Study on the Prediction Method of Heavy Fog along Chengdu-Leshan Express Way

By using index judging and nonlinear statistical SVM methods,the changing characteristics of heavy fog along the Chengdu-Leshan express way is studied in this paper.Furthermore,the prediction of heavy fog possibility and the visibility level in short prediction and now-casting prediction models is formed.With experience revising the last results of the model,the final refined objective weather heavy fog forecasting will be gotten.Using WRF numerical model,the simulation of a typical lasting heavy fog weather process in 2008 has done,the experiment results show that this method is good for the heavy fog prediction.In addition,the method is difficult for operational work,there are more researches are needed.