Contrast in the East Asian subtropical westerly jet and its association with precipitation in China between early summer and midsummer
ABSTRACT The interannual variations of the East Asian subtropical westerly jet ( EASWJ ) and its related precipitation and atmospheric circulations during early summer and midsummer were investigated. The possible causes for the contrast between early summer and midsummer were also investigated. The...
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crwiley:10.1002/met.1675 2024-06-02T08:11:17+00:00 Contrast in the East Asian subtropical westerly jet and its association with precipitation in China between early summer and midsummer Xuan, Shouli Zhang, Qingyun Sun, Shuqing Shi, Chunlin National Natural Science Foundation of China Science and Technology Support Program of Jiangsu Province 2017 http://dx.doi.org/10.1002/met.1675 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fmet.1675 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/met.1675 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Meteorological Applications volume 25, issue 1, page 119-127 ISSN 1350-4827 1469-8080 journal-article 2017 crwiley https://doi.org/10.1002/met.1675 2024-05-03T12:05:27Z ABSTRACT The interannual variations of the East Asian subtropical westerly jet ( EASWJ ) and its related precipitation and atmospheric circulations during early summer and midsummer were investigated. The possible causes for the contrast between early summer and midsummer were also investigated. The results indicate that, in early summer, the EASWJ is influenced by a teleconnection pattern spanning the middle to high latitude region from the North Atlantic to the East Asian coast. Associated with the eastward pointing wave activity flux ( WAF ) along this zonal propagated wave train, the height anomaly in the middle to high latitude of East Asia exhibits alternating negative−positive−negative distributions in abnormal southward EASWJ years, resulting in anomalous convergence and increased precipitation in regions south of the Yangtze River ( SYR ). However, in midsummer, the EASWJ is more closely related to lower latitude circulations. A south‐to‐north propagated WAF , which originates from the South China Sea and tropical western Pacific, is responsible for the maintenance of the anomalous EASWJ and western Pacific subtropical high. Associated with the stronger and westward shifted western Pacific subtropical high and abnormal southward EASWJ , precipitation increases in the Yangtze‐Huaihe River Valley and decreases SYR , and vice versa . Contrast in the EASWJ‐related preceding sea surface temperature (SST) between early summer and midsummer were also investigated. In early summer, the meridional displacement of the EASWJ was significantly influenced by the North Atlantic SST in the preceding March–April period, whereas in midsummer the EASWJ displacement was strongly connected to the tropical Pacific SST in the preceding April–June period. Article in Journal/Newspaper North Atlantic Wiley Online Library Pacific Meteorological Applications 25 1 119 127 |
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Wiley Online Library |
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English |
description |
ABSTRACT The interannual variations of the East Asian subtropical westerly jet ( EASWJ ) and its related precipitation and atmospheric circulations during early summer and midsummer were investigated. The possible causes for the contrast between early summer and midsummer were also investigated. The results indicate that, in early summer, the EASWJ is influenced by a teleconnection pattern spanning the middle to high latitude region from the North Atlantic to the East Asian coast. Associated with the eastward pointing wave activity flux ( WAF ) along this zonal propagated wave train, the height anomaly in the middle to high latitude of East Asia exhibits alternating negative−positive−negative distributions in abnormal southward EASWJ years, resulting in anomalous convergence and increased precipitation in regions south of the Yangtze River ( SYR ). However, in midsummer, the EASWJ is more closely related to lower latitude circulations. A south‐to‐north propagated WAF , which originates from the South China Sea and tropical western Pacific, is responsible for the maintenance of the anomalous EASWJ and western Pacific subtropical high. Associated with the stronger and westward shifted western Pacific subtropical high and abnormal southward EASWJ , precipitation increases in the Yangtze‐Huaihe River Valley and decreases SYR , and vice versa . Contrast in the EASWJ‐related preceding sea surface temperature (SST) between early summer and midsummer were also investigated. In early summer, the meridional displacement of the EASWJ was significantly influenced by the North Atlantic SST in the preceding March–April period, whereas in midsummer the EASWJ displacement was strongly connected to the tropical Pacific SST in the preceding April–June period. |
author2 |
National Natural Science Foundation of China Science and Technology Support Program of Jiangsu Province |
format |
Article in Journal/Newspaper |
author |
Xuan, Shouli Zhang, Qingyun Sun, Shuqing Shi, Chunlin |
spellingShingle |
Xuan, Shouli Zhang, Qingyun Sun, Shuqing Shi, Chunlin Contrast in the East Asian subtropical westerly jet and its association with precipitation in China between early summer and midsummer |
author_facet |
Xuan, Shouli Zhang, Qingyun Sun, Shuqing Shi, Chunlin |
author_sort |
Xuan, Shouli |
title |
Contrast in the East Asian subtropical westerly jet and its association with precipitation in China between early summer and midsummer |
title_short |
Contrast in the East Asian subtropical westerly jet and its association with precipitation in China between early summer and midsummer |
title_full |
Contrast in the East Asian subtropical westerly jet and its association with precipitation in China between early summer and midsummer |
title_fullStr |
Contrast in the East Asian subtropical westerly jet and its association with precipitation in China between early summer and midsummer |
title_full_unstemmed |
Contrast in the East Asian subtropical westerly jet and its association with precipitation in China between early summer and midsummer |
title_sort |
contrast in the east asian subtropical westerly jet and its association with precipitation in china between early summer and midsummer |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1002/met.1675 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fmet.1675 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/met.1675 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Meteorological Applications volume 25, issue 1, page 119-127 ISSN 1350-4827 1469-8080 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/met.1675 |
container_title |
Meteorological Applications |
container_volume |
25 |
container_issue |
1 |
container_start_page |
119 |
op_container_end_page |
127 |
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1800757368841043968 |