Preliminary Study on the Relationship between Dominant Visibility and RVR at Dalian Airport
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.
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万方数据
