During SST raise stage in the equatorial central and eastern Pacific and North Pacific westerly drift region, serious droughts and floods easily happen in the North China Plane, respectively.

• 在赤道中东太平洋海温与北太平洋西风漂流区海温处于明显正距平阶段 ,华北平原地区易分别发生严重干旱与雨涝。