本文对1978年7月受登陆台风倒槽影响的一次华北暴雨过程,通过对风场分解为 SW 和SE 分量后,进行了分析讨论。表明来自东南海洋上的水汽通量向着暴雨区的强烈辐合,是该暴雨过程的主要水汽源。在台风登陆后期,发现在台风倒槽辐合区中存在着强烈的潮湿 SE 气流与干冷的弱 NE 气 In this paper, a North China heavy rain course affected by typhoon inverted typhoon in July 1978 was analyzed and discussed after the wind field was decomposed into SW and SE components. This indicates that the strong convergence of water vapor flux from the southeastern ocean toward the heavy rainfall area is the main source of water vapor in this heavy rainfall. After the typhoon landed, it was found that there was a strong wet SE airflow and a dry and cold weak NE gas in the typhoon inverted trough convergence zone