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中文摘要: 作者介绍一种中长期寒潮预报方法。按照天气形势变化特征，从北半球划分出11个对广东中长期冷空气活动关系较密切的区域，然后根据500hPa候平均格点高度资料进行分区统计、信息提炼，再用相似离度理论做计算，找寻历史相似个例，最后用单站逐日气温进行迭加综合，并做出寒潮预报。
中文关键词: 格点资料，相似离度，寒潮预报
Abstract:A forecast method of mid- and long-term cold wave in Guangdong which based on the similar theory are introduced 11 key--regions in Northern Hemisphere connected closely with cold airactivities in Guangdong are choosed. Then weather information in each region are analyzed andextracted by using 500hpa pentad grid data. Finally the cold wave forecast,which based on dailytemperature at some stations of Guangdong,are made though comparison with the historical analogue examples.
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引用文本：
李开乐,1996.用500hPa候平均相似离度做中长期寒潮预报[J].气象,22(3):40-42.
,1996.A New Mid- and Long-range Cold Wave Forecast with Similar Parameter and 500hpa Pentad Grid Data[J].Meteor Mon,22(3):40-42.
李开乐,1996.用500hPa候平均相似离度做中长期寒潮预报[J].气象,22(3):40-42.
,1996.A New Mid- and Long-range Cold Wave Forecast with Similar Parameter and 500hpa Pentad Grid Data[J].Meteor Mon,22(3):40-42.