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中文摘要: 利用海口市近52年四季及年平均气温、平均最高、最低气温及极端最高最低气温资料，研究其变化趋势，结果表明，各个季节(春季除外)和年平均气温都存在显著的增高趋势，其中冬季和年平均气温增温趋势非常显著；最高、最低气温的非对称变化显著，增温主要发生在夜间，无论平均最低气温还是极端最低气温都存在显著的增高趋势，白天气温变化趋势都不显著；气温日较差都呈显著的下降趋势；各个季节(冬季除外)及年气温突变性增温主要发生在夜间，且在前期夏季白天气温发生跃变性降温。
中文关键词: 气温，非对称变化，突变
Abstract:Based on seasonal and annual mean temperature, mean maximum and minimum temperature for the last 52 years of Haikou, their change tendency are investigated. Results show that seasonal and annual mean temperature have obviously increasing tendency, specially for winter and annual cases. The asymmetric change of maximum and minimum is distinct, temperature increase mainly at night. The mean minimum or the extreme minimum temperature has clear increasing tendency, otherwise temperature in daytime hasn't. All the daily range of temperature have decreasing tendency. Seasonal and annual temperature's paroxysmal increase mainly happen at night, and the summer daytime temperature has paroxysmal decrease in the early stage.
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引用文本：
郑艳,张永领,吴胜安,2005.海口市气温变化及最高最低气温的非对称变化[J].气象,31(7):28-31.
,2005.Temperature Change and Asymmetric Change of Maximum and Minimum Temperature of Haikou, Hainan Province[J].Meteor Mon,31(7):28-31.
郑艳,张永领,吴胜安,2005.海口市气温变化及最高最低气温的非对称变化[J].气象,31(7):28-31.
,2005.Temperature Change and Asymmetric Change of Maximum and Minimum Temperature of Haikou, Hainan Province[J].Meteor Mon,31(7):28-31.