Abstract：Changes in snowfall not only alter the temporal distribution of intra-annual runoff, but also the available annual water resources. The characteristics and temporal trend of snowfall were evaluated during the past five decades in China. Based on daily observations from 743 national meteorological stations for the period 1956-2010, an empirical relationship was used to identify precipitation types. The interpolated 10 km grid snowfall data was then analyzed at different time scales. The results indicate that the annual snowfall shows inter-decadal variations of "less-more-less" in the regions other than the Yangtze River region. The evenly distributed snowfalls in these regions during the cold season result in significant accumulation, which tends to yield more total annual runoff. Differently, decreasing annual snowfalls in the mid-and lower-reaches of the Yangtze River region are due to several single day snowfalls. So, the snowfall results in little runoff in these regions.
章诞武, 丛振涛, 倪广恒. 1956-2010年中国降雪特征变化[J]. 清华大学学报（自然科学版）, 2016, 56(4): 381-386,393.
ZHANG Danwu, CONG Zhentao, NI Guangheng. Snowfall changes in China during 1956-2010. Journal of Tsinghua University(Science and Technology), 2016, 56(4): 381-386,393.
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2016, Vol. 56 
