近56年潍坊市降水量变化特征分析

利用1961—2016年潍坊市9个县(市、区)降水量气候资源要素资料,采用线性趋势统计分析方法,对近56年潍坊市降水量变化特征进行了分析。结果表明,近56年来潍坊市降水主要集中在夏季,春季和冬季降水量占全年比重很小。降水量总体呈减少趋势,以24.05 mm/10 a的速率减少;年代际变化显著,20世纪60、70年代降水量处于偏多的阶段,80、90年代降水量明显偏少。

Analysis on the Characteristics of Precipitation in Weifang City in Recent 56 Years

Using the data of climatic resources of precipitation in nine counties (cities and districts) in Weifang City from 1961 to 2016,the change characteristics of precipitation in Weifang City in recent 56 years were analyzed by linear trend statistical analysis method.The results showed that the precipitation of Weifang City in the past 56 years mainly concentrated in summer,and the proportion of precipitation in spring and winter accounted for a very small proportion in the whole year.Precipitation decreased overall with a rate of 24.05 mm/10 a,and the interdecadal variation was significant.Precipitation in the 1960s and 1970s was at a high level,and precipitation in the 1980s and 1990s was obviously less.