辽宁省本溪市近60年气候变化态势分析

利用本溪和丹东市1951～2010年的气温和降水资料,运用线性趋势分析和Mann-Kendall突变检测分析方法,对近60年本溪市的气候变化特征和气候突变进行分析。结果表明,近60年来本溪市年平均气温呈上升趋势变化,其线性倾向率为0.17℃/10a;各季气温均呈变暖趋势,温度增幅依次为冬季、春季、秋季和夏季;年降水量和各季(除春季外)降水量均呈减少趋势变化。综合气温与降水变化特征,本溪气候呈暖干化变化趋势;本溪市气温与降水量具有明显的阶段性和季节性变化特征。

Analysis on Climate Change Tendency in Benxi, Liaoning in Recent 60 Years

Based on the temperature and precipitation data in Benxi and Dandong from 1951 -2010, using linear trend and Mann-Kendall meth- od, the variation characteristics and abrupt change of climate were analyzed. The results showed that annual average temperature was upward trend, its linear trend rate 0. 17 ℃/10a; season temperature also showed warming trend, but the temperature increase was followed by winter, spring, autumn and summer. Annual precipitation and season （except spring） precipitation showed decreasing trend. Considering variation char- acteristies of temperature and precipitation, the climate showed warming and drying trend in Benxi; the temperature and precipitation has signifi- cant periodic and seasonal variation characteristics in Bexni City.