INFLUENCES OF IMPROVED SURFACE PARAMETERS ON T106 MODEL

Based on the data of soil humidity, vegetation of ISLSCP and the snow cover, SST of NOAA through modifying the surface parameters of T106 model and surface flux scheme, the influences of these surface parameters on the forecast effcet of T106 model are studied. The experiments indicate that the surface parameters and new scheme could improve the forecast of T106 model, espcially the forecast of subtropical high. For example, the forecasts of experiment schemes for the west-extending ridge point index, area index and intensity index of subtropical high are better than those of operational prediction.