Atmospheric circulation regime causing winter temperature whiplash events in North China
Abstract Temperature whiplash events, which are characterized by a rapid transition between persistent and extreme warm and cold conditions, usually damage natural systems and human communities and can even have catastrophic impacts. To more deeply understand the severe winter temperature whiplash e...
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crwiley:10.1002/joc.6706 2024-09-09T19:49:36+00:00 Atmospheric circulation regime causing winter temperature whiplash events in North China Ma, Shuangmei Zhu, Congwen National Natural Science Foundation of China 2020 http://dx.doi.org/10.1002/joc.6706 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.6706 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6706 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6706 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6706 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 41, issue 2, page 917-933 ISSN 0899-8418 1097-0088 journal-article 2020 crwiley https://doi.org/10.1002/joc.6706 2024-06-18T04:11:03Z Abstract Temperature whiplash events, which are characterized by a rapid transition between persistent and extreme warm and cold conditions, usually damage natural systems and human communities and can even have catastrophic impacts. To more deeply understand the severe winter temperature whiplash events in North China, in this study, the atmospheric circulation regime that is primarily responsible for such events is investigated based on Japanese 55‐year reanalysis data. The results show that the drastic temperature shifts during winter temperature whiplash events are closely correlated with the southeastward propagation of the dipolar anomalous temperature in the middle and lower troposphere over the Eurasian continent. The dipolar structure of the temperature signals features an initial cold anomaly over the West Siberian Plain and a warm anomaly over East Asia during negative (extremely warm to extremely cold) events and the opposite pattern during positive (extremely cold to extremely warm) events. This dipolar temperature anomaly is tightly coupled with the southeastward development of an upper‐level wave‐like anomalous circulation pattern over the Eurasian continent, which is associated with a Rossby wave originating near the Kara Sea during negative events and in northern Europe during positive events. Based on the calculation of the temperature budget, the drastic temperature drop during negative events is mainly dominated by anomalous meridional temperature advection, and adiabatic heating due to vertical motion is negligible. In contrast, adiabatic heating due to sinking plays a dominant role in the drastic temperature increase during positive events, while anomalous meridional temperature advection also makes a substantial contribution to the temperature increase. Article in Journal/Newspaper Kara Sea Wiley Online Library Kara Sea International Journal of Climatology 41 2 917 933 |
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English |
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Abstract Temperature whiplash events, which are characterized by a rapid transition between persistent and extreme warm and cold conditions, usually damage natural systems and human communities and can even have catastrophic impacts. To more deeply understand the severe winter temperature whiplash events in North China, in this study, the atmospheric circulation regime that is primarily responsible for such events is investigated based on Japanese 55‐year reanalysis data. The results show that the drastic temperature shifts during winter temperature whiplash events are closely correlated with the southeastward propagation of the dipolar anomalous temperature in the middle and lower troposphere over the Eurasian continent. The dipolar structure of the temperature signals features an initial cold anomaly over the West Siberian Plain and a warm anomaly over East Asia during negative (extremely warm to extremely cold) events and the opposite pattern during positive (extremely cold to extremely warm) events. This dipolar temperature anomaly is tightly coupled with the southeastward development of an upper‐level wave‐like anomalous circulation pattern over the Eurasian continent, which is associated with a Rossby wave originating near the Kara Sea during negative events and in northern Europe during positive events. Based on the calculation of the temperature budget, the drastic temperature drop during negative events is mainly dominated by anomalous meridional temperature advection, and adiabatic heating due to vertical motion is negligible. In contrast, adiabatic heating due to sinking plays a dominant role in the drastic temperature increase during positive events, while anomalous meridional temperature advection also makes a substantial contribution to the temperature increase. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Ma, Shuangmei Zhu, Congwen |
spellingShingle |
Ma, Shuangmei Zhu, Congwen Atmospheric circulation regime causing winter temperature whiplash events in North China |
author_facet |
Ma, Shuangmei Zhu, Congwen |
author_sort |
Ma, Shuangmei |
title |
Atmospheric circulation regime causing winter temperature whiplash events in North China |
title_short |
Atmospheric circulation regime causing winter temperature whiplash events in North China |
title_full |
Atmospheric circulation regime causing winter temperature whiplash events in North China |
title_fullStr |
Atmospheric circulation regime causing winter temperature whiplash events in North China |
title_full_unstemmed |
Atmospheric circulation regime causing winter temperature whiplash events in North China |
title_sort |
atmospheric circulation regime causing winter temperature whiplash events in north china |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/joc.6706 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.6706 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6706 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6706 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6706 |
geographic |
Kara Sea |
geographic_facet |
Kara Sea |
genre |
Kara Sea |
genre_facet |
Kara Sea |
op_source |
International Journal of Climatology volume 41, issue 2, page 917-933 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.6706 |
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International Journal of Climatology |
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41 |
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2 |
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917 |
op_container_end_page |
933 |
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1809919022664253440 |