气象与环境学报2011，Vol.27Issue(1)：30-34,5.
四川广汉机场云的周期性变化特征
Periodic characteristics of cloud at Guanghan airport in Sichuan province
摘要
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 spectram 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 30-40 day and a quasi-biweekly oscillation cycle of 10-20 day.关键词
低云/周期性变化/带通滤波/功率谱分析/小波分析Key words
Low cloud/ Periodicity/ Band-pass filtering/ Power spectrum analysis/ Wavelet analysis分类
天文与地球科学引用本文复制引用
张甦 ,张振州,郝丽萍,李子良..四川广汉机场云的周期性变化特征[J].气象与环境学报,2011,27(1):30-34,5.基金项目
国家自然科学基金(40775069)资助. （40775069）
