干旱区生态环境知识资源中心(Arid): Isotopic composition of precipitation over Arid Northwestern China and its implications for the water vapor origin

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	Isotopic composition of precipitation over Arid Northwestern China and its implications for the water vapor origin
其他题名	西北干旱地区大气降水delta~(18)O的特征及水汽来源
	Liu JR(柳鉴容); Song XF(宋献方); Sun XM(孙晓敏); Yuan GF(袁国富); Liu X(刘鑫); Wang SQ(王仕琴)
来源期刊	Journal of Geographical Sciences
ISSN	1009-637X
出版年	2009
卷号	19 期号:2 页码:164-174
英文摘要	In order to reveal the characteristics and climatic controls on the stable isotopic composition of precipitation over Arid Northwestern China, eight stations have been selected from Chinese Network of Isotopes in Precipitation (CHNIP). During the year 2005 and 2006, monthly precipitation samples have been collected and analyzed for the composition of deltaD and delta~(18)O. The established local meteoric water line deltaD=7.42 delta~(18)O+1.38, based on the 95 obtained monthly composite samples, could be treated as isotopic input function across the region. The deviations of slope and intercept from the Global Meteoric Water Line indicated the specific regional meteorological conditions. The monthly delta~(18)O values were characterized by a positive correlation with surface air temperature (delta~(18)O () =0.33 T (℃)-13.12). The amount effect visualized during summer period (delta~(18)O () = -0.04P (mm)-3.44) though not appeared at a whole yearly-scale. Spatial distributions of delta~(18)O have properly portrayed the atmospheric circulation background in each month over Arid Northwestern China. The quantitative simulation of delta~(18)O, which involved a Rayleigh fractionation and a kinetic fractionation, demonstrated that the latter one was the dominating function of condensation of raindrops. Furthermore, the raindrop suffered a re-evaporation during falling processes, and the precipitation vapor might have been mixed with a quantity of local recycled water vapor. Multiple linear regression equations and a delta~(18)O-T relation have been gained by using meteorological parameters and delta~(18)O data to evaluate physical controls on the long-term data. The established delta~(18)O-T relation, which has been based on the present-day precipitation, could be considered as a first step of quantitatively reconstructing the historical environmental climate.
英文关键词	Arid Northwestern China (ANC) delta~(18)O precipitation water vapor origin
类型	Article
语种	英语
收录类别	CSCD
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:3521672
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334994
作者单位	柳鉴容, Beijing 100101, China.; 宋献方, Beijing 100101, China.; 孙晓敏, Beijing 100101, China.; 袁国富, Beijing 100101, China.; 刘鑫, Beijing 100101, China.; 王仕琴, Beijing 100101, China.
推荐引用方式 GB/T 7714	Liu JR,Song XF,Sun XM,et al. Isotopic composition of precipitation over Arid Northwestern China and its implications for the water vapor origin[J],2009,19(2):164-174.
APA	柳鉴容,宋献方,孙晓敏,袁国富,刘鑫,&王仕琴.(2009).Isotopic composition of precipitation over Arid Northwestern China and its implications for the water vapor origin.Journal of Geographical Sciences,19(2),164-174.
MLA	柳鉴容,et al."Isotopic composition of precipitation over Arid Northwestern China and its implications for the water vapor origin".Journal of Geographical Sciences 19.2(2009):164-174.