海河南系“96.8”特大暴雨的天气剖析

Synoptical Analysis of the Torrential Rain over the Southern Haihe River basin during August 1996

利用实测资料、Ｔ６３模式和云图资料对海河南系“９６．８”特大暴雨的天气学分析发现，特大暴雨发生在副高连续北跳和副热带环流强经向型的背景下；副高、台风、中低空急流和东北路径弱冷空气的协同作用，形成稳定的暴雨云团；海河南系的ＭＣＣ发展造成了暴雨连续发生。

The torrential rain over the southern Haihe river basin during August 1996 (‘96 8’ event) was analysed by using real time observation, T63 model and satellite cloud picture data. The results are as follows: the ‘96.8’ event occurred in the circumstance of the sub tropical high of continual two times northward jumpping and a strong meridional circulation in the sub tropical area, the sub tropical high, typhoon 9608, mid and low level jet and low level weaker cold air from the Northeast to the North China Plain co operated to generate a stable cloud cluster of the rainfall, the developing MCC over the southern Haihe river basin brought about the continuous torrential rain.