Test of a tropical limited area numerical prediction model including effect of real topography

In this paper, a tropical limited numerical prediction p.e. model in sigma coordinate is developed. The predicted variables are deviations from a rest reference atmosphere. This transformation is of benefit in reducing truncation error and guarantees computational stability after the very steep real topography is introduce into the model. The numerical tests with this model show that the large-scale obstacle of the Tibetan Plateau is not negligible in forecasting tropical systems like the South China Sea typhoon.