1981—2010年平原县气温变化特征分析

根据1981—2010年山东省平原县的平均气温及逐日最高、最低气温资料,采用一元线性分析、Mann-Kendall检验等方法,详细分析了年平均气温、季平均最高/最低气温的变化规律和特点。结果表明:30年的年平均气温、最低气温和最高气温的线性变化均呈显著的上升趋势;年平均日较差呈明显的下降趋势,冬季日较差最大,夏季日较差最小;四季的平均日较差均呈明显的下降趋势;30年高温日数长期以来呈升高的趋势,低温日数长期以来呈明显的下降趋势。

Analysis on Temperature Variation Characteristics of Pingyuan County from 1981 to 2010

Based on the temperature data of Pingyuan Weather Station from 1981 to 2010 , including the mean temperature and daily maximum , minimum temperature data , using linear analysis method and the Mann-Kendall test , the change rules and characteristics of the annual average temperature , quarter average maximum and minimum temperature were analyzed.The results showed that the linear changes of the annual average temperature , quarter average maximum and minimum temperature in recent 30 years significantly rose.The annual average daily range had a significant downward trend , with winter daily range the most and summer daily range the least. Four seasons'average daily range had obvious downward trend. For a long time , the high-temperature days in 30 years had a rising tendency and the low-temperature day's significant downward trend.