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[1]胡慧敏,吴 薇,杜 冰.四川省1969-2018年日照时数变化规律及未来趋势分析[J].成都信息工程大学学报,2023,38(05):610-614.[doi:10.16836/j.cnki.jcuit.2023.05.017]
　HU Huimin,WU Wei,DU Bing.Analysis of Sunshine Hours Change Law and Future Trend in Sichuan Province from 1969 to 2018[J].Journal of Chengdu University of Information Technology,2023,38(05):610-614.[doi:10.16836/j.cnki.jcuit.2023.05.017]
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四川省1969-2018年日照时数变化规律及未来趋势分析

成都信息工程大学学报[ISSN:1006-6977/CN:61-1281/TN] 卷: 38 期数: 2023年05期 页码: 610-614 栏目: 大气科学 出版日期: 2023-09-10
Title:
Analysis of Sunshine Hours Change Law and Future Trend in Sichuan Province from 1969 to 2018
文章编号:
2096-1618(2023)05-0610-05
作者:
胡慧敏1; 2;  吴 薇1; 2;  杜 冰1; 2
(1.四川省气象探测数据中心，四川 成都 610072; 2.高原与盆地暴雨旱涝灾害四川省重点实验室，四川 成都 610072)
Author(s):
HU Huimin1; 2;  WU Wei1; 2;  DU Bing1; 2
(1.Sichuan Meteorological Observation and Data Center, Chengdu 610072, China; 2.Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province, Chengdu 610072, China)
关键词:
日照时数;  变化特征;  突变;  未来趋势;  空间分布
Keywords:
sunshine hours;  dynamic characteristics;  sudden changes;  future trend;  spatial distribution
分类号:
P412.14
DOI:
10.16836/j.cnki.jcuit.2023.05.017
文献标志码:
A
摘要:
为更好地分析四川省长时间序列人工观测日照时数时空变化规律及未来变化趋势，利用四川省148个气象站点1969-2018年逐月日照时数资料，采用气候倾向率、M-K突变检验、重标极差分析、经验正交函数分析等进行了讨论和分析。结果表明:四川年平均日照时数为1459.6 h，整体随时间序列呈下降趋势，每10年减少28.7 h; 平均日照时数夏季>春季>秋季>冬季; 除春季外，其余季节和年际日照时数最大值均出现于20世纪70年代; 日照时数在1979年发生突变，由日照偏多阶段转为偏少阶段; 四川省日照时数序列未来变化趋势会在一定时间内与过去一致，春、夏、秋、冬季和年际的平均循环长度分别是6年、8年、5年、8年、9年; 四川省日照时数主导分布类型为“一致型”，表现为全省一致偏少。
Abstract:
To analyze the spatio-temporal variation of sunshine duration and its future trend in Sichuan Province, the monthly sunshine duration data of 148 meteorological stations in Sichuan Province during 1969-2018 were analyzed through climate tendency rate, M-K mutation test, re-scale range analysis and empirical orthogonal function analysis. The results show that the annual average sunshine duration in Sichuan is 1459.6 h, which shows a decreasing trend with time series, decreasing 28.7 h every 10 years. The sequence of average sunshine duration from high to low is: summer, spring, autumn, winter. Except spring, the maximum number of seasonal and interannual sunshine hours appeared in the 1970 s. The number of sunshine hours decreased sharply in 1979, and since then, the sunshine has entered the stage of less sunshine. The future variation trend of the sunshine duration series in Sichuan Province will be consistent with the past in a certain period time, and the average cycle length of spring, summer, autumn, winter and interannual is 6, 8, 5, 8 and 9 years, respectively. The dominant distribution type of sunshine hours in Sichuan Province is "consistent type", which is less consistent in the whole province.

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备注/Memo

收稿日期:2022-11-03
基金项目:高原与盆地暴雨旱涝灾害四川省重点实验室科技发展基金资助项目(SCQXKJQN202121)

更新日期/Last Update: 2023-09-10