1961—2013年威海市气温变化特征及突变分析

文章采用1961—2013年威海市所辖4个气象站地面观测气温资料,统计分析了威海市近53a气温变化特征,并利用Mann-Kendall法对年平均气温突变特征进行了分析。结果表明:威海市年平均气温明显呈增暖趋势,气候变化趋势倾向率为0.3°C/10a,年平均最高、最低气温气候变化趋势倾向率分别为0.2°C/10a、0.3°C/10a;近53a威海市年平均气温在1987年发生了由冷转暖的突变,增暖趋势自1992年开始趋于显著。

Temperature Variation Characteristics and Mutation Analysisin Wei Hai from 1961 to 2013

Using the temperature data from ground-based observation of 4 meteorological stations in Wei Hai from 1961 to 2013, this article analyzed temperature changes characteristic of 53 years. The mutation characteristic of average temperature was analyzed by Mann-Kendall. The results showed that the annual average temperature showed a warming trend significantly, the tendency rate of climatic variation trend was 0.3 ℃/10 a, the tendency rate of the annual average maximum temperature was 0.2 ℃/10 a, the tendency rate of the annual average minimum temperature was 0.3 ℃/10 a. The mean temperature of this area has a mutation from cold to warm in recent 53 a and the jump point was at 1987. Warming trend began to become more significant since 1992.