20世纪后半叶山西省气温和降水变化分析

Analysis of Tmperature and Precipitation Change of second half 20th century in Shanxi Province

利用山西省6个有代表性的气象观测站1951年～2000年的气温与降水资料，分析20世纪后半叶山西地区的气候变化，结果表明：山西地区气温呈上升趋势(0．26℃／10a)，特别是90年代增温十分明显，1999年是这50年来最暖的一年。以70年代中期为界，将山西分为冷、暖两个阶段，前期为冷期，后期为暖期。50年来降水量呈明显减少趋势(-15．1mm／10a)。

Climatic change were analyzed by using the temperature and precipitation data of 6 representative weather station 1951 - 2000 in Shanxi. The result indicated that temperature showed the trend of escalation (0. 26℃/10a), specially in 90' s the increasing temperature trend are extremely obvious, it is the wannest year in 1999 in 50 years, it is warm period before Middle 70' s and cold period after middle 70' s. The precipitation showed the trend of obvious reduced( - 15. 1mm/10a).