WANG Fuping,XIAO Guojie,PU Xuemin,et al.Analysis on the Variation Characteristics of Sunlight in Yibin near 59 Years[J].Journal of Chengdu University of Information Technology,2020,35(03):347-351.[doi:10.16836/j.cnki.jcuit.2020.03.016]
宜宾近59 a日照变化特征分析
- Title:
- Analysis on the Variation Characteristics of Sunlight in Yibin near 59 Years
- 文章编号:
- 2096-1618(2020)03-0347-05
- 关键词:
- 大气科学; 气候变化; 日照时数; Mann-Kendall检验; Morlet小波分析; 宜宾
- Keywords:
- atmospheric science; climate change; sunshine hours; Mann-Kendall test; Morlet wavelet analysis; Yibin
- 分类号:
- P467
- 文献标志码:
- A
- 摘要:
- 为给宜宾合理利用日照资源提供更多科学依据,利用宜宾站1960-2018年逐月日照时数资料,采用线性倾向估计法、Mann-Kendall检验法和Morlet小波分析法,研究了宜宾日照时数近59 a日照变化特征。得到以下结论:近59 a,日照时数年际变化呈现显著的下降趋势,气候倾向率为-42.4 h/10 a。各季节日照时数的年际变化均呈下降趋势,夏季日照时数随时间减少速度最快,春季最慢。月日照时数最大值在8月。年日照时数突变时间是1987年。年日照时数的主要周期为28 a、15 a。
- Abstract:
- In order to provide more scientific basis for rational utilization of sunshine resources in Yibin, the data of monthly sunshine hours in Yibin Station from 1960 to 2018 were used in this paper, and the characteristics of sunshine hours change in Yibin in recent 59 years were summarized by using linear tendency estimation method, Mann-Kendall test and Morlet wavelet analysis. The results show that in the past 59 years, the inter-year changes in sunlight showed a significant downward trend, the climate tendency rate was -42.4 h/10 a. The annual variation of sunshine hours in each season showed a downward trend,and summer sunshine hours decrease fastest with time and spring is slowest. Maximum monthly sunshine hours was in August. The mutation time of annual sunshine hours was 1987. The main periods of annual sunshine hours were 28 years and 15 years.
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备注/Memo
收稿日期:2019-07-10 基金项目:国家自然科学基金青年科学基金资助项目(41305076); 四川省教育厅科研基金资助项目(2017ZB0085)