东北地区夏季气温变化特征分析

Characteristics of summer air temperature in Northeast China

采用1951-2003年26个气象台站的夏季气温资料对我国东北地区夏季气温变化特征进行了分析。结果表明：近50多年来我国东北地区夏季气温主要经历了冷期、相对正常期和暖期3个阶段，夏季升温趋势达到0．15℃／10a。远超过全球、北半球、东北亚夏季的增暖程度。其对全球气候变暖的响应，一方面表现在夏季变暖、平均气温升高；另一方面表现在夏季气温变率加大；第三。气候变暖使东北夏季低温冷害明显减少、异常高温气候明显增多，但在变暖形势下局部发生低温冷害的现象仍然存在。

Based on summer air temperature data from 26 meteorological stations from 1951 to 2003,the characteristics of sun, her air temnperature in Northeast China （NEC） were analyzed in this paper. The results indicated that the climatic change in NEC todd be divided into three phrases： told period, normal period and warm period. The summer warming trend was 0.15 ℃/10a in NEC,and it was more than those in the Northern Hemisphere or the Northeast Asia over recent 50 years. The responses of dimate in NEC to global wanning included three aspects：（ 1）summer in NEC increased, （2） the summer temperature variation also increased, （3）the disasters caused by low temperature decreased and the damages caused by high temperature obviously under global warming.