Comparison of features of extreme precipitation between stations in inland and coastal Antarctica
Abstract This study presents different characteristics of precipitation and synoptic‐scale circulation associated with extreme precipitation events in inland and coastal Antarctica. The focus is on two stations, inland Vostok and coastal Casey. We use observed daily precipitation data from years 200...
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crwiley:10.1002/joc.7856 2024-06-02T07:54:55+00:00 Comparison of features of extreme precipitation between stations in inland and coastal Antarctica Yang, Ran Yu, Lejiang Jagovkina, Svetlana Liang, Kaixin Yang, Qinghua National Natural Science Foundation of China Basic and Applied Basic Research Foundation of Guangdong Province 2022 http://dx.doi.org/10.1002/joc.7856 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7856 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.7856 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7856 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 43, issue 2, page 996-1015 ISSN 0899-8418 1097-0088 journal-article 2022 crwiley https://doi.org/10.1002/joc.7856 2024-05-03T11:09:14Z Abstract This study presents different characteristics of precipitation and synoptic‐scale circulation associated with extreme precipitation events in inland and coastal Antarctica. The focus is on two stations, inland Vostok and coastal Casey. We use observed daily precipitation data from years 2004–2017 to investigate and compare the statistics on precipitation at both stations. The key areas for synoptic features favouring extreme precipitation are identified on the basis of air‐mass backward trajectories, computed applying the Lagrangian HYSPLIT model. The air moisture accounting for high‐precipitation events originates from the ocean but in many (some) cases the trajectories cover long distances over the ice sheet before reaching Vostok (Casey). Multiple statistical methods including composite analysis, empirical orthogonal functions (EOF), and self‐organizing maps (SOMs) are used to examine the full view of synoptic patterns. At Vostok in the inland high plateau, ERA‐Interim reanalysis shows that the synoptic patterns governing the extreme precipitation events are relatively complicated. Amplified planetary waves allow water vapour to reach the Vostok Station from different source regions, including the Weddell Sea, Ross Sea, and the Indian Ocean off the Amery Ice Shelf. A dipole structure of negative height anomalies to the west and positive ones to the east of the station is identified as the cause of southward water vapour transport and resulting precipitation at Casey in coastal Antarctica. Article in Journal/Newspaper Amery Ice Shelf Antarc* Antarctica Ice Sheet Ice Shelf Ross Sea Weddell Sea Wiley Online Library Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Amery Ice Shelf ENVELOPE(71.000,71.000,-69.750,-69.750) Indian Ross Sea Vostok Station ENVELOPE(106.837,106.837,-78.464,-78.464) Weddell Weddell Sea International Journal of Climatology 43 2 996 1015 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract This study presents different characteristics of precipitation and synoptic‐scale circulation associated with extreme precipitation events in inland and coastal Antarctica. The focus is on two stations, inland Vostok and coastal Casey. We use observed daily precipitation data from years 2004–2017 to investigate and compare the statistics on precipitation at both stations. The key areas for synoptic features favouring extreme precipitation are identified on the basis of air‐mass backward trajectories, computed applying the Lagrangian HYSPLIT model. The air moisture accounting for high‐precipitation events originates from the ocean but in many (some) cases the trajectories cover long distances over the ice sheet before reaching Vostok (Casey). Multiple statistical methods including composite analysis, empirical orthogonal functions (EOF), and self‐organizing maps (SOMs) are used to examine the full view of synoptic patterns. At Vostok in the inland high plateau, ERA‐Interim reanalysis shows that the synoptic patterns governing the extreme precipitation events are relatively complicated. Amplified planetary waves allow water vapour to reach the Vostok Station from different source regions, including the Weddell Sea, Ross Sea, and the Indian Ocean off the Amery Ice Shelf. A dipole structure of negative height anomalies to the west and positive ones to the east of the station is identified as the cause of southward water vapour transport and resulting precipitation at Casey in coastal Antarctica. |
author2 |
National Natural Science Foundation of China Basic and Applied Basic Research Foundation of Guangdong Province |
format |
Article in Journal/Newspaper |
author |
Yang, Ran Yu, Lejiang Jagovkina, Svetlana Liang, Kaixin Yang, Qinghua |
spellingShingle |
Yang, Ran Yu, Lejiang Jagovkina, Svetlana Liang, Kaixin Yang, Qinghua Comparison of features of extreme precipitation between stations in inland and coastal Antarctica |
author_facet |
Yang, Ran Yu, Lejiang Jagovkina, Svetlana Liang, Kaixin Yang, Qinghua |
author_sort |
Yang, Ran |
title |
Comparison of features of extreme precipitation between stations in inland and coastal Antarctica |
title_short |
Comparison of features of extreme precipitation between stations in inland and coastal Antarctica |
title_full |
Comparison of features of extreme precipitation between stations in inland and coastal Antarctica |
title_fullStr |
Comparison of features of extreme precipitation between stations in inland and coastal Antarctica |
title_full_unstemmed |
Comparison of features of extreme precipitation between stations in inland and coastal Antarctica |
title_sort |
comparison of features of extreme precipitation between stations in inland and coastal antarctica |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1002/joc.7856 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7856 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.7856 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7856 |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(71.000,71.000,-69.750,-69.750) ENVELOPE(106.837,106.837,-78.464,-78.464) |
geographic |
Amery Amery Ice Shelf Indian Ross Sea Vostok Station Weddell Weddell Sea |
geographic_facet |
Amery Amery Ice Shelf Indian Ross Sea Vostok Station Weddell Weddell Sea |
genre |
Amery Ice Shelf Antarc* Antarctica Ice Sheet Ice Shelf Ross Sea Weddell Sea |
genre_facet |
Amery Ice Shelf Antarc* Antarctica Ice Sheet Ice Shelf Ross Sea Weddell Sea |
op_source |
International Journal of Climatology volume 43, issue 2, page 996-1015 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.7856 |
container_title |
International Journal of Climatology |
container_volume |
43 |
container_issue |
2 |
container_start_page |
996 |
op_container_end_page |
1015 |
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1800744362246668288 |