【作者】 江敦双；

【Author】 JIANG Dunshuang (Qingdao Weather Station,Qingdao,266003,Shandong Province,China)

【机构】 青岛市气象台；

【摘要】 以2011年两个影响山东半岛的台风"米雷"和"梅花"为研究对象,首先对比分析两次台风暴雨过程在强度和落区上的相似及差异。分析表明,这两次台风过程都给山东半岛带来了暴雨天气,最大降水中心都出现在台风中心左侧2个经度内和500hPa上θse大于72℃的高能区内。两个台风的强度、移速、结构、外部环境场等多个方面的不同造成了具有不同特点的台风暴雨过程。结果表明:台风暴雨与台风结构、水汽输送、地形密切相关。"米雷"强度明显弱于"梅花",但两者强降水强度和落区却相似,主要是因为"米雷"在荣成市登陆后西行缓慢,有利于降水的增加和持续;山东半岛东部的牙山、艾山、昆嵛山、大泽山、崂山等山地地形也对暴雨增强起到了促进作用。更多还原

【Abstract】 A study was carried out on two typhoons Meari and Muifa,which affected Shandong Peninsula in 2011. Firstly,the similarity and difference between the two typhoon-induced rainstorms were compared. It was pointed out that both of them brought torrential rain,and the maximum centers of rainfall were located in the areas within a two-degree longitude radius of the left side of typhoon center and the areas where the equivalent potential temperature became larger than 72℃ in the 500-hPa geopotential height field. Secondly,with differences in intensity,moving speed,structure of typhoon,and external environment field,the two typhoon-related rainstorms had different features. The results show that typhoon-related rainstorms were closely related to the structure of typhoon itself,moisture transport,and mesoscale terrain. Although Meari was weaker than Muifa in intensity,the area and intensity of the two typhoon-related rainstorms were similar,because after making landfall,the slower westward movement of Meari typhoon was conducive to precipitation. Beyond that,the mountainous terrain in eastern Shandong Peninsula,such as Yashan,Aishan,Kunyushan,Dazeshan,Laoshan etc,is also a favorable factor for raining.更多还原