2020/21 record-breaking cold waves in east of China enhanced by the ‘Warm Arctic-Cold Siberia’ pattern
Extreme cold waves frequently occur in east of China that dramatically endanger ecological agriculture, power infrastructure and human life. In this study, we found that the 'Warm Arctic-Cold Siberia' pattern (WACS) significantly enhanced cold waves in east of China according to daily comp...
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Online Access: | https://hdl.handle.net/11250/2979313 https://doi.org/10.1088/1748-9326/ac1f46 |
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ftunivbergen:oai:bora.uib.no:11250/2979313 2023-05-15T14:50:28+02:00 2020/21 record-breaking cold waves in east of China enhanced by the ‘Warm Arctic-Cold Siberia’ pattern Zhang, Yijia Yin, Zhicong Wang, Huijun He, Shengping 2021 application/pdf https://hdl.handle.net/11250/2979313 https://doi.org/10.1088/1748-9326/ac1f46 eng eng IOP Publishing urn:issn:1748-9326 https://hdl.handle.net/11250/2979313 https://doi.org/10.1088/1748-9326/ac1f46 cristin:1939022 Environmental Research Letters. 2021, 16 (9), 094040. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2021 The Author(s) 094040 Environmental Research Letters 16 9 Journal article Peer reviewed 2021 ftunivbergen https://doi.org/10.1088/1748-9326/ac1f46 2023-03-14T17:44:21Z Extreme cold waves frequently occur in east of China that dramatically endanger ecological agriculture, power infrastructure and human life. In this study, we found that the 'Warm Arctic-Cold Siberia' pattern (WACS) significantly enhanced cold waves in east of China according to daily composites from 1979 to 2018. During the winter 2020/21, a record-breaking cold wave broke out following a noticeable WACS phenomenon and induced the record-low surface air temperature at 60 meteorological stations since they were established (nearly 60 years). On 3 January 2021, the difference in temperature anomaly between the Barents–Kara Sea and Siberia reached 20 °C, the peak of winter 2020/21. With a shrinking meridional temperature gradient, the atmospheric baroclinicity weakened correspondingly. The accompanying atmospheric anomalies, i.e. the persistent Ural Blocking High and Baikal deep trough effectively transported stronger cold air than the sole impact from Arctic warming. After 4 d, the east of China experienced a severe surface air temperature decrease of more than 8 °C, covering an area of 2500 000 km2. During the same winter, a record-breaking warm event occurred in February 2021, and the 'Cold Arctic-Warm Eurasia' pattern also appeared as a precursory signal. Furthermore, on the interannual scale, the connection between winter-mean temperature anomalies in east of China and the WACS pattern also existed and even performed more strongly in both observations and simulation data of CMIP6. publishedVersion Article in Journal/Newspaper Arctic Kara Sea Siberia University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Kara Sea Environmental Research Letters 16 9 094040 |
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Open Polar |
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University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
language |
English |
description |
Extreme cold waves frequently occur in east of China that dramatically endanger ecological agriculture, power infrastructure and human life. In this study, we found that the 'Warm Arctic-Cold Siberia' pattern (WACS) significantly enhanced cold waves in east of China according to daily composites from 1979 to 2018. During the winter 2020/21, a record-breaking cold wave broke out following a noticeable WACS phenomenon and induced the record-low surface air temperature at 60 meteorological stations since they were established (nearly 60 years). On 3 January 2021, the difference in temperature anomaly between the Barents–Kara Sea and Siberia reached 20 °C, the peak of winter 2020/21. With a shrinking meridional temperature gradient, the atmospheric baroclinicity weakened correspondingly. The accompanying atmospheric anomalies, i.e. the persistent Ural Blocking High and Baikal deep trough effectively transported stronger cold air than the sole impact from Arctic warming. After 4 d, the east of China experienced a severe surface air temperature decrease of more than 8 °C, covering an area of 2500 000 km2. During the same winter, a record-breaking warm event occurred in February 2021, and the 'Cold Arctic-Warm Eurasia' pattern also appeared as a precursory signal. Furthermore, on the interannual scale, the connection between winter-mean temperature anomalies in east of China and the WACS pattern also existed and even performed more strongly in both observations and simulation data of CMIP6. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Zhang, Yijia Yin, Zhicong Wang, Huijun He, Shengping |
spellingShingle |
Zhang, Yijia Yin, Zhicong Wang, Huijun He, Shengping 2020/21 record-breaking cold waves in east of China enhanced by the ‘Warm Arctic-Cold Siberia’ pattern |
author_facet |
Zhang, Yijia Yin, Zhicong Wang, Huijun He, Shengping |
author_sort |
Zhang, Yijia |
title |
2020/21 record-breaking cold waves in east of China enhanced by the ‘Warm Arctic-Cold Siberia’ pattern |
title_short |
2020/21 record-breaking cold waves in east of China enhanced by the ‘Warm Arctic-Cold Siberia’ pattern |
title_full |
2020/21 record-breaking cold waves in east of China enhanced by the ‘Warm Arctic-Cold Siberia’ pattern |
title_fullStr |
2020/21 record-breaking cold waves in east of China enhanced by the ‘Warm Arctic-Cold Siberia’ pattern |
title_full_unstemmed |
2020/21 record-breaking cold waves in east of China enhanced by the ‘Warm Arctic-Cold Siberia’ pattern |
title_sort |
2020/21 record-breaking cold waves in east of china enhanced by the ‘warm arctic-cold siberia’ pattern |
publisher |
IOP Publishing |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2979313 https://doi.org/10.1088/1748-9326/ac1f46 |
geographic |
Arctic Kara Sea |
geographic_facet |
Arctic Kara Sea |
genre |
Arctic Kara Sea Siberia |
genre_facet |
Arctic Kara Sea Siberia |
op_source |
094040 Environmental Research Letters 16 9 |
op_relation |
urn:issn:1748-9326 https://hdl.handle.net/11250/2979313 https://doi.org/10.1088/1748-9326/ac1f46 cristin:1939022 Environmental Research Letters. 2021, 16 (9), 094040. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1088/1748-9326/ac1f46 |
container_title |
Environmental Research Letters |
container_volume |
16 |
container_issue |
9 |
container_start_page |
094040 |
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1766321495303258112 |