依安县近50a气温变化趋势分析

Long-term trend analysis of atmospheric temperature variations in recent 50 years in Yian county

通过对依安县气象站1961-2010年气温资料进行统计分析,得出依安县的年平均气温呈上升趋势﹙0.45℃/10 a﹚,四季气温也呈上升趋势,尤其是冬季变暖最明显﹙0.58℃/10 a﹚;年平均最低气温的上升趋势﹙0.73℃/10 a﹚远大于年平均最高气温的上升趋势﹙0.22℃/10 a﹚。以20世纪80年代末为界分为冷暖两个阶段,前为冷期,后为暖期。

analyzing the atmospheric temperature data of Yian from 1961-2010,it found that the annual average atmospheric temperature is rising（0.45℃/10 a）and the seasonal temperature is rising too, especially in winter （0.575 %/10 a）.The upward trend of the average annual minimum temperature （0.727℃/10 a） is more than that of the average annual maximum temperature （0.222 ℃/10 a）. it is divided into two stages of the cold and warm with the end of 1980s as the boundary, the before is cold period, the after is warm period.