1961-2013年青藏高原雪雨比变化（英文）

编号 zgly0001584529

文献类型 期刊论文

文献题名 1961-2013年青藏高原雪雨比变化（英文）

作者 王杰  张明军  王圣杰  任正果  车彦军  强芳  瞿德业 

作者单位 CollegeofGeographyandEnvironmentalScience  NorthwestNormalUniversity 

母体文献 Journal of Geographical Sciences 

年卷期 2016年09期

年份 2016 

分类号 P426.6 

关键词 TibetanPlateau  griddeddata  snowfall/rainfallratio  precipitation 

文摘内容 On the basis of two gridded datasets of daily precipitation and temperature with a spatial resolution of 0.5°×0.5°, and meteorological station data released by the National Meteorological Information Center（NMIC） during 1961–2013, the spatial and temporal variations of total amount of precipitation, amount of rainfall, amount of snowfall and snowfall/rainfall ratio（S/R） in the Tibetan Plateau（TP） are analyzed using Sen’s slope, the Mann–Kendall mutation test, Inverse Distance Weighting（IDW） and the Morlet wavelet. Total amount of precipitation and amount of rainfall generally show statistically significant increasing trends of 0.6 mm·a–1 and 1.3 mm·a–1, respectively, while amount of snowfall and S/R have significant decreasing trends of –0.6 mm·a–1 and –0.5% a–1, respectively. In most regions, due to significant increasing trends in total amount of precipitation and amount of rainfall, and significant decreasing trends in amount of snowfall, S/R shows a decreasing trend in the TP. Abrupt changes in total amount of precipitation, amount of rainfall, amount of snowfall and S/R are detected for 2005, 2004, 1996 and 1998, respectively. Total amount of precipitation, amount of rainfall, amount of snowfall and S/R are concentrated in cycles of approximately 5 years, 10 years, 16 years and 20 years, respectively. The trend magnitudes for total amount of precipitation and amount of rainfall all show decreasing-to-increasing trends with elevation, while amount of snowfall and S/R show decreasing trends.