1971-2010年无棣县降水变化趋势分析  

Analysis of Precipitation Change Tendency in Wudi County During 1971-2010

作　　者：徐青文 路淑文 刘树棣 王明涛 付华波 

机构地区：[1]无棣县气象局,山东滨州251900

出　　处：《湖北农业科学》2017年第12期2234-2239,共6页Hubei Agricultural Sciences

摘　　要：根据无棣县大监站及区域站1971-2010年40年降水资料,利用非参数检验法以及线性回归拟合法分析40年来无棣县的年总降水量、季节降水量以及年降水日数的变化规律以及突变性、稳定性等特征。结果表明,1971-2010年40年内无棣县年降水量呈上升趋势,波动较大,不存在突变。年降水日数总体呈微弱的减少趋势,年均降水日为65 d。降水主要集中在夏季,季节差别明显,夏季平均降水量比冬季多367.81 mm。春季降水量上升趋势较为明显,夏、秋、冬季降水呈不同程度的减少趋势。按时段划分,4~10月降水时段主要集中在6~8时。无棣县的大雨、暴雨日数增多,该强度降水量也呈上升趋势。According to the precipitation data of Dajian station and regional station in Wudi county in almost forty years （1971-2010）, using nonparametric test and linear regression methods, the change rules, mutability, stabilities and other characteristics of annual total precipitation, seasonal precipitation and annual precipitation days of Wudi county were analyzed in the past forty years. The results showed that the annual total precipitation showed a rising trend in the past forty years and fluctuated greatly and had no mutability. On the whole, annual precipitation days had a weak tendency to reduce and the average precipitation days was 65 days. Precipitation concentrated mainly in summer and it varied obviously in different seasons and the average summer precipitation was 367.81 mm more than winter precipitation. Spring precipitation had a dis- tinct rising trend while precipitations in summer, autumn and winter had reducing trends at different levels. Precipitation peri- od from April to September was mainly from six o＇clock to eight o＇clock when it was divided by time frame. The days of heavy rain and torrential rain in Wudi county increased and precipitation of such intensity showed a rising trend.

关 键 词：无棣县 降水量 降水日数 非参数检验 

分 类 号：P426.614[天文地球—大气科学及气象学]