Westerlies Affecting the Seasonal Variation of Water Vapor Transport over the Tibetan Plateau Induced by Tropical Cyclones in the Bay of Bengal

doi:10.1007/s00376-023-3093-7

CORC > 深海科学与工程研究所 > 中国科学院深海科学与工程研究所 > 深海科学研究部 > 海洋环流观测与数值模拟研究室

	Westerlies Affecting the Seasonal Variation of Water Vapor Transport over the Tibetan Plateau Induced by Tropical Cyclones in the Bay of Bengal
	Zhou, Xiaoli 3,5,6,7; Zhou, Wen 5,6,7; Wang, Dongxiao 4; Xie, Qiang 3; Yang, Lei 2; Peng, Qihua 1
刊名	ADVANCES IN ATMOSPHERIC SCIENCES
	2024-03-21
页码	13
关键词	tropical cyclone Tibetan Plateau Bay of Bengal moisture budget westerlies
ISSN号	0256-1530
DOI	10.1007/s00376-023-3093-7
英文摘要	This study investigates the activity of tropical cyclones (TCs) in the Bay of Bengal (BOB) from 1979 to 2018 to discover the mechanism affecting the contribution rate to the meridional moisture budget anomaly (MMBA) over the southern boundary of the Tibetan Plateau (SBTP). May and October-December are the bimodal phases of BOB TC frequency, which decreases month by month from October to December and is relatively low in May. However, the contribution rate to the MMBA is the highest in May. The seasonal variation in the meridional position of the westerlies is the key factor affecting the contribution rate. The relatively southern (northern) position of the westerlies in November and December (May) results in a lower (higher) contribution rate to the MMBA. This mechanism is confirmed by the momentum equation. When water vapor enters the westerlies near the trough line, the resultant meridional acceleration is directed north. It follows that the farther north the trough is, and the farther north the water vapor can be transported. When water vapor enters the westerlies from the area near the ridge line, for Type-T (Type-R) TCs, water vapor enters the westerlies downstream of the trough (ridge). Consequently, the direction of the resultant meridional acceleration is directed south and the resultant zonal acceleration is directed east (west), which is not conducive to the northward transport of water vapor. This is especially the case if the trough or ridge is relatively south, as the water vapor may not cross the SBTP.
资助项目	National Natural Science Foundation of China[92158204] ; National Natural Science Foundation of China[42176026] ; National Natural Science Foundation of China[42005035] ; National Natural Science Foundation of China[41906181] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program[2019QZKK010201-02] ; GuangDong Basic and Applied Basic Research Foundation[2022A1515010945] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20060503] ; Science and Technology Program of Guangdong Province[2022B1212050003] ; Special fund of South China Sea Institute of Oceanology of the Chinese Academy of Sciences[SCSIO2023QY01]
WOS关键词	UPPER-TROPOSPHERIC TROUGH ; INDIAN-OCEAN ; PRECIPITATION ; MODULATION ; MONSOON ; IMPACTS
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:001188838000004
资助机构	National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; GuangDong Basic and Applied Basic Research Foundation ; Strategic Priority Research Program of Chinese Academy of Sciences ; Science and Technology Program of Guangdong Province ; Special fund of South China Sea Institute of Oceanology of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.idsse.ac.cn/handle/183446/10928]
专题	深海科学研究部_海洋环流观测与数值模拟研究室
通讯作者	Zhou, Wen; Yang, Lei
作者单位	1.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA 2.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Peoples R China 3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China 4.Sun Yat Sen Univ, Sch Marine Sci, Zhuhai 519082, Peoples R China 5.Fudan Univ, Inst Atmospher Sci, Shanghai 200438, Peoples R China 6.Fudan Univ, Dept Atmospher & Ocean Sci, Shanghai 200438, Peoples R China 7.Fudan Univ, Key Lab Polar Atmosphere Ocean Ice Syst Weather &, Minist Educ, Shanghai 200438, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Xiaoli,Zhou, Wen,Wang, Dongxiao,et al. Westerlies Affecting the Seasonal Variation of Water Vapor Transport over the Tibetan Plateau Induced by Tropical Cyclones in the Bay of Bengal[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2024:13.
APA	Zhou, Xiaoli,Zhou, Wen,Wang, Dongxiao,Xie, Qiang,Yang, Lei,&Peng, Qihua.(2024).Westerlies Affecting the Seasonal Variation of Water Vapor Transport over the Tibetan Plateau Induced by Tropical Cyclones in the Bay of Bengal.ADVANCES IN ATMOSPHERIC SCIENCES,13.
MLA	Zhou, Xiaoli,et al."Westerlies Affecting the Seasonal Variation of Water Vapor Transport over the Tibetan Plateau Induced by Tropical Cyclones in the Bay of Bengal".ADVANCES IN ATMOSPHERIC SCIENCES (2024):13.