ZHANG Yueqing,XIAO Guojie,CHEN Mengjia.Analysis on the Characteristics of Temperature Change in Yinchuan in Recent 60 Years[J].Journal of Chengdu University of Information Technology,2021,36(06):680-686.[doi:10.16836/j.cnki.jcuit.2021.06.015]
近60年银川气温变化特征分析
- Title:
- Analysis on the Characteristics of Temperature Change in Yinchuan in Recent 60 Years
- 文章编号:
- 2096-1618(2021)06-0680-07
- Keywords:
- climatology; climate change; temperature change; wavelet analysis; M-K test; climate tendency rate
- 分类号:
- P467
- 文献标志码:
- A
- 摘要:
- 为研究近60 a银川气温变化特征,利用银川1960-2019年逐月气温资料,通过线性倾向趋势分析、小波分析、M-K检验对年平均气温、各季气温、年最低和最高气温变化进行分析。研究结果表明:(1)近60 a来,银川年平均气温呈显著上升趋势,增温速率为0.45 ℃/10 a。各季节中,冬季增温速率最快,为0.60 ℃/10 a,其次是春季,增温速率为0.57 ℃/10 a,夏季和秋季的增温速率相对较慢,分别为0.34 ℃/10 a、0.33 ℃/10 a。(2)银川近60 a,年平均气温和春、夏、秋季气温主要震荡周期均为28 a,气温均经历了高—低—高,共7个循环交替,冬季气温主要震荡周期为5 a、19 a,年最低气温的主要震荡周期为6 a、15 a,年最高气温的主要震荡周期为28 a。(3)银川近60 a年平均气温上升趋势显著但并未发生明显突变,夏季、秋季、冬季的平均气温却发生突变,突变年分别出现在2003年、2000年、1987年,春季平均气温并未发生明显突变,年最高和最低气温突变年分别出现在2007年、1991年。
- Abstract:
- In order to study the variation characteristics of temperature change in Yinchuan, the monthly temperature data of Yinchuan from 1960 to 2019 were used to analyze the changes of annual average temperature, seasonal temperature, annual minimum and maximum temperature in recent 60 years by linear trend analysis, wavelet analysis and M-K test. The results show that:(1)in the past 60 years, the annual average temperature in Yinchuan has a significant upward trend, and the warming rate is 0.45 ℃/10 a.In each season, the warming rate was the fastest in winter(0.60 ℃/10 a), followed by spring(0.57 ℃/10 a), while the warming rate in summer and autumn was relatively slow(0.34 ℃/10 a and 0.33 ℃/10 a,respectively).(2)In recent 60 years, except in winter, the main oscillation periods of annual average temperature and seasonal temperature are 28 years, and the temperature has experienced high—low—high,a total of 7 cycles. The main oscillation periods in winter are 5 a and 19 a, the main oscillation periods of annual minimum temperature are 6 a and 15 a, and the main oscillation periods of annual maximum temperature are 28 a.(3)Although the annual average temperature in Yinchuan has a significant upward trend in recent 60 years, there is no obvious mutation, the average temperature in summer, autumn and winter has a mutation. The mutation years appear in 2003, 2000 and 1987 respectively, and there is no obvious mutation in spring. The abrupt change years of the highest and lowest temperature in 2007 and 1991 respectively.
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备注/Memo
收稿日期:2020-11-04
基金项目:四川省教育厅科研基金资助项目(17ZB0085)