| 民航广汉机场气象能见度的周期性变化特征的初步分析 |
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| 引用本文： | 张甦,郝丽萍,李子良,梁燕芳.民航广汉机场气象能见度的周期性变化特征的初步分析[J].高原山地气象研究,2009,29(3):69-72. |
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| 作者姓名： | 张甦 郝丽萍 李子良 梁燕芳 |
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| 作者单位： | 1. 中国民航飞行学院广汉分院, 广汉 618307; |
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| 基金项目： | 国家自然科学基金(40775069)项目 |
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| 摘 要： | 基于民航广汉机场1986~1995年每日逐时气象能见度的观测资料,利用相关性分析,功率谱分析、带通滤波,以及小波分析等方法,分析和研究了广汉机场气象能见度的周期性变化特征。研究结果表明,机场能见度的变化与机场相对湿度和低云量呈显著负相关,与机场地面温度和地面风速呈正相关特征。广汉机场气象能见度的变化明显具有10~20d的准双周振荡特征和30~50d准周期性季节内振荡特征。
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| 关 键 词： | 能见度 功率谱分析 带通滤波 小波分析 相关性分析 |
| 收稿时间： | 2009-05-02 |
Periodic Characteristics of Fog Visibility in Guanghan Airport |
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| ZHANG Su,HAO Liping,LI Ziliang,LIANG Yanfang.Periodic Characteristics of Fog Visibility in Guanghan Airport[J].Plateau and Mountain Meteorology Research,2009,29(3):69-72. |
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| Authors: | ZHANG Su HAO Liping LI Ziliang LIANG Yanfang |
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| Institution: | 1. Guanghan Flying School, China Civil Aviation Flying College, Guanghan, 618307;2. Meteorology Bureau of Chengdu, Chengdu, 610072;3. Ocean University of China, Qingdao, 266100 |
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| Abstract: | Based on the hourly diurnal meteorological visibility data of Guanghan airport from 1986 to 1995, the periodic variation characteristics of the visibility, such as diurnal, monthly, seasonal and intra-seasonal variations, are studied, in which the correlation analysis method, power spectrum analysis, Band-pass filter, Wavelet analysis method are used.The results indicate that there is a significant inverse correlation between the variation of visibility of Guanghan airport and the relative humidity as well as the low cloud cover.However, the visibility becomes good when the temperature and wind speed increase.What's more, the periodic variations of quasi 2-weeks oscillations (10-20d) and quasi intra-seasonal oscillations (30-50d) have important implications for understanding the development and persistence of low visibility. |
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