Cite this article: | 段连强,刘风华,苏永军,等.中国东部季风区降水δ18O与ENSO事件的关系[J].灌溉排水学报,0,():-. |
| Duan Lian-qiang,Liu Feng-hua,Su Yong-jun,et al.中国东部季风区降水δ18O与ENSO事件的关系[J].灌溉排水学报,0,():-. |
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DOI: |
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Response mechanism of precipitation δ18O and ENSO events in monsoon region of Eastern China |
Duan Lian-qiang1,2,3, Liu Feng-hua4, Su Yong-jun4, Kong Shu-qi4
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1.Cangzhou Water Conservancy Survey and Design Institute;2.China Hebei University of Water Resources and Electric Engineering;3.China;4.Hebei University of Water Resources and Electric Engineering
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Abstract: |
The variation of moisture sources and large-scale convection process under ENSO background are closely related to the stable isotope characteristics of precipitation in the monsoon area, to research the response mechanism of moisture sources variation/ENSO events and precipitation isotope characteristics is helpful to further clarify the water cycle model in the eastern monsoon region.Based on the precipitation isotopes and meteorological data of 60 stations in the eastern monsoon region of China, the response mechanism between ENSO events and stable isotopes was studied by OLR technology.The results show that the value of δ18O gradually decreases from southeast to northwest in space, which is influenced by topography, and higher in winter and lower in summer, the ENSO event has a regular effect on the fractionation of isotopes.The variation of ITCZ is closely related to the stable isotope characteristics in the monsoon region, and the local climate has a profound influence on the isotope characteristics. . |
Key words: stable isotopes;ENSO;OLR field;ITCZ;monsoon region of Eastern China |
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