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Variations of stable isotopic compositions in precipitation on the Tibetan Plateau and its adjacent regions |
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| Authors: | Xinping Zhang Masayoshi Nakawo Tandong Yao Jiankang Han and Zichu Xie |
| Institution: | 1. Chinese Academy of Meteorological Sciences, Beijing 100081, China 2. Institute for Hydrospheric-Atmospheric Sciences, Nagoya University, Nagoya 464-8601, Japan 3. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
| Abstract: | There is no temperature effect in the southern Tibetan Plateau and South Asia to the south of the Tanggula Mountains. Amount effect has been observed at a few sampling stations accounting for about a half of the statistical stations. There is notable temperature effect in the middle and northern Tibetan Plateau and its adjacent Central Asia to the north of the Tanggula Mountains. Because vapor directly originates from low-latitude oceans, the relative heavy δ18O with small variation characterizes the rainfall in South Asia. A sharp depletion of the stable isotopic compositions in precipitation takes place from Kyangjin on the southern slope of the Himalayas to the Tanggula Mountains in the middle plateau. From the Tanggula Mountains to the northern Tibetan Plateau, the δ18O in precipitation increases with increasing latitude. |
| Keywords: | Tibetan Plateau and its adjacent regions precipitation stable isotopes |
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