近60年西昌气温变化特征分析
Analysis of Temperature Variation Characteristics in Xichang in Recent 60 Years

本文利用西昌站1960~2019年的逐月平均气温资料，分析西昌近60年气温变化特征。结果表明：近60a年来，西昌气温变化趋势整体呈显著上升趋势，且年际气温变化率为0.20℃/10a，60a来气温上升了约1.2℃。增温主要是在21世纪00年代初期开始的。最低气温和最高气温也呈显著上升趋势，年际变化率分别为0.20℃/10a和0.32℃/10a。西昌年平均气温在2001年发生突变，突变前的平均气温为16.9℃，突变后的平均气温为17.7℃。最高气温和最低气温突变分别发生在2002年和1998年。
In this paper, the monthly average temperature data of Xichangstation from 1960 to 2019 were used to analyze the characteristics of temperature change in Xichang in recent 60 years. The results showed that in the past 60 years, the overall trend of temperature change in Xichang had shown a significant upward trend, and the annual temperature change rate was 0.20？C/10a, and the temperature had increased by about 1.2？C in the past 60 years. The warming mainly started in the early 2000s. The minimum temperature and maximum temperature also showed a significant upward trend, with annual variation rates of 0.20？C/10a and 0.32？C/10a, respectively. The annual average temperature in Xichang changed abruptly in 2001, with the average temperature before the change being 16.9？C and the average temperature after the change being 17.7？C. The abrupt changes in maximum and minimum temperatures occurred in 2002 and 1998 respectively.