ZHAO Fuyan,WANG Ling,CHEN Zhongyu.Analysis on the Characteristics of Temperature Change in Chengdu from 1960 to 2018[J].Journal of Chengdu University of Information Technology,2020,35(05):579-583.[doi:10.16836/j.cnki.jcuit.2020.05.017]
1960-2018年成都市区气温变化特征分析
- Title:
- Analysis on the Characteristics of Temperature Change in Chengdu from 1960 to 2018
- 文章编号:
- 2096-1618(2020)05-0579-05
- Keywords:
- temperature change; M-K test; power spectrum analysis; Chengdu City
- 分类号:
- P423.3
- 文献标志码:
- A
- 摘要:
- 采用温江国家基准气候站1960-2018年月平均气温资料,经过新旧站点海拔订正,利用趋势分析、Mann-Kendall法及滑动t检验、功率谱分析等方法,研究在全球气候变暖背景下成都市区气温变化特征。结果表明:成都市区近59年平均气温总体上升趋势十分明显,气候倾向率为0.21 ℃/10 a,20世纪60-80年代中期为震荡下降倾向,之后呈显著上升趋势,21世纪10年代为近59年最暖年代; 成都市区年平均气温在1997年附近发生增暖性突变,突变后平均气温较突变前增加了0.91 ℃,增温倾向非常显著; 对气温距平通过db3小波进行带通滤波后分析可以确定年平均气温变化存在4年的主周期。
- Abstract:
- Based on the monthly average temperature data of Wenjiang national benchmark climate station from 1960 to 2018, after altitude correction of new and old stations,the characteristics of temperature change in Chengdu under the background of global warming are studied by trend analysis, Mann Kendall method, sliding t test, power spectrum analysis and other methods.The results show that the average temperature of Chengdu in the past 59 years has an obvious upward trend, with a climate tendency rate of 0.21 ℃/10 a. From the 1960s to the mid-1980s, there was a trend of concussion and decline, then a significant upward trend, and the decade of the 21st century was the warmest in nearly 59 years; The annual average temperature in Chengdu City had a sudden change of warming in 1997, and the average temperature after the change increased by 0.91 ℃ compared with that before the change, and the trend of warming was very significant; The annual level can be determined by the analysis of db3 wavelet band-pass filtering thatthere is a main period of 4 years for the change of average temperature.
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备注/Memo
收稿日期:2020-03-28