LIU Yi,ZHOU Guobing,SUN Jun,et al.Climatic Characteristics of High Temperature in Chongqing from 1971 to 2018[J].Journal of Chengdu University of Information Technology,2021,36(03):349-354.[doi:10.16836/j.cnki.jcuit.2021.03.018]
1971-2018年重庆地区高温的气候特征
- Title:
- Climatic Characteristics of High Temperature in Chongqing from 1971 to 2018
- 文章编号:
- 2096-1618(2021)03-0349-06
- 分类号:
- P468.0+21
- 文献标志码:
- A
- 摘要:
- 为研究重庆地区高温特征,利用1971-2018年重庆地区34个观测站资料,采用气候趋势系数和小波分析等方法详细分析重庆地区高温天数和极端最高气温的时空演变特征。结论如下:(1)近48 a重庆地区高温天气非常显著,除重庆东南部的酉阳、黔江及秀山,其余地区极端最高气温均在40 ℃以上。(2)重庆的高温分布与台站的海拔高度有较密切关系,表现为长江和山谷中相对较多,随着海拔的上升,高温天数逐渐减少。(3)重庆高温年际变化显著,高温天气在3-10月均可以产生,5-9月为高温出现集中期,7、8月为高温的频发期,其中8月的高温日数最多,重庆大部分站点的高温日数及极端最高气温增加趋势非常显著。(4)重庆年高温日数存在准14～15 a,6～7 a的周期振荡; 重庆年极端最高气温存在8～9 a周期振荡,主要出现在1995-2008年。
- Abstract:
- In order to study the characteristics of high temperature in Chongqing,based on the data of 34 observation stations in Chongqing from 1971 to 2018,the temporal and spatial evolution characteristics of high temperature days and extreme maximum temperature in Chongqing were analyzed in detail by means of climate trend coefficient and wavelet analysis.The conclusions are as follows:(1)the high temperature weather in Chongqing is very significant in recent 48 years,except Youyang,Qianjiang and Xiushan in the southeast of Chongqing,the extreme maximum temperature in other areas is above 40 ℃.(2)the distribution of high temperature in Chongqing is closely related to the altitude of the station,which shows that there are relatively more in the Yangtze River and valleys, and the days of high temperature decrease gradually with the increase of altitude.(3)the interannual variation of high temperature in Chongqing is significant,and the high temperature weather can be produced between March and October.The period from May to September is a concentration period of high temperature.,and high temperature occurs frequently in July and August,among which the number of high temperature days is the most in August.The increasing trend of high temperature days and extreme maximum temperature at most stations in Chongqing is very significant.(4)the number of annual high temperature days in Chongqing has a quasi-14～15 a periodic oscillation of 6～7 a, and the annual extreme maximum temperature in Chongqing has an 8～9 a periodic oscillation,mainlyappears from 1995 to 2008.
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备注/Memo
收稿日期:2020-05-05
基金项目:重庆市气象局智能预报预测创新团队资助项目(ZHCXTD-201803); 高原与盆地暴雨旱涝灾害四川省重点实验室重点专项资助项目(四川省重点实验室2018-重点-11)