Variability of East Asian Summer Monsoon and Its Association with Rainfall Trend over Songhuajiang-Nenjiang River Basin
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Abstract:
The interannual and interdecadal variability of East Asian summer monsoon and its impacts on summer precipitation over the Songhuajiang-Nenjiang River basin are investigated based on NCAR/NCEP reanalysis data and 39-station rainfall data from 1951 to 2000. The results show that both East Asian summer monsoon and the rainfall over the Songhuajiang-Nenjiang River Basin possesses the variation periods of 3 - 5 and 10 - 12 years. Two climatic jumps occurred at the end of the 1960s and the beginning of the 1980s, respectively. East Asian summer monsoon significantly influences the rainfall over the Songhuajiang-Nenjiang River basin. In addition, factors such as the westerly and the Western Pacific subtropical high have also impacts on summer rainfall over the Songhuajiang-Nenjiang River basin.
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Clc Number:
P425.42
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.