Antarctic sea‐ice variation associated with vertical geopotential height and temperature anomalies
Abstract It is well‐known that the increasing zonal‐mean trend of sea‐ice concentration (SIC) surrounding Antarctica is up to 2015 so this paper first summarized this trend with opposing regional trends in each season along the latitude band 60°–70°S during 1979–2015. The surface wind trends can par...
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crwiley:10.1002/joc.6161 2023-10-29T02:31:50+01:00 Antarctic sea‐ice variation associated with vertical geopotential height and temperature anomalies Qian, Weihong Wu, Kaijun Leung, Jeremy Cheuk‐Hin National Natural Science Foundation of China Fundamental Research Funds for the Central Universities 2019 http://dx.doi.org/10.1002/joc.6161 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6161 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6161 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6161 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 39, issue 14, page 5380-5395 ISSN 0899-8418 1097-0088 Atmospheric Science journal-article 2019 crwiley https://doi.org/10.1002/joc.6161 2023-10-02T17:35:51Z Abstract It is well‐known that the increasing zonal‐mean trend of sea‐ice concentration (SIC) surrounding Antarctica is up to 2015 so this paper first summarized this trend with opposing regional trends in each season along the latitude band 60°–70°S during 1979–2015. The surface wind trends can partly explain the observed regional SIC trends. By analysing the surface wind, as well as the tropospheric geopotential height (GPH) and temperature trends, the study revealed that the increasing zonal‐mean SIC trend and opposing regional SIC trends surrounding Antarctica are vertically associated with GPH and temperature trends in the troposphere. This relationship is also found in extreme years for seven SIC maximum and four SIC minimum autumns from 1979 to 2015, particularly reconfirmed in the two SIC minimum autumns of 2017 and 2018, indicating that a positive regional SIC anomaly is vertically associated with an anomalously cold air mass centred around 850 hPa in the troposphere which is located beneath a negative GPH anomaly at the upper troposphere, and vice versa. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice Wiley Online Library (via Crossref) International Journal of Climatology 39 14 5380 5395 |
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Open Polar |
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Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Atmospheric Science |
spellingShingle |
Atmospheric Science Qian, Weihong Wu, Kaijun Leung, Jeremy Cheuk‐Hin Antarctic sea‐ice variation associated with vertical geopotential height and temperature anomalies |
topic_facet |
Atmospheric Science |
description |
Abstract It is well‐known that the increasing zonal‐mean trend of sea‐ice concentration (SIC) surrounding Antarctica is up to 2015 so this paper first summarized this trend with opposing regional trends in each season along the latitude band 60°–70°S during 1979–2015. The surface wind trends can partly explain the observed regional SIC trends. By analysing the surface wind, as well as the tropospheric geopotential height (GPH) and temperature trends, the study revealed that the increasing zonal‐mean SIC trend and opposing regional SIC trends surrounding Antarctica are vertically associated with GPH and temperature trends in the troposphere. This relationship is also found in extreme years for seven SIC maximum and four SIC minimum autumns from 1979 to 2015, particularly reconfirmed in the two SIC minimum autumns of 2017 and 2018, indicating that a positive regional SIC anomaly is vertically associated with an anomalously cold air mass centred around 850 hPa in the troposphere which is located beneath a negative GPH anomaly at the upper troposphere, and vice versa. |
author2 |
National Natural Science Foundation of China Fundamental Research Funds for the Central Universities |
format |
Article in Journal/Newspaper |
author |
Qian, Weihong Wu, Kaijun Leung, Jeremy Cheuk‐Hin |
author_facet |
Qian, Weihong Wu, Kaijun Leung, Jeremy Cheuk‐Hin |
author_sort |
Qian, Weihong |
title |
Antarctic sea‐ice variation associated with vertical geopotential height and temperature anomalies |
title_short |
Antarctic sea‐ice variation associated with vertical geopotential height and temperature anomalies |
title_full |
Antarctic sea‐ice variation associated with vertical geopotential height and temperature anomalies |
title_fullStr |
Antarctic sea‐ice variation associated with vertical geopotential height and temperature anomalies |
title_full_unstemmed |
Antarctic sea‐ice variation associated with vertical geopotential height and temperature anomalies |
title_sort |
antarctic sea‐ice variation associated with vertical geopotential height and temperature anomalies |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/joc.6161 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6161 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6161 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6161 |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_source |
International Journal of Climatology volume 39, issue 14, page 5380-5395 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.6161 |
container_title |
International Journal of Climatology |
container_volume |
39 |
container_issue |
14 |
container_start_page |
5380 |
op_container_end_page |
5395 |
_version_ |
1781052649047588864 |