西安机场大雾气候特征及气象条件分析

利用2013年1月1日至2022年12月31日西安咸阳国际机场大雾的METRA报文及SPECI报文数据,统计分析西安咸阳国际机场大雾天气的生消机制,归纳出重要预报因子,为航班安全起降提供更加优质的气象服务。结果表明,西安咸阳国际机场大雾天气具有明显的月际与日际变化,秋冬季多发,春夏季节则较少;雾大多数发生于3:00~9:00,消散于8:00~11:00,持续时间以0~3h为主;大雾发生时湿度较大,多为东北风与西南风。

Based on the METRA message and SPECI message data of heavy fog at Xi’an Xianyang International Airport from January 1,2013 to December 31,2022 at Hong Kong Underground Observatory,the mechanism of heavy fog weather at Xi’an Xianyang International Airport is analyzed,and the important forecast factors are summarized,so as to provide better meteorological services for flight safety.The results show that the heavy fog weather at Xi’an Xianyang International Airport has obvious inter-monthly and inter-day changes,with more in autumn and winter and less in spring and summer.The fog mostly occurs at 3:00-9:00,dissipates at 8:00-11:00,and lasts for 0-3h.The humidity is large when the fog occurs,mostly northeast wind and southwest wind.