Authors analyzed the changes of daily precipitation for 164 meteorological stations in China in winter during the period 1956-2002.According to the trends of seasonal precipitation change,7 sub-regions were determined and details for each sub-region were investigated.China as a whole,the wintertime precipitation,daily precipitation intensity,and the number of extreme precipitation events showed increasing trends.Among all 7 sub-regions,Northwest China experienced relatively significant changes,with a trend of 7.03%/10a in precipitation,of 0.76 d/10a in the number of rainy days,and of 0.04 mm/(d·10 a) in precipitation intensity.Particularly a notable jump-like rise occurred in the late 1980s.In North and Middle China the precipitation amount showed decrease trends.Three southern sub-regions showed notable and same increasing trends.The relationship between daily precipitation variability and temperature was very weak in South and Southeast China,but their links to winter monsoon and Eurasia teleconnection pattern were significant.The daily precipitation variability and temperature in Southwest China showed strong connection to Arctic Oscillation.There was no consistent and notable trend in Northeast China.
FANG Qiao-Min, GONG Dao-Yi, MAO Rui
. Changes of Daily Precipitation of China in Wintertime During the Last 46 Years[J]. SCIENTIA GEOGRAPHICA SINICA, 2007
, 27(5)
: 711
-717
.
DOI: 10.13249/j.cnki.sgs.2007.05.711
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