The strengthening East Asia summer monsoon since the early 1990s |
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| Authors: | Liu HaiWen Zhou TianJun Zhu YuXiang Lin YiHua |
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| Affiliation: | [1]Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, College of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China [2]State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics,Chinese Academy of Sciences, Beijing 100029, China [3]Chongqing Institute of Meteorological Sciences, Chongqing 401147, China [4]China Meteorological Administration Training Centre, Beijing 100081, China |
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| Abstract: | Previous studies have documented a weakening tendency of the East Asian summer monsoon (EASM) since the end of the 1970s. In this study, we report that the EASM has been recovering since the early 1990s, although its strength is still less than in previous decades (averaged over the period 1965–1980). Following the recovery of the EASM, there has been a tendency in the last decade toward northward-moving rainbands and excessive rainfall in the Huaihe River valley (110°–120°E, 30°–35°N). There is evidence suggesting that the strengthening EASM since the early 1990s is linked to interdecadal change of land-sea thermal contrast. |
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| Keywords: | East Asia summer monsoon precipitation interdecadal change land-sea thermal contrast |
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