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中文摘要：
按500hPa形势，盐城市大暴雨的天气类型可划分为台风型和副高边缘型两大类。发生大暴雨时一般副高较强，高空有低槽或切变线，有明显的冷暖气流辐合区。系统深厚，高、中、低层配合较好。地面天气系统主要有冷锋、静止锋、气旋、低压倒槽。
英文摘要：
According to the circulation situation on 500hPa, the synoptic type of heavy rainstorm occurred in Yancheng city can be divided to two types as typhoon-type and edge-type of subtropic high. Normally, during the heavy rainstorm, the subtropic high should be stronger and trough or shear line often exists at upper level, meantime, the convergence zone formed by cold and warm stream is also obvious. At the same time, it also showed that synoptic systems are deep at vertical direction and the system, respectively, located at low, middle and high level is consistent with each other. On the other hand, the main surface weather systems are composed of the cold front, stationary front, cyclone, and inverse trough of low pressure.
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