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  The westerly winds control the zonal migration of rainy season over the Tibetan Plateau

Jiang, X., Cai, F., Li, Z., Wang, Z., Zhang, T. (2023): The westerly winds control the zonal migration of rainy season over the Tibetan Plateau. - Communications Earth and Environment, 4, 363.
https://doi.org/10.1038/s43247-023-01035-6

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 Creators:
Jiang, Xingwen1, Author
Cai, Fenying2, Author              
Li, Zhenning1, Author
Wang, Zunya1, Author
Zhang, Tuantuan1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Potsdam Institute for Climate Impact Research, Potsdam, ou_persistent13              

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 Abstract: Precipitation over the Tibetan Plateau is modulated by both the South Asian summer monsoon and the mid-latitude westerly winds. Using observations and numerical simulations, this study highlights the out-of-phase relationships between the mid-latitude westerly wind speeds and the west-east migration of Tibetan Plateau rainy season. When the westerly jet shifts northward before July, the weakening of westerly winds over the Tibetan Plateau leads to a westward shift of low-level warm air center and a westward extension of moist air convergence. Consequently, rainy season advances westward. Conversely, the southward shift of westerly jet after August leads to a strengthening of westerly winds and an eastward retreat of rainy season. Numerical simulations confirm the dominant role of mid-latitude westerly winds on the rain belt migration over the Tibetan Plateau, and further indicate that the timing of the westward extension of rain belt is determined by the weakening of mid-latitude westerly winds.

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Language(s): eng - English
 Dates: 2023-10-092023-10-09
 Publication Status: Finally published
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/s43247-023-01035-6
MDB-ID: No data to archive
PIKDOMAIN: RD4 - Complexity Science
Organisational keyword: RD4 - Complexity Science
Research topic keyword: Monsoon
Research topic keyword: Atmosphere
Regional keyword: Asia
Model / method: Model Intercomparison
OATYPE: Gold Open Access
 Degree: -

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Title: Communications Earth and Environment
Source Genre: Journal, SCI, Scopus, oa
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Pages: - Volume / Issue: 4 Sequence Number: 363 Start / End Page: - Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/communications-earth-environment
Publisher: Nature