干旱区生态环境知识资源中心(Arid): Spatial distribution, temporal variation, and transport characteristics of atmospheric water vapor over Central Asia and the arid region of China

Arid

DOI	10.1016/j.gloplacha.2018.06.007
	Spatial distribution, temporal variation, and transport characteristics of atmospheric water vapor over Central Asia and the arid region of China
	Guan, Xuefeng 1,2; Yang, Lianmei 1,2; Zhang, Yingxin 3; Li, Jiangang 1,2
通讯作者	Yang, Lianmei
来源期刊	GLOBAL AND PLANETARY CHANGE
ISSN	0921-8181
EISSN	1872-6364
出版年	2019
卷号	172 页码:159-178
英文摘要	This study evaluated the spatial distribution, seasonal/annual variability, and transport characteristics of water vapor over CA-AC during the period 1979-2012, based on ERA-Interim reanalysis data. (1) Located in a low-moisture area of the mid- to low latitudes, CA-AC has a richer water vapor in the south and west, and the plain area than that in the north and east, and the mountainous regions. A decreasing trend of annual average precipitable water-vapor content (PWC) was detected during 1979-2012, which could be attributed to the decrease of PWC in winter. There is no obvious interannual and interdecadal variation of annual CA-AC PWC but the seasonal mean PWC have interannual variability at different time scales.(2) Water vapor in CA-AC is derived primarily from the Mediterranean, Black, and Caspian seas in spring, autumn, and winter, but from the Atlantic Ocean and high latitudes of the European continent in summer. (3) Most of Central Asia is characterized by water vapor divergence in spring and summer and by water vapor convergence in winter. Water vapor converges throughout the year in Kyrgyzstan and Tajikistan in Central Asia and in northern Xinjiang in the arid region of China. Perennial water vapor divergence, however, occurs in southern Xinjiang and in the Badain Jaran and Tengger deserts. (4) Water vapor transport for the five studied countries of Central Asia is mainly via input along the western and southern boundaries and output along the southern and eastern boundaries. In the arid region of China, water vapor transport is mainly via input along the western and northern boundaries and output along the eastern boundary. (5) Water vapor flux was positive in Central Asia but negative in the arid region of China during 1979-2012. The net water vapor flux of CA-AC was found to decrease in spring, increase in winter, and remain largely constant in autumn and summer. (6) Westerly Wind Index can act as an indicative role for water vapor transport in CA-AC. In years with larger Westerly Wind Index, the zonal circulation will be strong enough to bring more water vapor reaching the middle and east part of CA and the AC. More water vapor will be transported to the western part of CA with smaller Westerly Wind Index, while water vapor influx decreases remarkably over the AC because of the intensified longitudinal water vapor transport.
英文关键词	Water vapor Precipitable water vapor content (PWC) Water vapor transfer Convergence and divergence Central Asia Arid region of China Westerly wind index
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000456222800013
WOS关键词	CLIMATE-CHANGE ; PRECIPITATION ; VARIABILITY ; TROPOSPHERE ; IMPACTS ; BASIN
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216062
作者单位	1.CMA, IDM, Urumqi 830002, Peoples R China; 2.Ctr Cent Asia Atmospher Sci Res, Urumqi 830002, Peoples R China; 3.Beijing Meteorol Observ, Beijing 100089, Peoples R China
推荐引用方式 GB/T 7714	Guan, Xuefeng,Yang, Lianmei,Zhang, Yingxin,et al. Spatial distribution, temporal variation, and transport characteristics of atmospheric water vapor over Central Asia and the arid region of China[J],2019,172:159-178.
APA	Guan, Xuefeng,Yang, Lianmei,Zhang, Yingxin,&Li, Jiangang.(2019).Spatial distribution, temporal variation, and transport characteristics of atmospheric water vapor over Central Asia and the arid region of China.GLOBAL AND PLANETARY CHANGE,172,159-178.
MLA	Guan, Xuefeng,et al."Spatial distribution, temporal variation, and transport characteristics of atmospheric water vapor over Central Asia and the arid region of China".GLOBAL AND PLANETARY CHANGE 172(2019):159-178.