【作者】 张少林； 龚佃利； 朱君鉴；

【Author】 Zhang Shaolin1 Gong Dianli2 Zhu junjian1 1 Shandong Meteorological Center, Jinan, 250031 2 Shandong Meteorological Institute, Jinan, 250031

【机构】 山东省气象中心； 山东省气象科学研究所；

【摘要】 利用实况观测和NCEP再分析资料,对2004年8月26～28日山东大暴雨过程进行了诊断分析。结果表明,本次大暴雨是0418号热带气旋在福建登陆后,其北伸倒槽与西风带弱冷空气结合所产生的热带气旋远距离暴雨。伴随登陆热带气旋生成的低空东南急流为暴雨输送了丰富的热量和水汽,而西风带弱冷空气的侵入对暖湿空气具有抬升作用,具有明显的暖锋锋生特征,是触发对流发展和暴雨产生的重要动力机制。暴雨主要分布在高能舌区,总能量是预报热带气旋远距离暴雨落区的一个重要预报指标。更多还原

【Abstract】 A diagnostic analysis is performed about the rainstorm occurred on 26-28 Aug 2004 in Shandong Province using the observational data and NCEP reanalysis data. The result shows that the heavy storm is caused by the interaction between 0418 tropical cyclone trough landed in Fujian Province and a weak cool front in the westerlies. The southeast low-air jet accompanying the tropical cyclone transports a plenty of heat and moisture for the storm.It is an important role in stimulates the convection that the weak cool air intrudes from the low-level and raise the warm and moisture air, thus leading to the heavy storm. The heavy rain mainly distributing in the tongue area of high energy,the total temperature is a key index to predict the fall area of rainstorm related to distant onland tropical cyclone.更多还原