摘要
利用2009-2018年新津机场气象台地面逐小时观测资料,结合新津机场飞行起降标准和气象预报需求,分别对能见度低于1.8 km、1 km和0.8 km 3个等级进行统计分析。结果表明:能见度低于1.8 km天气逐年减少,能见度低于1 km天气呈现3-4年周期性变化,能见度低于0.8 km天气年变化幅度小。各级低能见度冬季出现日数最多、持续时间长,其次为秋季和春季,夏季出现日数最少、持续时间最短。日变化呈现“先减少,后增加”,能见度低于1 km和0.8 km变化集中在08-13时。
By using the hourly ground-observation data from 2009 to 2018,combined with flight take-off and landing standard and meteorological forecast requirement of Xinjin airport,this paper analyzed the prevailing visibility value less than 1.8km,1km and 0.8km.The results show that the annual variation of the prevailing visibility less than 1.8km is gradually less,the prevailing visibility less than 1km presented a 3-4year cyclical change,and the prevailing visibility less than 0.8km change small.In addition,the low visibility appears in winter with the most days and long duration,followed by autumn and spring,and the least days and the shortest duration appear in summer.The diurnal variation of low visibility shows climb up and then decline,and the prevailing visibility less 1km and 0.8km concentrated at 08-13.
作者
穆玉娇
孙羡
Mu Yujiao;Sun Xian(Civil Aviation Flight University of China,Chengdu 611431 Sichuan China)
出处
《中国民航飞行学院学报》
2022年第4期43-47,共5页
Journal of Civil Aviation Flight University of China
关键词
低能见度
雾
天气现象
Low visibility
Fog
Weather phenomenon
