Arid
DOI10.1007/s11442-009-0164-3
Isotopic composition of precipitation over Arid Northwestern China and its implications for the water vapor origin
Liu Jianrong1,2; Song Xianfang1; Sun Xiaomin3; Yuan Guofu3; Liu Xin1,2; Wang Shiqin1,2
通讯作者Song Xianfang
来源期刊JOURNAL OF GEOGRAPHICAL SCIENCES
ISSN1009-637X
EISSN1861-9568
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 delta D and delta O-18. The established local meteoric water line delta D=7.42 delta O-18+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 O-18 values were characterized by a positive correlation with surface air temperature (delta O-18 (aEuro degrees) =0.33 T (A degrees C)-13.12). The amount effect visualized during summer period (delta O-18 (aEuro degrees) = -0.04P (mm)-3.44) though not appeared at a whole yearly-scale. Spatial distributions of delta O-18 have properly portrayed the atmospheric circulation background in each month over Arid Northwestern China. The quantitative simulation of delta O-18, 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 O-18-T relation have been gained by using meteorological parameters and delta O-18 data to evaluate physical controls on the long-term data. The established delta O-18-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 O-18 precipitation water vapor origin
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000264923300004
WOS关键词ICE CORES ; POTATO
WOS类目Geography, Physical
WOS研究方向Physical Geography
来源机构中国科学院地理科学与资源研究所
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/161538
作者单位1.CAS, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China;
2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China;
3.CERN, Sub Ctr Water, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714
Liu Jianrong,Song Xianfang,Sun Xiaomin,et al. Isotopic composition of precipitation over Arid Northwestern China and its implications for the water vapor origin[J]. 中国科学院地理科学与资源研究所,2009,19(2):164-174.
APA Liu Jianrong,Song Xianfang,Sun Xiaomin,Yuan Guofu,Liu Xin,&Wang Shiqin.(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 Liu Jianrong,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.
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