A BOUNDARY NESTING SCHEME OF LIMITED AREA MODEL NESTED WITH GLOBAL MODEL FOR FORECASTING TROPICAL CYCLONE OVER SOUTH CHINA SEA

Today, the nested model is used widely. The effect and role of each nested variate is analyzed in this paper. It is found that the forecast could benefit by nesting part of the variates and the effect of each of the variates may be different. Therefore, only the effectual variates are chosen for the nesting. According to this finding, a scheme is suggested and applied to the limited area mode (TL10) nested with global spectral mode (T63) for forecasting tropical cyclones over the South China Sea. A few numerical prediction tests show that this scheme is reasonable and efficient.