1972—2020年衡水市气温变化特征分析

Analysis of Temperature Variation Characteristics of Hengshui City from 1972 to 2020

利用衡水市11个国家气象观测站1972—2020年的地面气象资料,采用线性趋势分析、M-K检验以及小波分析等方法,对气温时空变化特征进行分析。结果表明:衡水市气温空间分布规律明显,平均气温由东北向西南递增;衡水市近49 a的年平均气温总体呈上升趋势,春季增温趋势最大,冬季次之,最低气温增幅明显高于最高气温增幅,气候变暖主要来自最低气温升高的贡献。

Based on the surface meteorological data of 11 national meteorological observation stations in Hengshui from 1972 to 2020,the temporal and spatial variation characteristics of temperature are ana⁃lyzed by using the methods of linear trend analysis,m-k test and wavelet analysis.The results show that the spatial distribution law of temperature in Hengshui City is obvious,and the average temperature in⁃creases from northeast to southwest;The annual average temperature of Hengshui City in recent 49 years generally shows an upward trend,with the largest warming trend in spring,followed by winter.The in⁃crease of the minimum temperature is significantly higher than that of the maximum temperature.Cli⁃mate warming mainly comes from the contribution of the increase of the minimum temperature.