【摘要】 利用ＭＭ４（ＰＳＵ／ＮＣＡＲ）模式，对１９９２年８月３１日２０时～９月１日２０时登陆台风暴雨过程进行了数值试验研究．结果表明：登陆台风的不连续北跳与西风槽和积云对流潜热反馈有关．倒槽南部雨区内积云对流的发展加大了对台风倒槽内的水汽、动量、热量等输送，使倒槽内降水增幅．积云对流潜热反馈对高低空急流以及台风的移动都有很大的影响更多还原

【Abstract】 Using MM4(PSU/NCAR)model, the torrential rain process of typhoon from 2000 BT. August 31 to 2000 BT. Sept. 1, 1992 was simulated and studied. The results show that the typhoon discontinuous northerly jump was related to the westerly trough and the feedback of cumulus convection latent heating, and the development of cumulus convection in the south rain area of inverted trough enhanced the transporting for the water vapor, momentum and heat from south to north. These processes would cause a great increasing of precipitation. The feedback of cumulus convection latent heating affects greatly the upper and lower level jets and the motion of the typhoon.更多还原