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首页> 外文期刊>Atmospheric research >Stable isotope variations in precipitation over Deqin on the southeastern margin of the Tibetan Plateau during different seasons related to various meteorological factors and moisture sources
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Stable isotope variations in precipitation over Deqin on the southeastern margin of the Tibetan Plateau during different seasons related to various meteorological factors and moisture sources

机译：青藏高原东南缘德钦地区不同季节降水的稳定同位素变化与各种气象因子和水分来源的关系。

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摘要

This study investigated the variations of stable isotopes (delta O-18 and delta D) in precipitation at Deqin on the southeastern margin of the Tibetan Plateau. The results show that correlations between stable isotopes in precipitation and temperature vary during different seasons. In comparison, an apparent inverse correlation between stable isotopes and precipitation amount exists throughout different seasons. Hence, the "amount effect" appears to have significantly controlled the stable isotope variations in precipitation over the entire sampling period, rather than the "temperature effect". The overall temporal variations of delta O-18 and delta D in precipitation from Deqin are similar to those from a southern station at Xishuangbanna. Both stations demonstrate considerably depleted precipitation delta O-18 values in the summer as a consequence of intense Asian summer monsoon activities. However, at Xishuangbanna, the occurrences of the timing and duration of the depleted delta O-18 values, as well as the negative surface lift index values, occur earlier and last longer than those at Deqin. These results indicate that the Asian summer monsoon onset is later and that the duration of the monsoon activities is shorter at Deqin relative to Xishuangbanna. (C) 2015 Elsevier B.V. All rights reserved.
机译：本研究调查了青藏高原东南缘德钦地区降水中稳定同位素（δO-18和δD）的变化。结果表明，不同季节降水中稳定同位素与温度之间的相关关系有所不同。相比之下，在不同季节中，稳定同位素与降水量之间存在明显的反相关关系。因此，“量效应”似乎已在整个采样周期内显着控制了降水中稳定的同位素变化，而不是“温度效应”。德钦降水中三角洲O-18和三角洲D的总体时间变化与西双版纳南部站的相似。由于亚洲夏季强烈的季风活动，两个站都显示出夏季的降水三角洲O-18值大大减少。但是，在西双版纳，耗尽的O-18值的时间和持续时间以及负表面升力指数值的发生比德钦的发生更早，持续时间更长。这些结果表明，相对于西双版纳而言，德钦的亚洲夏季风爆发较晚，季风活动的持续时间较短。 （C）2015 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Atmospheric research》 |2016年第3期|123-130|共8页
  • 作者

    Yu Wusheng; Wei Feili; Ma Yaoming; Liu Wenjie; Zhang Yingyan; Luo Lun; Tian Lide; Xu Baiqing; Qu Dongmei;

  • 作者单位

    Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China|CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China;

    Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China|Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China;

    Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China|CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China;

    Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Menglun 666303, Yunnan, Peoples R China;

    China Meteorol Adm, Deqin Meteorol Stn, Diqing 674500, Yunnan, Peoples R China;

    Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China;

    Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China|CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China;

    Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China|CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China;

    Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Precipitation; Stable isotopes; Temperature; Precipitation amount; Asian summer monsoon; Westerlies;

    机译：降水;稳定同位素;温度;降水量;亚洲夏季风;西风;

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