期刊
GEOPHYSICAL RESEARCH LETTERS
卷 33, 期 6, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2005GL025347
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[ 1] Changes in the global monsoon rainfall over land were examined using four sets of rain- gauge precipitation data sets compiled for the period of 1948 - 2003 by climate diagnostic groups around the world. Here, we define a global monsoon rain domain according to annual precipitation range, using simple objective criteria; then, we propose metrics for quantifying the intensity of the global monsoon precipitation. The results suggest an overall weakening of the global land monsoon precipitation in the last 56 years, primarily due to weakening of the summer monsoon rainfall in the Northern Hemisphere. However, since 1980, the global land monsoon rainfall has seen no significant trend, which contrasts with the rapid intensification of global warming during the same period. Meanwhile the oceanic monsoon precipitation shows an increasing trend after 1980. The results provide a rigorous test for climate models that will be used in future climate-change assessment.
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