WRF-POM耦合模式对一次海雾过程的模拟试验

Simulation of a sea fog event using a WRF-POM model

采用中尺度大气模式WRF和区域海洋模式POM构造了一个中尺度海气耦合模式。以2008年7月7—11日一次大范围黄海海雾过程为研究对象,将该耦合模式和单独的WRF模式进行对比试验。模拟结果显示:与单独使用WRF模式相比,耦合模式能有效改进海雾的模拟结果,特别是对于海雾发展与演变的模拟更接近于实况,这种改进效应主要源自于耦合模式中对于SST的描述更为精细。

In order to investigate the impact of sea surface temperature （SST） on sea fog event,a mesoscale coupled air-sea model is developed based on the mesoscale model WRF （Weather Research and Forcasting） and the regional POM （Princeton Ocean Model）.In this study,two experiments of a heavy sea fog event over the Yellow Sea from 7-11 July,2008 are performed; one used the coupled model and the other only used WRF model.The resuits show that the coupled model can greatly improve the simulation of sea fog coverage compared to the WRF model.The simulated pattern of fog calculated from the coupled model agrees well with the sea fog region identified from the visible satellite imagery.This improvement effect is mainly derived from a more elaborate description of the SST from the coupling model.