The Progress of Fog Forecast Operation in China

This paper recalls the situation and progress of fog forecasting operation in China. Three stages are experienced: the experiential forecast stage， the subjective forecast combined with the objective prediction stage， and the fne fog monitoring and forecasting stage. It points out that the developmental direction of fog forecast is to establish a regional mode in high resolution system containing advanced data assimilation. At present, it still needs to be developed the explained application method to the numerical prediction products. The experiences of forecasters still play an important role on improving the forecasts of some disastrously heavy fog events.