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、MannKendall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。
Based on the monthly average temperature data of Wenjiang national benchmark climate station from 1960 to2018,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 1960 s to the mid-1980 s,there was a trend of concussion and decline,then a significant upward trend,and the decade of the 21 st 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.
作者
赵福燕
王凌
陈中钰
ZHAO Fuyan;WANG Ling;CHEN Zhongyu(Sichuan provincial Meteorological Observation and Data Centre,Chengdu,610072,China;Heavy Rain and Drought-Flood Disaster in Plateau and Basin Key Laboratory of Sichuan Province,Chengdu,610072,china)
出处
《成都信息工程大学学报》
2020年第5期579-583,共5页
Journal of Chengdu University of Information Technology
关键词
气温变化
M-K检验
功率谱分析
成都市区
temperature change
M-K test
power spectrum analysis
Chengdu City
