1961～2004年南京市夏季气温变化特征分析

[目的]分析1961 ～2004年南京市夏季平均气温、最高气温、最低气温的变化特征.[方法]利用高淳站、江宁站、江浦站、溧水站、六合站、南京站6个气象站点1961 ～2004年的日平均气温、日最高气温、日最低气温数据,采用统计分析方法,对南京夏季的平均气温、最高气温、最低气温、≥35℃高温日数和热积温的变化特征进行研究.[结果]1961 ～2004年南京夏季平均气温、最高气温、最低气温均呈现增温趋势,热积温数值虽有明显上升,但高温天数并没有显著增长;20世纪60年代是一个夏季高温期,而70、80年代夏季气温有所下降,80年代是夏季气温最低的时期,90年代和2000～2004年的平均值普遍提高,90年代以后是一个夏季变热的时期.[结论]酷暑主要分布在60年代,凉夏主要分布在70、80年代.

Analysis on Variation Characteristic of Summer Temperature in Nanjing City During 1961-2004

[Objective]To analyze the variation characteristics of the average temperature,maximum temperature and minimum temperature in Nanjing for summer during 1961-2004.[Method] The daily mean temperature,daily maximum temperature,daily minimum temperature data of six weather stations in Gaochun station,Jiangning station,Jiangpu station,Lishui station,Liuhe station and Nanjing station during 1961-2004 were used to research the variation characteristic of average temperature,maximum temperature,minimum temperature,days with temperature ≥35 ℃ and hot accumulated temperature by statistical analysis method.[Result]The average temperature,maximum temperature and minimum tempera ture of summer temperature in Nanjing during 1961-2004 showed warming trend,although the numerical hot accumulated temperature had increased significantly,there was no significant increase in the number of high temperature days.The 1960s was a summer high temperature period,the summer temperature dropped in the 1970s and the 1980s,the 1980s was the lowest summer temperature period,the average temperature rose in the 1990s and 2000-2004;after the 1990s,summer temperature began hotter and hotter.[Conclusion] Hot summers were mainly distributed in the 1960s,while cool summers were mainly distributed in the 1970s and the 1980s.