中国近半个世纪最高气温变化特征

THE MAXIMUM TEMPERATURE CHANGE FEATURES FOR NEAR HALF CENTURY IN CHINA

本文根据中国164个站1951－1995年极端气温资料分析了中国各地区平均最高气温45年来的多年变化特征，指出中国北方趋势变化并不明显，80年代后期有明显上升，西南地区80年代后期急剧下降，长江流域以南6O年代降温后变化不大，青藏高原变化较小。冬季的多年变化也各不相同，有区域性差异。EOF分析表明中国各地大多数年份有相似变化趋势，也有一些年份长江流域以南与其它各地变化相反。

Using 1951 - 1995 temperature data of 164 Chinese meteorological stations,the mean maximum temperature change features for 45 years are analyzed over Chinese everyarea. It is pointed that the temperature change is not quite clear in north China,went up during the late l98Os,descended during the late 1980s in southeast China, is not qulte clear alsoduring the late 1960s south to The Yangtze River, and is small in Qingzang Plateau. Formany years the temperature seasonal and regional change are clearly different. Almost everyyear temperature change has similar trend by EOF analyzing,and for another years it has opposite trend in South to Yangtze River.