登陆广东北上路径热带气旋强降水的分布特征  

Characteristics of the Distribution of Severe Precipitation Resulting from Tropical Cyclones Heading Northward After Making Landfall in Guangdong

作　　者：龚月婷 程正泉[1] 杨诗琪 GONG Yue-ting;CHENG Zheng-quan;YANG Shi-qi(Meteorological Observatory of Guangdong Province,Guangzhou 510640)

机构地区：[1]广东省气象台,广东广州510640

出　　处：《广东气象》2022年第1期11-14,共4页Guangdong Meteorology

基　　金：广东省气象局科学技术研究项目(GRMC2018Q05,GRMC2019M05);广东省科技创新团队(GRMCTD202102)。

摘　　要：利用1981—2018年中国气象局上海台风研究所热带气旋最佳路径资料和国家基本气象站逐日降水资料,对登陆广东北上路径热带气旋活动及强降水特征进行统计分析。结果表明北上热带气旋从登陆时到登陆后48 h是陆地强降水产生的集中时段,登陆时24 h是陆地大暴雨最集中的时段。强降水从沿海向内陆逐渐减少,一般登陆后热带气旋持续时间越长越有利于强降水累积。北上热带气旋强降水更容易出现在气旋移动路径右侧,占到51%,且右侧型强降水影响范围最广。Based on the 1981-2018 best track data of tropical cyclones by Shanghai Typhoon Institute,China Meteorological Administration and daily rainfall data from national basic meteorological observation stations,this paper runs a statistical analysis of the characteristics of the activity and severe precipitation of the tropical cyclones making landfall in the province of Guangdong before heading to the north(abbreviated as“north-going TCs”hereafter).The result is shown as follows.Severe precipitation mainly occurs over land in the 48 h after the landfall of the north-going TC,and the period within the post-landfall 24 h is the time when most severe overland hard rain occurs.Severe precipitation decreases gradually from the coast to inland areas.Usually,the longer the north-going TC persists after landfall,the more favorable it is for severe precipitation to accumulate.It is more likely for severe precipitation resulting from the north-going TC to take place to the right of its moving path,taking up 51%,with rain coverage the most extensive.

关 键 词：气候学 登陆 热带气旋 北上路径 强降水 广东 

分 类 号：P46[天文地球—大气科学及气象学]