宁波栎社机场能见度变化特征分析  

Characteristics of Visibility Variation in Ningbo Lishe Airport

作　　者：陶俞锋 赵成华 刘耀杰 奴开 Tao Yufeng;Zhao Chenghua;Liu Yaojie;Nu Kai(Ningbo Air Traffic Management Station of CAAC,Ningbo 315154 Zhejiang China)

机构地区：[1]中国民用航空宁波空中交通管理站,浙江宁波315154

出　　处：《中国民航飞行学院学报》2024年第2期41-45,共5页Journal of Civil Aviation Flight University of China

摘　　要：利用宁波栎社机场1991年1月-2020年12月的能见度观测资料,分析了机场能见度的日变化、年变化和年际变化特征。结果表明:宁波机场近30年来平均能见度变化呈浅“U”型,1991-2004年总体为下降趋势,2005年后开始缓慢上升;夏季平均能见度最好,春、秋季较接近,次之,冬季最差。各级能见度<800 m、<1500 m和<3000 m的年均日数分别为18.3天、58.5天和133.4天,且呈下降趋势。累年各月逐时能见度<800m出现的频率主要分布在11月-次年4月份的后半夜至上午;能见度<1500 m在11月-次年2月份全天均可出现,频率高值中心主要分布在23-01时;能见度<3000 m在11月-次年2月清晨时刻出现频率达20%以上,而7-9月份出现频率明显降低,基本在10%以下。影响宁波机场能见度<1 km的天气现象有雾、雨、雪三种,其中最主要的是雾。Based on the visibility observation data of Ningbo airport from January 1991 to December2020,this paper analyzes the daily,annual and interannual variations of visibility.The results show that:In recent 30 years,the average visibility of Ningbo airport shows a shallow"U"shape,with a downward trend from 1991 to 2004 and a slow rise after 2005.Average visibility is best in summer,close in spring and autumn,and worst in winter.The average annual days of visibility<800m,<1500m and<3000m are respectively 18.3,58.5 and 133.4 days,and show a decreasing trend.Hourly visibility<800m occurs frequently from late night to morning in November to April of the next year.Visibility<1500m can be seen all day from November to February of the next year,and the high frequency centers are mainly distributed between 23 UTC and 01 UTC.Visibility<3000m occurs more than 20%in the early morning hours from November to February of the next year,while the frequency of visibility decreases significantly from July to September,basically below 10%.Three weather phenomena which affect the low visibility of Ningbo airport are fog,rain and snow.Especially,fog is the most important factor.

关 键 词：宁波机场 能见度 频率 特征分析 

分 类 号：V321.223[航空宇航科学与技术—人机与环境工程]