【摘要】 １９９４年７月１２－１３日北京地区的大暴雨是西风槽、副热带高压及台风低压共同作用的结果，在西风槽与台风低压的相互作用中，低空东南急流提供了充分的动力、热力和水汽条件，作用更加显著。更多还原

【Abstract】 The torrential rain on July 12-13,1994 in Beijing is resulted from the interaction of westerly trough,sub-tropical high and typhoon low.The lower east south jet provided sufficent dynamics,thermodynamics and moisture condition. The interaction is very significant.更多还原