1964—2013年登陆广东的热带气旋对揭阳天气的影响  

Effect of Tropical Cyclones Landing in Guangdong from 1964 to 2013 on the Weather of Jieyang

作　　者：林巧美 陈映强 管习权 

机构地区：[1]揭阳市气象局,广东揭阳515599

出　　处：《广东气象》2015年第6期27-30,共4页Guangdong Meteorology

摘　　要：分析1964-2013年各路登陆广东（包括4个登陆香港）的热带气旋（TC）对揭阳天气的影响，结果表明：东路登陆的TC对揭阳市影响最严重，日最大雨量可达暴雨到大暴雨，惠来普遍可出现比TC中心附近风力小1—2级的风，其它地区可出现比TC中心附近风力小3～5级的风；中路登陆的TC，揭阳市普遍会有暴雨，日最大雨量市区揭西出现暴雨概率最大，普宁惠来出现大雨概率最大，揭阳会出现3～6级的风；西路登陆的TC，揭阳市普遍有大到暴雨和出现3～4级的风，当粤东处于副高边缘和TC外围环流共同影响时，风力可达4—6级，给揭阳市带来严重影响的风暴潮增水，一般TC大多来自西北太平洋，揭阳位于TC前进方向的右半圆，登陆时间在农历十五到十八日（天文大潮期），增水更为有利。In terms of eastward, middle and westward paths relative to the sites of landing, the effect of tropical cyclones （TCs） making landfall in Guangdong （ including four that landed in Hong Kong） from 1964 to 2013 is studied on the weather of Jieyang City. The result is shown as follows. The TCs of the eastward path have the most significant impact on the city with the maximum daily rainfall reaching the level of heavy to very heavy rain. While the wind is one to two grades smaller than the area near the eye in Huilai, it can be three to five grades smaller than it in other areas. For the TCs landing by the middle path, Jieyang has widespread rain with the probability of heavy rain being the largest in the urban district （Jiexi） and the probability of less heavy rain is the maximum in Puning and Huilai, and winds of Grade 3 to 6 can happen in the city. With the westward-path TCs, the rain ranges from being less heavy to heavy and the wind is generally at Level 3 to 4. When the eastern Guangdong is jointly affected by the edge of the subtropical high and airflows at the periphery of TCs, the wind can be as strong as Grade 4 to 6, bringing water increment in the form of storm surge that has serious consequences. Usually, most of the TCs come from the northwestern Pacific and Jieyang is located at the right - hand half - circle of its moving direction. The increment of water is more likely to happen if the landing takes place on the 15th to 18th day of a lunar month （ during main astronomical tides）.

关 键 词：气候学 热带气旋 暴雨 大风 风暴潮 揭阳市 

分 类 号：P46[天文地球—大气科学及气象学]