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中国农学通报 ›› 2019, Vol. 35 ›› Issue (12): 95-99.doi: 10.11924/j.issn.1000-6850.casb18090051

所属专题: 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

中山市日平均气温时间序列的周期性与混沌性分析

林晓剑   

  1. 中山市气象局
  • 收稿日期:2018-09-11 修回日期:2018-11-30 接受日期:2018-12-04 出版日期:2019-04-26 发布日期:2019-04-26
  • 通讯作者: 林晓剑
  • 基金资助:
    国家自然科学基金(41271545)。

Daily Mean Temperature Time Series in Zhongshan: Periodicity and Chaos Analysis

  • Received:2018-09-11 Revised:2018-11-30 Accepted:2018-12-04 Online:2019-04-26 Published:2019-04-26

摘要: 用广东省中山市1955-2017年日平均气温时间序列分析周期与混沌性质。结果表明,功率谱为363d左右的年周期变化,为周期吸引子;是太阳直射点在南北移动导致。在滤去频率范围为0~0.005/d的年周期变化信息以后,功率谱呈连续谱;最大Lyapunov指数是正的,关联维数为10.1,表明高频气温变化部分具有混沌性。

关键词: 苦荞麦, 苦荞麦, 农艺性状, 相关分析, 主成分分析

Abstract: The paper aims to study the temporal evolution of temperature. The author analyzed the periodicity and chaos properties of daily mean temperature time series in Zhongshan, Guangdong during 1955-2017 by using nonlinear dynamic method. The results showed that: the power spectrum of temperature was a periodic variation of about 363 days, which was a periodic attractor caused by the direct solar point moving from north to south; after filtering out the information of annual periodic variation in the frequency range of 0 to 0.005/d, the power spectrum was continuous; the maximum Lyapunov exponent was positive with the correlation dimension 10.1, indicating the variation of high frequency temperature was chaotic.