江苏盛夏出现的凉伏与酷暑及环流分析

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

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 article defines the standards for low temperature and cool summer as well as high temperature and heating summer.The year and period of time that the phenomena occurred are analyzed.The height fields 500hpa level of the third ten-day in July to the second the-day in August in that year are combined.Comparing with two circulation fields,the specific difference is achieved by analyzing the changing process of main system during its earlier period and important information for weather forecast can be obtained.