1981-2010年甘肃夏季高温天气和高温日数变化分析

Analysis of hot weather and high temperature days in the summer of Gansu Province from 1981 to 2010

利用国家气象信息中心提供的甘肃省36个台站1981-2010年逐日气温资料,分析了甘肃省30a高温事件特征及温度距平变化.结果表明,自2000年以来,甘肃6-8月份的平均气温距平基本为正值,且在2010年达到最高;2006年高温日数最多,平均达到24.1 d,从长期变化看出,近30 a夏季高温日数有增加趋势;2010年夏季7个台站出现超过35℃的极端高温天气.

36 stations＇ daily temperature data for Gansu Province from 1981 to 2010 were used to analyze high temperature event characteristics and anomalies during these 30 years.It was shown that the average temperature anomalies in June,July and August were basically positive after since the beginning of the 2000,and then they reached the highest in 2010.The largest number of high temperature days appeared in 2006 in Gansu,amounting to 24.1 d.Seen from the long-term changes,the summer high temperature days for nearly 30 years had an increasing trend.For the temperature distribution analysis in the summer of 2010,many hot days were found,and 7 stations showed a high temperature of more than 35℃.