气候变化领域集成服务门户(CCPortal): Variability of Isotope Composition of Precipitation in the Southeastern Tibetan Plateau from the Synoptic to Seasonal Time Scale

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DOI	10.1029/2019JD031751
	Variability of Isotope Composition of Precipitation in the Southeastern Tibetan Plateau from the Synoptic to Seasonal Time Scale
	Shi X.; Risi C.; Pu T.; Lacour J.-L.; Kong Y.; Wang K.; He Y.; Xia D.
发表日期	2020
ISSN	2169897X
卷号	125 期号:6
英文摘要	Daily precipitation samples were collected at four sites in Mount Yulong and Mount Meili regions of southeastern Tibetan Plateau and analyzed for isotopic composition. Combined with water vapor isotopic composition derived from satellites data (Infrared Atmospheric Sounding Interferometer, Tropospheric Emission Spectrometer, and Greenhouse gases Observing Satellite), the factors controlling the variability in the isotopic composition of precipitation are investigated at the synoptic, intraseasonal, and seasonal time scales. At the seasonal scale, the isotope composition in precipitation is controlled by processes along air mass trajectories affecting the water vapor at the large scale (>200 km), especially upstream deep convection and air mass origin, and by local processes transforming the large-scale water vapor isotopic composition into the precipitation composition, especially rain evaporation and local circulation. At the intraseasonal and synoptic scales, the isotope composition in precipitation is mainly controlled by these local processes. The shorter the time scale of isotopic variations, the smaller the spatial imprint of these variations. The fact that different factors control the isotopic variability at different time scales calls for caution when applying relationships observed at these time scales to interpret isotopic variations at paleoclimatic time scales. While general circulation models successfully capture the isotopic variability and its controlling factors at the seasonal scale, it fails to simulate them at shorter time scales, because it fails to simulate the local processes. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	isotopic modeling; precipitation isotopes; Tibetan Plateau; vapor isotopes
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186119
作者单位	MOE Key Laboratory of West China's Environmental System, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, China; Laboratoire de Météorologie Dynamique, IPSL, Sorbonne Université, Paris, France; State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-environment and Resources, Chinese Academy of Sciences, Lanzhou, China; Laboratoire de Météorologie Dynamique, IPSL, CNRS, Sorbonne Université, Paris, France; Institute of Earth Sciences, University of Iceland, Reykjavik, Iceland; Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Shi X.,Risi C.,Pu T.,et al. Variability of Isotope Composition of Precipitation in the Southeastern Tibetan Plateau from the Synoptic to Seasonal Time Scale[J]. 中国科学院西北生态环境资源研究院,2020,125(6).
APA	Shi X..,Risi C..,Pu T..,Lacour J.-L..,Kong Y..,...&Xia D..(2020).Variability of Isotope Composition of Precipitation in the Southeastern Tibetan Plateau from the Synoptic to Seasonal Time Scale.Journal of Geophysical Research: Atmospheres,125(6).
MLA	Shi X.,et al."Variability of Isotope Composition of Precipitation in the Southeastern Tibetan Plateau from the Synoptic to Seasonal Time Scale".Journal of Geophysical Research: Atmospheres 125.6(2020).