air Temperature |
title_short |
Assessment of Antarctic Amplification Based on a Reconstruction of Near-Surface Air Temperature |
title_full |
Assessment of Antarctic Amplification Based on a Reconstruction of Near-Surface Air Temperature |
title_fullStr |
Assessment of Antarctic Amplification Based on a Reconstruction of Near-Surface Air Temperature |
title_full_unstemmed |
Assessment of Antarctic Amplification Based on a Reconstruction of Near-Surface Air Temperature |
title_sort |
assessment of antarctic amplification based on a reconstruction of near-surface air temperature |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/atmos14020218 https://doaj.org/article/24e2acb73002467e98c66a0a0cf69c20 |
geographic |
Antarctic Antarctic Peninsula Austral East Antarctica The Antarctic West Antarctica |
geographic_facet |
Antarctic Antarctic Peninsula Austral East Antarctica The Antarctic West Antarctica |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet West Antarctica |
op_source |
Atmosphere, Vol 14, Iss 218, p 218 (2023) |
op_relation |
https://www.mdpi.com/2073-4433/14/2/218 https://doaj.org/toc/2073-4433 doi:10.3390/atmos14020218 2073-4433 https://doaj.org/article/24e2acb73002467e98c66a0a0cf69c20 |
op_doi |
https://doi.org/10.3390/atmos14020218 |
container_title |
Atmosphere |
container_volume |
14 |
container_issue |
2 |
container_start_page |
218 |
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1766264797423206400 |