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DOI	10.1002/joc.6903
	The modulation of westerlies-monsoon interaction on climate over the monsoon boundary zone in East Asia
	Chen, Jie; Huang, Wei; Feng, Song; Zhang, Qiong; Kuang, Xueyuan; Chen, Jianhui; Chen, Fahu
通讯作者	Huang, W (通讯作者)
发表日期	2021
ISSN	0899-8418
EISSN	1097-0088
起始页码	E3049
结束页码	E3064
卷号	41
英文摘要	Monsoon boundary zone (MBZ) is a transitional zone between the arid Central Asia (ACA) and humid Asia monsoon area, located in North China-Mongolia. During boreal summer, both the mid-latitude westerlies and East Asian Summer monsoon (EASM) play essential roles in the precipitation variations in the MBZ, via causing anomalous cold air mass from the west and warm/humid air from the south to the MBZ. In this study, we defined a summer westerly index (SWI) over the key westerly domain (35 degrees-42.5 degrees N, 80 degrees-100 degrees E) and an EASM index (EASMI) over the key EASM domain (25 degrees-35 degrees N, 107.5 degrees-125 degrees E) to investigate westerlies-monsoon interaction and their effect on MBZ climate. The results show that westerlies and EASM have a synergistic effect on the precipitation in the MBZ and this synergistic effect could be amplified by the westerlies-monsoon interaction. The westerlies and EASM interaction could induce a local cyclonic anomaly in the MBZ, this cyclonic anomaly further intensifies the westerlies and monsoon flow through a dynamical amplification, favours the precipitation in the MBZ. The MBZ precipitation also contributes to maintain the cyclonic anomaly via the latent heating release. The interannual variability of westerlies is largely modulated by the mid-latitude Silk Road pattern (SRP) and the meridional displacement of the Asian westerly jet (AWJ), and the EASM variability is mainly modulated by El Nino-Southern Oscillation (ENSO), the combined effects from these mid-latitude circulation systems and tropical SST contribute to the climate variability in MBZ.
关键词	INTERANNUAL VARIABILITY MODES HOLOCENE MOISTURE EVOLUTION ARID CENTRAL-ASIA SUMMER MONSOON MERIDIONAL DISPLACEMENT INTERDECADAL CHANGES JET-STREAM EL-NINO TELECONNECTION RAINFALL
英文关键词	interaction; mid‐ latitude westerlies; monsoon boundary zone; East Asian summer monsoon
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000586622600001
来源期刊	INTERNATIONAL JOURNAL OF CLIMATOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260457
推荐引用方式 GB/T 7714	Chen, Jie,Huang, Wei,Feng, Song,et al. The modulation of westerlies-monsoon interaction on climate over the monsoon boundary zone in East Asia[J]. 中国科学院青藏高原研究所,2021,41.
APA	Chen, Jie.,Huang, Wei.,Feng, Song.,Zhang, Qiong.,Kuang, Xueyuan.,...&Chen, Fahu.(2021).The modulation of westerlies-monsoon interaction on climate over the monsoon boundary zone in East Asia.INTERNATIONAL JOURNAL OF CLIMATOLOGY,41.
MLA	Chen, Jie,et al."The modulation of westerlies-monsoon interaction on climate over the monsoon boundary zone in East Asia".INTERNATIONAL JOURNAL OF CLIMATOLOGY 41(2021).