L波段雷达资料在雾的边界层逆温特征中的应用

本文利用沙坪坝基本气象站2005~2010年逐日08,20时L波段雷达探空资料,对不同类型雾日期间边界层逆温特征进行分析。结果表明:从季节上来看雾日主要发生在秋冬季节,雾日期间不论是08时还是20时均有多层逆温存在,各类型雾日逆温温差均为08时大于20时,而逆温强度表现为20时大于08时,不论是雾日,轻雾日还是浓雾日,08时逆温层厚度都比20时要厚。总的来说,浓雾日的逆温层各要素都体现逆温特征较为明显的特点,逆温温差越大,逆温层厚度越厚,也就更容易形成浓雾,同时08时的各逆温要素均高于20时,08时逆温特征也更为明显,在这时段也就更容易形成雾。 

Application of L-band Radar Radiosonde data to the Boundary layer Inversion Characteristic Analysis in the Fog

This paper use the daily 08,20 L- band radar sounding data of Shapingba basic meteorological station from 2005 to 2010,and for different types of fog during the day boundary layer inversion characteristics were analyzed. The results showed that the fog mainly occurred in the fall and winter seasons,during foggy days whether 08 or 20 have temperature inversion in multilayer existence,various types of fog,the 08 inversion temperature difference are more than 20,and inversion temperature strength for 20 more than 08,regardless of fog days,the 08 inversion layer thickness are more than 20. In general,the inversion layer elements of dense fog are reflected inversion features more obvious characteristics,inversion temperature difference is big,inversion layer thickness thicker,also easier to form a thick fog,and 08 of the inversion elements were higher than 20,08 inversion characteristics are more obvious in this period,it is easy to form fog.