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 |
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ftmdpi:oai:mdpi.com:/2073-4433/14/2/218/ 2023-08-20T04:01:55+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 agris 2023-01-20 application/pdf https://doi.org/10.3390/atmos14020218 EN eng Multidisciplinary Digital Publishing Institute Climatology https://dx.doi.org/10.3390/atmos14020218 https://creativecommons.org/licenses/by/4.0/ Atmosphere; Volume 14; Issue 2; Pages: 218 Antarctic ice sheet temperature Antarctic amplification reconstruction Text 2023 ftmdpi https://doi.org/10.3390/atmos14020218 2023-08-01T08:24:35Z 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. Text Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet West Antarctica MDPI Open Access Publishing Antarctic The Antarctic Antarctic Peninsula East Antarctica Austral West Antarctica Atmosphere 14 2 218 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
Antarctic ice sheet temperature Antarctic amplification reconstruction |
spellingShingle |
Antarctic ice sheet temperature Antarctic amplification reconstruction 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 |
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 |
Text |
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 |
Multidisciplinary Digital Publishing Institute |
publishDate |
2023 |
url |
https://doi.org/10.3390/atmos14020218 |
op_coverage |
agris |
geographic |
Antarctic The Antarctic Antarctic Peninsula East Antarctica Austral West Antarctica |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula East Antarctica Austral 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; Volume 14; Issue 2; Pages: 218 |
op_relation |
Climatology https://dx.doi.org/10.3390/atmos14020218 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
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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1774712312681201664 |