Seconely, using Japanis facsimile data, and through correlation ana lysis, four predictors are sifted out with clear physical meaing and fai- rly good effect .

• 然后,从日本气象厅发布的数值预告传真图资料中,通过相关普查,筛选出物理意义清楚、效果较好的四个预报因子。