1981―2011年旅顺地区暴雨特征分析.doc

1981―2011年旅顺地区暴雨特征分析
摘要大?B市旅顺口区具有北温带季风气候特征,四季分明,冬夏长、春秋短,日光充足,雨量适中。1981―2011年旅顺本站共出现暴雨56 d,年暴雨日数比较少,年际差别虽然仅有几天,但是年差异较大,分布不规律。从暴雨日数月分布来看,旅顺本站月暴雨日数呈双月单峰型分布,出现暴雨的月份在3―9月,其他月份没有出现暴雨天气过程。旅顺本站暴雨季节分布主要在春季、夏季和秋季,冬季近31年没有出现暴雨现象,所有针对暴雨的防范措施主要在春季和夏季做好准备工作,旅顺气象台要在相应的季节做好暴雨预报工作,为广大人民群众提供预报服务。
关键词暴雨日数;预报服务;旅顺地区;1981―2011年
中图分类号 + 文献标识码 A 文章编号 1007-5739(2017)10-0192-01
Abstract Lvshunkou District of Dalian City has a north temperate monsoon climate characteristics,which has four distinct seasons,long winter and summer,short spring and autumn,sufficient sunshine,moderate rainfall. In recent 31 years
,a total of 56 days of rainstorm appeared in Lvshun Station,where had less rainstorm days,although only a few days were different among years,but the differences were large and irregular. From the distribution of rainstorms for several months,the monthly rainstorm days at Lvshun Station showed a bimodal single-peak distribution. The heavy rain occurred from March to September for 7 months,and no rainstorm occurred in other months. Lvshun Station rainstorm season mainly appeared in spring,summer and autumn,there was no rainstorm phenomenon in winter in nearly 31 ,all the preparatory work of rainstorm preventive measures were mainly in spring and summer,Lvshun Weather Station should do a good job of rainstorm forecasting in the appropriate season,to provide forecast