江苏盛夏出现的凉伏与酷暑及环流分析

定义出低温凉伏与高温酷暑的标准 ,统计分析出现的年份和时段。分别合成低温凉伏与高温酷暑年 7月下旬— 8月中旬 50 0hpa高度场。对比两环流场 ,得出特征差异。追朔主要系统前期演变过程 ,为预测提供有意义的线索。

The Cool and Hot Days and Its Circulation Analysis of Mid-summer in Jiangsu

The article defines the standards for low temperature andc ool summer as well as high temperature and heating summer.The year and period of timethat the phenomena occurred are analyzed.The height fields 500hpa level of the thirdten-day in July to the second the-day in August in that year are comb ined.Comparing withtwo circulation fields,the specific difference is achieved b y analyzing the changingprocess of main system during its earlier period and im portant information for weatherforecast can be obtained.