Spatiotemporal Pattern of Occurrence Time of Extreme Precipitation and Circulation Mechanisms in the Arid Region of Northwest China
Investigation of extreme precipitation events in arid and semiarid regions, especially for occurrence time and the associated circulation mechanisms, is vital to support the forecasting of and the advanced response to resultant disasters. In this study, the spatiotemporal pattern of occurrence time...
Published in: | Frontiers in Earth Science |
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Online Access: | http://dx.doi.org/10.3389/feart.2022.931916 https://www.frontiersin.org/articles/10.3389/feart.2022.931916/full |
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crfrontiers:10.3389/feart.2022.931916 2024-02-11T10:00:44+01:00 Spatiotemporal Pattern of Occurrence Time of Extreme Precipitation and Circulation Mechanisms in the Arid Region of Northwest China Sun, Wenxuan Jiang, Youyan Chen, Jizu Du, Wentao Lian, Lishu Song, Linlin Hu, Yuling Cheng, Zhen Zhou, Xiyin Kang, Shichang Wu, Jichun National Natural Science Foundation of China West Light Foundation of the Chinese Academy of Sciences 2022 http://dx.doi.org/10.3389/feart.2022.931916 https://www.frontiersin.org/articles/10.3389/feart.2022.931916/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Earth Science volume 10 ISSN 2296-6463 General Earth and Planetary Sciences journal-article 2022 crfrontiers https://doi.org/10.3389/feart.2022.931916 2024-01-26T10:02:53Z Investigation of extreme precipitation events in arid and semiarid regions, especially for occurrence time and the associated circulation mechanisms, is vital to support the forecasting of and the advanced response to resultant disasters. In this study, the spatiotemporal pattern of occurrence time of extreme precipitation and atmospheric circulation mechanisms in the Arid Region of Northwest China (ARNC) were analyzed using two indicators (precipitation concentration degree and period) and the climate diagnosis method. Results showed that the significant scattered pattern of extreme precipitation occurrence time (EPOT) in Northern Xinjiang and the postponed pattern of maximum extreme precipitation occurrence (MEPO) from southern to northern Xinjiang are consistent with the input pathway of the Arctic air mass. During the anomaly dispersion year of EPOT and the anomaly delay year of MEPO, the Arctic air mass carried sufficient water vapor is transported to ARNC for triggering extreme precipitation events. Meanwhile, the pattern of concentration–dispersion–concentration in eastern ARNC demonstrates interaction between the westerlies and the summer monsoon. Sufficient water vapor is transported to southwestern ARNC by the southwest monsoon during the anomaly delay year of MEPO and the anomaly concentration year of EPOT. The findings of this study suggest that invasion of the Arctic air mass and the summer monsoon could influence extreme precipitation in ARNC. Article in Journal/Newspaper Arctic Frontiers (Publisher) Arctic Frontiers in Earth Science 10 |
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Frontiers (Publisher) |
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topic |
General Earth and Planetary Sciences |
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General Earth and Planetary Sciences Sun, Wenxuan Jiang, Youyan Chen, Jizu Du, Wentao Lian, Lishu Song, Linlin Hu, Yuling Cheng, Zhen Zhou, Xiyin Kang, Shichang Wu, Jichun Spatiotemporal Pattern of Occurrence Time of Extreme Precipitation and Circulation Mechanisms in the Arid Region of Northwest China |
topic_facet |
General Earth and Planetary Sciences |
description |
Investigation of extreme precipitation events in arid and semiarid regions, especially for occurrence time and the associated circulation mechanisms, is vital to support the forecasting of and the advanced response to resultant disasters. In this study, the spatiotemporal pattern of occurrence time of extreme precipitation and atmospheric circulation mechanisms in the Arid Region of Northwest China (ARNC) were analyzed using two indicators (precipitation concentration degree and period) and the climate diagnosis method. Results showed that the significant scattered pattern of extreme precipitation occurrence time (EPOT) in Northern Xinjiang and the postponed pattern of maximum extreme precipitation occurrence (MEPO) from southern to northern Xinjiang are consistent with the input pathway of the Arctic air mass. During the anomaly dispersion year of EPOT and the anomaly delay year of MEPO, the Arctic air mass carried sufficient water vapor is transported to ARNC for triggering extreme precipitation events. Meanwhile, the pattern of concentration–dispersion–concentration in eastern ARNC demonstrates interaction between the westerlies and the summer monsoon. Sufficient water vapor is transported to southwestern ARNC by the southwest monsoon during the anomaly delay year of MEPO and the anomaly concentration year of EPOT. The findings of this study suggest that invasion of the Arctic air mass and the summer monsoon could influence extreme precipitation in ARNC. |
author2 |
National Natural Science Foundation of China West Light Foundation of the Chinese Academy of Sciences |
format |
Article in Journal/Newspaper |
author |
Sun, Wenxuan Jiang, Youyan Chen, Jizu Du, Wentao Lian, Lishu Song, Linlin Hu, Yuling Cheng, Zhen Zhou, Xiyin Kang, Shichang Wu, Jichun |
author_facet |
Sun, Wenxuan Jiang, Youyan Chen, Jizu Du, Wentao Lian, Lishu Song, Linlin Hu, Yuling Cheng, Zhen Zhou, Xiyin Kang, Shichang Wu, Jichun |
author_sort |
Sun, Wenxuan |
title |
Spatiotemporal Pattern of Occurrence Time of Extreme Precipitation and Circulation Mechanisms in the Arid Region of Northwest China |
title_short |
Spatiotemporal Pattern of Occurrence Time of Extreme Precipitation and Circulation Mechanisms in the Arid Region of Northwest China |
title_full |
Spatiotemporal Pattern of Occurrence Time of Extreme Precipitation and Circulation Mechanisms in the Arid Region of Northwest China |
title_fullStr |
Spatiotemporal Pattern of Occurrence Time of Extreme Precipitation and Circulation Mechanisms in the Arid Region of Northwest China |
title_full_unstemmed |
Spatiotemporal Pattern of Occurrence Time of Extreme Precipitation and Circulation Mechanisms in the Arid Region of Northwest China |
title_sort |
spatiotemporal pattern of occurrence time of extreme precipitation and circulation mechanisms in the arid region of northwest china |
publisher |
Frontiers Media SA |
publishDate |
2022 |
url |
http://dx.doi.org/10.3389/feart.2022.931916 https://www.frontiersin.org/articles/10.3389/feart.2022.931916/full |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Frontiers in Earth Science volume 10 ISSN 2296-6463 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/feart.2022.931916 |
container_title |
Frontiers in Earth Science |
container_volume |
10 |
_version_ |
1790596451966910464 |