本文利用中尺度数值模式MM5与三维辐射雾模式相耦合,分别对重庆和长沙地区的一次冬季辐射雾过程进行了模拟研究。结果表明,中尺度数值模式与三维辐射雾模式的单向耦合可以较好地模拟出雾的生消演变过程,以及雾的浓度、地理分布特征、形成和维持。由此可以说,利用耦合模式开展雾的预报是可行的。
A 3D fog model coupling with the MM5 is used to simulate the local winter radiation fogs in Chongqing and Changsha respectively. The results show that the unilaterally coupled model can reproduce the circulation and the heavy radiation fogs,especially,the occurrence,location,dissipation,and concentration of the fogs. So it is feasible to apply the 3D fog model,coupled with the MM5,in the forecast of fog.