鄂托克前旗近5年降水特征分析

Analysis on Precipitation Characteristics of Etuokeqianqi in the Last Five Years

利用2013—2017年鄂托克前旗国家一般气象观测站和各镇人工雨情点降水量资料,分析了近5年降水的概况和特征。结果表明,鄂托克前旗降水时空分布不均匀,自东南向西北降水量逐渐减少,近5年平均降水量略有增加。4—6月降水占整个生长季(4—9月)降水的比例不足30%,7—9月降水占整个生长季(4—9月)降水的71.8%,最大月降水量出现在9月份,为54.9 mm。

The general situation and characteristics of precipitation in the lastfive years were analyzed by using the precipitation data from the national gen- eral meteorologicalstationand therain regimeobservation pointof each town in Etuokeqianqi during 2013 2017. The results showed that the precipitation in Etuokeqianqiwas not uniform in spatial and temporal distribution, with the pre- cipitation gradually decreasing from southeast to northwest, and the average precipitation slightly increased in the last five years. The precipitation from April to June accounted for less than 30% of the precipitation in the whole growth season （April to September）, and the precipita- tion from July to September accounted for 71.8% of the precipitation in the whole growing season. The maximum monthly precipitation occurred in September with 54.9 ram.