1949—2019年影响南京市的台风特征统计分析

Statistical analysis of characteristics of typhoon affecting Nanjing City from 1949 to 2019

为了研究台风对南京市的影响规律,采用数理统计、累积距平等方法对1949—2019年影响南京市的台风年内、年际变化进行了统计分析,根据登陆地点、台风路径、登陆月份的不同分别分析台风对南京市降水的影响。结果表明:影响南京市的台风数量年际变化较大,近10年明显增多,台风登陆时间主要集中在7—9月;影响南京市降水的台风路径主要为Ⅱ类,上海登陆的台风及9月登陆的台风带来的平均降水量最大。

In order to explore the impact of typhoons on Nanjing city,this paper uses mathematical statistics,cumulative anomaly,MK test and other methods to make statistical analysis of the annual and interannual changes of typhoons affecting Nanjing City from 1949 to 2019,and analyzes the impact of typhoons on the precipitation of Nanjing city according to the different landing location,typhoon path and landing month.The results show that the number of typhoons affecting Nanjing has a significant inter-annual change,and the number of typhoons increases significantly in the past 10 years,and the typhoon landing time is mainly concentrated in August to September.The typhoon that affected the rainfall in Nanjing mainly fell into categoryⅡ,and the typhoons landing in Shanghai and in September brought the highest average precipitation.Through the analysis,we further improve the understanding of the typhoons that affected Nanjing.