【摘要】 气旋是产生大──暴雨的主要天气系统之一，根据青岛地区产生大──暴雨的特点，将气旋大──暴雨划分为三个阶段；根据气旋发生前700hPa影响系统和低层锋区上冷暖锋形成的方式，将气旋分为焊接类气旋和波动类气旋。更多还原

【Abstract】 Cyclone is the main weather system proceduing heavy rainAlrainstorm. The devel-opmnt of cyclonic heavy rain-rainstorm can be divided into three stages according to thefeatures of generation of heavy rain-rainstorm over Qingdao area. Additionally, the cy-clone is classificd as weld cyclone and wave cyclone based on the patterns of influencesystem of 700hPa and coldwarm frontogonesis over frontal zone at low level prior to oc-currence of cyclone更多还原