大连机场主导能见度与RVR关系的初步探究  

Preliminary Study on the Relationship between Dominant Visibility and RVR at Dalian Airport

作　　者：宋晓雪 于佳松 SONG Xiaoxue;YU Jiasong(Dalian Air Traffic Management Station,Dalian 116033,Liaoning,China)

机构地区：[1]中国民用航空大连空中交通管理站,辽宁大连116033

出　　处：《民航学报》2024年第3期104-107,共4页Journal of Civil Aviation

摘　　要：本文选取大连机场2012~2021年的整点数据进行统计分析,探究主导能见度与RVR的关系。主导能见度和RVR均能够反映视程大小,在数值上必然存在相关性和差异性。通过统计分析发现主导能见度与RVR的数值差异频率满足正态分布。根据这一规律,得出不同能见度下RVR达到各个标准值的概率,用以辅助对RVR的演变趋势预报。同时计算得到不同能见度下判断RVR数值异常的标准,能够更好地研判RVR数值是否异常。造成RVR数值异常的主要天气现象是雾、冻雾和降水天气现象。将统计分析的结果融入到实际观测工作中,能够向用户提供准确的RVR数值,保障飞行安全。This paper selects the hourly data of Dalian Airport during 2012 to 2021 for statistical analysis to explore the relationship between dominant visibility and RVR.Both dominant visibility and RVR can reflect the size of visual range,and there must be correlation and difference in numerical value.Through statistical analysis,it is found that the numerical difference frequency between dominant visibility and RVR meets the normal distribution.According to this law,the probability of RVR reaching each standard value under different visibility is obtained and used to assist in predicting the evolution trend of RVR.At the same time,the standard of judging RVR numerical anomaly under different visibility is calculated,and can better help determine whether RVR numerical anomaly is found.Fog,freezing fog and precipitation are the main weather phenomena causing RVR anomalies.Integrating the results of statistical analysis into the actual observation work can help provide accurate RVR value to users and ensure flight safety.

关 键 词：主导能见度 RVR 正态分布 

分 类 号：P427.2[天文地球—大气科学及气象学]