基于地统计分析的1974～2004年东北三省夏季气温时空演变规律

[目的]基于地统计分析,研究1974～2004年东北三省夏季气温时空演变规律。[方法]采取气候倾向率与地统计分析结合的方法,对东北三省1974～2004年夏季平均气温时空演变规律进行探讨分析。[结果]东北三省夏季气温多年平均分布总体上呈现由南向北、由西向东递减的趋势;东北三省平均气温总体呈上升趋势,且以辽宁省增幅最大;1994年夏季平均气温要显著高于其他年份,气候较为异常;东北三省地区增温速度的整体趋势是自吉林省东南部向其他地区逐渐降低。[结论]该研究有助于认识东北三省气温时空结构和变化特征。

Spatio-temporal Change Characteristics of Summer Mean Temperature in Northeast China during 1974-2004 Based on Geostatistics

[ Objective] The research aimed to study spatio-temporal change characteristics of summer mean temperature in northeast China during 1974 -2004 based on geostatistics. [ Method ] By combining climate tendency rate and geostatistics, spatio-temporal change character- istics of summer mean temperature in northeast China during 1974 -2004 were discussed. [ Result] Summer mean temperature distribution in northeast China for many years showed a trend of decreasing from south and west to north and east. Summer mean temperature in northeast China overall showed rise trend, and the biggest temperature rise magnitude was in Liaoning Province. Mean summer temperature in 1994 was significantly higher than that in other years, and climate was abnormal. The rise speed of summer mean temperature in northeast China showed a trend of decreasing from southeast Jilin Province to other areas. [ Conclusion] The research contributed to recognize spatio-temporal structure and chang6 characteristics of the temperature in northeast China.