【摘要】 采用汉中市气象站1951—2015年的月气温数据,使用滑动平均、线性回归分析、小波分析和Mann-Kendal非参数检验方法,分析了汉中市1951—2015年来气温变化特征及其规律.结果表明:汉中市1951—2015年平均气温不断升高,线性倾向率为0.21℃/10 a,在2001年前后发生突变,并存在50～60 a和75～80 a的周期变化;各个季节平均气温也均在升高,其线性倾向率分别为0.289、0.106、0.201、0.245℃/10 a,其中春季增温最为明显;春、夏、秋季平均气温与年平均气温一致,升温趋势趋同,而冬季相对较早,突变节点在1996年.更多还原

【Abstract】 In this paper,monthly air temperature data of Hanzhong meteorological station from 1951 to 2015 were used,and the characteristics and laws of air temperature change in Hanzhong city in the past 65 years were analyzed using the moving average,linear regression analysis,wavelet analysis and Mann-Kendal non-parametric test methods. The results showed that from 1951 to 2015 the average temperature was risen,linear trend rate was 0.21 ℃/10 a,and the mutation was occurred around 2001. And there were the periodic changes of 50-60 a and 75-80 a. Each season average temperatures were also risen,the linear trend rate were 0.289,0.106,0.201,0.245 ℃/10 a.The spring temperature was most obvious. We found the average temperature in spring,summer and autumn was consistent with the annual average temperature,and the warming trend was similar. However,winter was relatively early,and the abrupt transition node was in 1996.更多还原