气候变化领域集成服务门户(CCPortal): Moisture sources of extreme precipitation events in arid Central Asia and their relationship with atmospheric circulation

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DOI	10.1002/joc.6683
	Moisture sources of extreme precipitation events in arid Central Asia and their relationship with atmospheric circulation
	Xie, Tingting; Huang, Wei; Chang, Shiqiao; Zheng, Fei; Chen, Jianhui; Chen, Jie; 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	E271
结束页码	E282
卷号	41
英文摘要	Although moisture is an important factor affecting precipitation in arid Central Asia (ACA), the water vapour sources and their influencing factors are unclear. This study investigates the moisture sources of extreme precipitation events in summer over Northern ACA and in winter over Southern ACA. The results show that in summer over Northern ACA, the water vapour at low and upper atmospheric levels is mainly transported from the North Atlantic and the Arctic Ocean. In addition, the water vapour in winter over Southern ACA is mainly transported from the North Atlantic and the Northern Indian Ocean. Among these sources, anomalous moisture from the North Atlantic is transported to Northern and Southern ACA along the Mediterranean pressure ridge and the Aral Sea pressure trough. In addition, anomalous moisture in Northern ACA from the Arctic Ocean is closely associated with the negative height anomaly near ACA and with the positive height anomaly in the Mediterranean extending northward to the Arctic Ocean; this results in the high-latitude moisture transporting along the western edge of the cyclone in Northern ACA. In Southern ACA, low-latitude water vapour from the Northern Indian Ocean is affected by negative and positive height anomalies in Northwest and Southeast ACA. In addition, significant ascending motion occurs in the study area which provides the necessary dynamic conditions for precipitation. The precipitation variations in Northern and Southern ACA are also related to sea-surface temperature variations, mainly in the North Atlantic, Arctic Ocean, Mediterranean Sea, and Northern Indian Ocean. Therefore, moisture from the North Atlantic, Arctic Ocean, and the Indian Ocean converge and together influence precipitation development during summer over Northern ACA and in winter over Southern ACA.
关键词	CLIMATE DESERTIFICATION EUROPE ENSO
英文关键词	arid Central Asia; atmospheric circulation; extreme precipitation; water vapour sources
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000543932800001
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/260253
推荐引用方式 GB/T 7714	Xie, Tingting,Huang, Wei,Chang, Shiqiao,et al. Moisture sources of extreme precipitation events in arid Central Asia and their relationship with atmospheric circulation[J]. 中国科学院青藏高原研究所,2021,41.
APA	Xie, Tingting.,Huang, Wei.,Chang, Shiqiao.,Zheng, Fei.,Chen, Jianhui.,...&Chen, Fahu.(2021).Moisture sources of extreme precipitation events in arid Central Asia and their relationship with atmospheric circulation.INTERNATIONAL JOURNAL OF CLIMATOLOGY,41.
MLA	Xie, Tingting,et al."Moisture sources of extreme precipitation events in arid Central Asia and their relationship with atmospheric circulation".INTERNATIONAL JOURNAL OF CLIMATOLOGY 41(2021).