The intraseasonal variability of winter semester surface air temperature in Antarctica
This study investigates systematically the intraseasonal variability of surface air temperature over Antarctica by applying empirical orthogonal function (EOF) analysis to the National Centers for Environmental Prediction, US Department of Energy, Reanalysis 2 data set for the period of 1979 through...
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ftjpolarres:oai:journals.openacademia.net:article/3046 2023-05-15T14:01:21+02:00 The intraseasonal variability of winter semester surface air temperature in Antarctica Yu, Lejiang Zhang, Zhanhai Zhou, Mingyu Zhong, Shiyuan Sun, Bo Hsu, Hsiaoming Gao, Zhiqiu Wu, Huiding Ban, Junmei 2011-02-22 application/pdf text/html application/epub+zip text/xml https://polarresearch.net/index.php/polar/article/view/3046 https://doi.org/10.3402/polar.v30i0.6039 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/3046/pdf_91 https://polarresearch.net/index.php/polar/article/view/3046/html_94 https://polarresearch.net/index.php/polar/article/view/3046/6891 https://polarresearch.net/index.php/polar/article/view/3046/xml_94 https://polarresearch.net/index.php/polar/article/view/3046 doi:10.3402/polar.v30i0.6039 Copyright (c) 2018 Polar Research Polar Research; Vol 30 (2011) 1751-8369 Antarctic climate surface air temperature intraseasonal variability Antarctic Oscillation info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2011 ftjpolarres https://doi.org/10.3402/polar.v30i0.6039 2021-11-11T19:13:37Z This study investigates systematically the intraseasonal variability of surface air temperature over Antarctica by applying empirical orthogonal function (EOF) analysis to the National Centers for Environmental Prediction, US Department of Energy, Reanalysis 2 data set for the period of 1979 through 2007. The results reveal the existence of two major intraseasonal oscillations of surface temperature with periods of 26 - 30 days and 14 days during the Antarctic winter season in the region south of 60°S. The first EOF mode shows a nearly uniform spatial pattern in Antarctica and the Southern Ocean associated with the Antarctic Oscillation. The mode-1 intraseasonal variability of the surface temperature leads that of upper atmosphere by one day with the largest correlation at 300-hPa level geopotential heights. The intraseasonal variability of the mode-1 EOF is closely related to the variations of surface net longwave radiation the total cloud cover over Antarctica. The other major EOF modes reveal the existence of eastward propagating phases over the Southern Ocean and marginal region in Antarctica. The leading two propagating modes respond to Pacific-South American modes. Meridional winds induced by the wave train from the tropics have a direct influence on the surface air temperature over the Southern Ocean and the marginal region of the Antarctic continent. Key words: Antarctic climate, surface air temperature, intraseasonal variability, Antarctic Oscillation (Published: 22 February 2011) Citation: Polar Research 2011, 30, 6039, DOI:10.3402/polar.v30i0.6039 Article in Journal/Newspaper Antarc* Antarctic Antarctica Polar Research Southern Ocean Polar Research (E-Journal) Antarctic Southern Ocean The Antarctic Pacific Polar Research 30 1 6039 |
institution |
Open Polar |
collection |
Polar Research (E-Journal) |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Antarctic climate surface air temperature intraseasonal variability Antarctic Oscillation |
spellingShingle |
Antarctic climate surface air temperature intraseasonal variability Antarctic Oscillation Yu, Lejiang Zhang, Zhanhai Zhou, Mingyu Zhong, Shiyuan Sun, Bo Hsu, Hsiaoming Gao, Zhiqiu Wu, Huiding Ban, Junmei The intraseasonal variability of winter semester surface air temperature in Antarctica |
topic_facet |
Antarctic climate surface air temperature intraseasonal variability Antarctic Oscillation |
description |
This study investigates systematically the intraseasonal variability of surface air temperature over Antarctica by applying empirical orthogonal function (EOF) analysis to the National Centers for Environmental Prediction, US Department of Energy, Reanalysis 2 data set for the period of 1979 through 2007. The results reveal the existence of two major intraseasonal oscillations of surface temperature with periods of 26 - 30 days and 14 days during the Antarctic winter season in the region south of 60°S. The first EOF mode shows a nearly uniform spatial pattern in Antarctica and the Southern Ocean associated with the Antarctic Oscillation. The mode-1 intraseasonal variability of the surface temperature leads that of upper atmosphere by one day with the largest correlation at 300-hPa level geopotential heights. The intraseasonal variability of the mode-1 EOF is closely related to the variations of surface net longwave radiation the total cloud cover over Antarctica. The other major EOF modes reveal the existence of eastward propagating phases over the Southern Ocean and marginal region in Antarctica. The leading two propagating modes respond to Pacific-South American modes. Meridional winds induced by the wave train from the tropics have a direct influence on the surface air temperature over the Southern Ocean and the marginal region of the Antarctic continent. Key words: Antarctic climate, surface air temperature, intraseasonal variability, Antarctic Oscillation (Published: 22 February 2011) Citation: Polar Research 2011, 30, 6039, DOI:10.3402/polar.v30i0.6039 |
format |
Article in Journal/Newspaper |
author |
Yu, Lejiang Zhang, Zhanhai Zhou, Mingyu Zhong, Shiyuan Sun, Bo Hsu, Hsiaoming Gao, Zhiqiu Wu, Huiding Ban, Junmei |
author_facet |
Yu, Lejiang Zhang, Zhanhai Zhou, Mingyu Zhong, Shiyuan Sun, Bo Hsu, Hsiaoming Gao, Zhiqiu Wu, Huiding Ban, Junmei |
author_sort |
Yu, Lejiang |
title |
The intraseasonal variability of winter semester surface air temperature in Antarctica |
title_short |
The intraseasonal variability of winter semester surface air temperature in Antarctica |
title_full |
The intraseasonal variability of winter semester surface air temperature in Antarctica |
title_fullStr |
The intraseasonal variability of winter semester surface air temperature in Antarctica |
title_full_unstemmed |
The intraseasonal variability of winter semester surface air temperature in Antarctica |
title_sort |
intraseasonal variability of winter semester surface air temperature in antarctica |
publisher |
Norwegian Polar Institute |
publishDate |
2011 |
url |
https://polarresearch.net/index.php/polar/article/view/3046 https://doi.org/10.3402/polar.v30i0.6039 |
geographic |
Antarctic Southern Ocean The Antarctic Pacific |
geographic_facet |
Antarctic Southern Ocean The Antarctic Pacific |
genre |
Antarc* Antarctic Antarctica Polar Research Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Polar Research Southern Ocean |
op_source |
Polar Research; Vol 30 (2011) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/3046/pdf_91 https://polarresearch.net/index.php/polar/article/view/3046/html_94 https://polarresearch.net/index.php/polar/article/view/3046/6891 https://polarresearch.net/index.php/polar/article/view/3046/xml_94 https://polarresearch.net/index.php/polar/article/view/3046 doi:10.3402/polar.v30i0.6039 |
op_rights |
Copyright (c) 2018 Polar Research |
op_doi |
https://doi.org/10.3402/polar.v30i0.6039 |
container_title |
Polar Research |
container_volume |
30 |
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1 |
container_start_page |
6039 |
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1766271095599529984 |