近60年来平潭综合实验区气温变化特征

Characteristics of Tempe-rature Variation in Pingtan Comprehensive Experim-ental Area in the Past 60 Years

利用平潭1960—2019年气温观测资料,运用趋势滑动平均、线性倾向估计法和Mann-Kendall突变检验等统计分析方法,分析平潭气象站气温变化。结果表明:(1)1960—2019年平潭气象站年平均气温以0.213℃/10 a的速率呈明显上升趋势;季节平均气温均以不同速率上升,春冬季上升趋势最为显著;(2)年平均最高、最低气温均呈上升趋势,年平均最低气温上升趋势显著,其增温速率远大于年平均最高气温,冬季平均最低气温上升趋势最为明显;(3)平潭气温自20世纪90年开始表现出增温趋势,年平均气温、季节平均气温、年平均最高、年平均最低气温均存在突变现象,21世纪增暖趋势更为显著,年平均气温突变点在1996年。

Using Pingtan’s temperature observation data from 1960 to 2019,statistical analysis methods such as trend moving average,linear trend estimation and Mann-Kendall mutation test were used to analyze temperature changes in Pingtan weather station.The results show that:(1)The annual average temperature of Pingtan Meteorological Station from 1960 to 2019 has an obvious rising trend at a rate of 0.213℃/10 a;the seasonal average temperature rises at different rates,and the rising trend is the most significant in spring and winter.(2)The annual average maximum and minimum temperatures both show an upward trend,and the annual average minimum temperature has a significant rising trend,and its temperature increase rate is much higher than the annual average maximum temperature.The average minimum temperature in winter has the most obvious rising trend.(3)The temperature in Pingtan has shown an increasing trend since the 1990s.The annual average temperature,seasonal average temperature,annual average maximum,and annual average minimum temperature all have abrupt changes.The 21st century warming trend is even more pronounced.The sudden change in temperature was in 1996.