摘要
热带气旋(TC)登陆时中心最大风速会发生明显衰减,研究此时的风压关系对风暴潮模拟和预测具有重要意义。采用中国气象局上海台风研究所数据资料,对1949—2016年风压关系序列的一致性进行检验,登陆风压关系公式拟合及误差分析。结果表明:1970s后风压关系发生变异;新公式在计算登陆风速时要优于原公式,尤其是大风速情况下;相同气压下台风在近岸时风速明显小于大洋中,且登陆时风速越大衰减越剧烈。
The maximum sustained winds will be weaken remarkably when tropical cyclones lands.Therefore,it is of great significance to study the relationship of wind and pressure for storm surge simulation and prediction under such circumstances.The consistency of relevance of wind and pressure from 1949 to 2016 is tested and the formula fitting and error analysis are carried out based on the data from Shanghai Typhoon Research Institute of China Meteorological Administration.The results illustrate that there is obviously varying in relationship of wind and pressure since 1970s.The new fitting formula is superior to the original formula in calculating the landing wind speed,especially in the case of high speed wind.Meanwhile,the wind speed of typhoon over offshore is obviously lower than that in the ocean,and the greater the wind speed is,the severer the attenuation is.
作者
殷成团
张然
熊梦婕
章卫胜
张金善
YIN Chengtuan;ZHANG Ran;XIONG Mengjie;ZHANG Weisheng;ZHANG Jinshan(Nanjing Hydraulic Research Institute,Research Center of Climate Change of Ministry of Water Resources,Nanjing 210024,China;School of Water Resources and Hydropower Engineering,Wuhan University,Wuhan 430072,China;Department of Atmospheric Sciences,Nanjing University,Nanjing 210023,China)
出处
《气象科学》
北大核心
2019年第6期834-838,共5页
Journal of the Meteorological Sciences
基金
国家重点研发计划资助项目(2016YFC1402000)
中国—保加利亚科技合作委员会第15届例会项目(15-13)
关键词
热带气旋
登陆
风压关系
突变
公式拟合
tropical cyclone
landing
mutation
wind speed attenuation
formula fitting
作者简介
通信作者:张金善(ZHANG Jinshan).jszhang@nhri.cn。
