主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2011, Vol. 27 ›› Issue (1): 30-34.doi:

• 论文 • 上一篇    下一篇

四川广汉机场云的周期性变化特征

张 甦 张振州2 郝丽萍3  李子良2   

  1. 1. 中国民用航空飞行学院广汉分院,四川 广汉 618307;2.中国海洋大学海洋气象系,山东 青岛 266100;3. 四川省气象台,四川 成都 610071
  • 收稿日期:2010-10-08 修回日期:2010-11-23 出版日期:2011-02-28 发布日期:2011-02-28

Periodic characteristics of cloud at Guanghan airport in Sichuan province

ZHANG Su1  ZHANG Zhen-zhou2 HAO Li-ping3   LI Zi-liang2   

  1. 1. Guanghan Branch of Civil Aviation Flight University of China, Guanghan 618307, China; 2. Department of Marine Meteorology, Oceanography University of China, Qingdao 266100, China; 3. Meteorological Observatory in Sichuan Province, Chengdu 610071, China.
  • Received:2010-10-08 Revised:2010-11-23 Online:2011-02-28 Published:2011-02-28

摘要: 基于1986—1995年民航广汉机场气象台逐日逐时人工观测资料,利用统计分析,带通滤波方法、功率谱分析和小波分析等方法,分析了广汉机场云的周期性变化。结果表明:广汉机场主要受层积云Sc、积云Cu两种低云影响,且二者具有相反的日变化特征,碎层云Fs、雨层云Ns、碎雨云Fn等出现频率很低。广汉机场云量的变化明显具有60-120d的准季节周期、30-60d季节内周期和10-20d准双周振荡。

关键词: 低云, 周期性变化, 带通滤波, 功率谱分析, 小波分析

Abstract: Based on the hourly manual observational data from meteorological station at Guanghan airport from 1986 to 1995, the periodic characteristics of low cloud were analyzed by band-pass filtering method, power spectrum analysis method and wavelet analysis method. The results indicate that Guanghan airport is influenced by stratocumulus (Sc) and cumulus (Cu), and the daily variation characteristics of the two clounds are contrary. Other clouds such as stratus fractus (Fs), nimbostratus (Ns) and fracto-nimbus (Fn) seldom appear at Guanghan airport. Variations of the cloud cover show an obvious quasi-seasonal cycle of 60-120 day, an intra-seasonal cycle of 30-60 day and a quasi-biweekly oscillation cycle of 10-20 day.

Key words: Low cloud, Periodicity, Band-pass filtering, Power spectrum analysis, Wavelet analysis

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