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利用2015年雷雨季虹桥机场各类气象观测数据,讨论分析了典型的雷雨季降水性低云的航空气象要素演变特征。研究表明:2015年雷雨季,降水持续时长为1 h以内的降水过程最多,但降水持续时长为1 h以内时,低云生成的概率最低。低云生成时的云高与降水持续时长及低云生成时的相对湿度和风速有很高的相关性,均通过0.01的显著性检验,表明降水持续时间越长,低云生成时的云高越低;相对湿度越高,低云生成时云高越低;风速越大,低云生成时云高越高。
Using the meteorological observation data of 2015 Thunderstorm Quarter Hongqiao Airport, the evolution characteristics of aeronautical and meteorological elements of a typical low precipitation cloud in the thunderstorm season are analyzed and discussed. The results show that in the thunderstorm season of 2015, the precipitation with the duration of 1 h is the most, while the duration of the precipitation is within 1 h, the probability of occurrence of the low cloud is the lowest. The cloud height at the time of low cloud generation was highly correlated with the duration of precipitation and the relative humidity and wind speed at the time of low cloud generation, all of which passed the significance test of 0.01, indicating that the longer the duration of precipitation, the cloud height The lower the relative humidity is, the lower the cloud height is when the low cloud is generated. The higher the wind speed is, the higher the cloud height is when the low cloud is generated.