延安市近58年降水变化特征分析
nalysis of change charactristics of Yan'an precipitation of recent 58 years
根据1957～2014年延安市58年逐日降水量观测资料，运用统计分析方法和趋势分析方法，对延安市降水量动态变化情况进行了分析。结果表明：延安地区年降水量正在以9.14mm/10a的速率减少；季节性降水也普遍呈现减小的趋势，其中秋季减小幅度最大，冬季变化比较平稳；降雨年内主要集中在7、8月，且多以暴雨形式出现，12月和1月降雨较少；20世纪10年代以来降水量开始呈现明显增加趋势。
ccording to Yan'an daily precipitation observation data from 1957 to 2014 in 58 years , using statistical analysis method and the trend analysis method, analyzes the dynamic change of Yan'an precipitation. The results show that the Yan'an annual precipitation is reducing at a rate of 9.14 mm/10a; Seasonal precipitation is also generally decreasing at present, and fall precipitation changes sharpest, winter changes smoothly; Precipitation mainly appeared in July and August, and take the form of rainstorm, less rain in December and January; Since the 2010s, the precipitation shows a trend of significant increase.
韩霁昌、刘海涛、陈超、王琪、李劲彬
大气科学（气象学）
延安市降水变化特征变化趋势降水量距平
Yan'anPrecipitation change charactristicsChange trendPrecipitation anomaly
韩霁昌,刘海涛,陈超,王琪,李劲彬.延安市近58年降水变化特征分析[EB/OL].(2016-05-31)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/201605-1612.点此复制
评论