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DOI	10.1175/JCLI-D-22-0121.1
	Distinct Orographic Controls on the Asymmetrical Onset of the South Asian Summer Monsoon: Hindu Kush versus Himalaya-Tibet
	Sha, Yingying; Shi, Zhengguo; Li, Xinzhou; Cheng, Hai; Liu, Xiaodong; An, Zhisheng
发表日期	2023
ISSN	0894-8755
EISSN	1520-0442
起始页码	6649
结束页码	6667
卷号	36 期号:19
英文摘要	The relative impacts of the Tibetan Plateau-Himalaya (TPH) and the adjacent narrow mountains on the South Asian summer monsoon (SASM) are still unclear. We used a general circulation model to evaluate the relative ef-fects of the TPH, the Hindu Kush Mountains (HKM), and the Iranian Plateau on the SASM from the perspective of the asymmetrical onset of the Bay of Bengal (BOB) summer monsoon (BOBSM) and the Indian summer monsoon (ISM). The results show that the abrupt onset of the BOBSM in May is affected by the TPH and HKM, which significantly strengthen precipitation over the BOB. By contrast, precipitation over the Indian subcontinent is suppressed by the TPH. In June, the TPH and the HKM contribute to strengthening and expanding precipitation over the Indian sub-continent and the ISM is significantly intensified. The strengthening of the SASM onset induced by the HKM is com-parable with, or even larger than, that induced by the TPH. The effect of the Iranian Plateau on the SASM is much weaker and localized. The distinct role of the HKM is caused by the appearance of an anomalous low-level cyclone around the HKM and an anticyclone to the south, strengthening the India-Burma trough and the Somali jet. The to-pographic control of the HKM depends on the pre-existence of the TPH. We show that the sensible heat from the HKM accounts for 78.6% and 31.6% of the HKM-induced increase in precipitation during the onset of the BOBSM and ISM, respectively.
关键词	Asia Subtropics Tropics Monsoons Orographic effects Sensitivity studies
英文关键词	INDIAN MONSOON; GENERAL-CIRCULATION; CLIMATE SIMULATIONS; YUNNAN-GUIZHOU; PLATEAU; EVOLUTION; UPLIFT; PRECIPITATION; SENSITIVITY; TOPOGRAPHY
WOS研究方向	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001065632100001
来源期刊	JOURNAL OF CLIMATE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283487
作者单位	Chinese Academy of Sciences; Institute of Earth Environment, CAS; Xi'an Jiaotong University
推荐引用方式 GB/T 7714	Sha, Yingying,Shi, Zhengguo,Li, Xinzhou,et al. Distinct Orographic Controls on the Asymmetrical Onset of the South Asian Summer Monsoon: Hindu Kush versus Himalaya-Tibet[J],2023,36(19).
APA	Sha, Yingying,Shi, Zhengguo,Li, Xinzhou,Cheng, Hai,Liu, Xiaodong,&An, Zhisheng.(2023).Distinct Orographic Controls on the Asymmetrical Onset of the South Asian Summer Monsoon: Hindu Kush versus Himalaya-Tibet.JOURNAL OF CLIMATE,36(19).
MLA	Sha, Yingying,et al."Distinct Orographic Controls on the Asymmetrical Onset of the South Asian Summer Monsoon: Hindu Kush versus Himalaya-Tibet".JOURNAL OF CLIMATE 36.19(2023).