Continental water recycling and H218O concentrations
Continental water recycling and H218O concentrations
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DOI：
10.1029/93gl01781
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发表时间：
1993-10
影响因子：
5.2
通讯作者：
R. Koster;D. Valpine;J. Jouzel
中科院分区：
文献类型：
--
作者：
R. Koster;D. Valpine;J. Jouzel
使用GCM与示踪剂诊断，我们研究大陆水分循环如何影响降水的稳定水同位素含量，重点是它的贡献的“噪音”在温度和δ 18 O之间的关系。在全球范围内，温度在-30 ° C至15°C之间，大陆循环解释了温度无法解释的δ 18 O年变化的三分之一以上。在确定北方夏季的δ 18 O分布时，循环似乎与温度一样重要。
Using a GCM fitted with tracer diagnostics, we examine how continental moisture recycling affects the stable water isotope content of precipitation, focusing on its contribution to the “noise” in the well-established relationship between temperature and δ18O. On a global basis, for temperatures between −30° and 15°C, continental recycling explains more than a third of the variability in annual δ18O that is not explained by temperature. Recycling appears almost as important as temperature in defining δ18O distributions during northern hemisphere summer.