摘要
将1954—2019年对深圳风雨影响排名前10%的台风称为高影响台风,并按风、雨的影响分为降雨高影响台风和大风高影响台风。通过统计降水和风速等气象要素的时空分布特征,对比大风高影响台风和降雨高影响台风的强度、位置、路径类型及路径点分布高频区(关键区)等异同点。结果表明:(1)大风高影响台风以西北移动近距离影响深圳的路径为主,深圳西南方150 km沿海和海域为关键区。(2)降雨高影响台风影响路径复杂,有西北移动、东北至偏北以及偏西移动3类路径,分别在珠江口西侧、深圳附近、粤北存在3个关键区,关键区的确定为高影响台风的预报预警提供一定的参考。
High-impact typhoons are defined as those that rank within the top 10%for their roles in bringing winds and rains to Shenzhen from 1954 to 2019 and they are further identified as typhoons with high rain impact and high wind impact.By examining the spatiotemporal characteristics of the meteorological elements of precipitation and wind speed,this work compares the typhoons with high wind and rain impacts for the similarity and difference in intensity,location,path type and high-frequency(key)distribution zone of path points.The result is shown as follows.(1)For the typhoon with high wind impact,it mainly moves to the northwest and affects Shenzhen within short distance and the offshore area 150 km southwest of the city is the key zone.(2)For the typhoon with high rain impact,it is with multiple paths that go to the northwest,northeast and west,with three key zones at the west side of the estuary of the Pearl River,at the proximity of Shenzhen and in the northern part of Guangdong.The determination of these key zones is of some degree of reference to the forecasting and pre-warning of the high-impact typhoons.
作者
郑群峰
张超
胡霄
罗欣
贺佳佳
李超
ZHENG Qun-feng;ZHANG Chao;HU Xiao;LUO Xin;HE Jia-jia;LI Chao(Meteorological Observatory of Shenzhen,Shenzhen 518040;National Climate Observatory of Shenzhen,Shenzhen 518040;Pre-warning Information Release Center for Explosive Events of Shenzhen,Shenzhen 518040;Meteorological Service Center of Shenzhen,Shenzhen 518040;Shenzhen Key Laboratory of Severe Weather in South China,Shenzhen 518040)
出处
《广东气象》
2020年第3期14-18,共5页
Guangdong Meteorology
基金
广东省气象局科研项目(GRMC2019M48)。
关键词
气候学
台风
暴雨
大风
高影响台风
关键区
深圳
climatology
typhoon
heavy rain
high wind
high impact
key zone
Shenzhen
