摘要
本文用国产卫星海洋二号散射计(HY-2A/SCAT)的数据对2012—2014年发生在西北太平洋的67个台风在台风最大风速、台风大小和结构方面进行探索性研究。结果表明,HY-2A/SCAT数据在对弱台风(风速小于20m/s)的最大风速估计整体偏高。用风速15m/s对应的半径(R_(15))定义台风大小并将台风分为大中小三个类别,得到了HY-2A/SCAT观测的台风大小的月平均分布,从台风数量的月分布直方图发现,中型台风数量最多且多发生于每年8—10月份。利用瑞金涡旋模型公式导出半径的计算公式,将HY-2A/SCAT海面风场数据相关参数代入公式求得相应半径值,与从HY-2A/SCAT数据中提取的半径R_(15)相结合进行对比分析,结果证明HY-2A/SCAT海面风场数据可以很好地应用于台风结构方面的研究。
Based on the data of HY-2A/SCAT,67 typhoons in the northwest Pacific were studied related with typhoon maximum wind speed,typhoon size and structural model.The results show that the HY-2A/SCAT data are overestimated in the maximum wind speed for weak typhoon(wind speed less than 20 m/s).The monthly mean distribution of typhoon size recorded by HY-2A/SCAT was obtained by using the radius corresponding to the wind speed of 15 m/s(R 15),and the typhoon was divided into large,middle and small three categories.The monthly distribution histogram of the three categories of typhoons was obtained,and the number of middle size typhoons was found to be the largest and occurred in Aug.to Oct.Based on the formula of Rankine vortex model,the formula of radius was deduced,and the corresponding parameters of HY-2A/SCAT data were substituted into the formula to obtain the corresponding radius value,which was compared with the radius R 15 extracted from HY-2A/SCAT data.The results show that the data of HY-2A/SCAT sea surface wind field can be well applied to the research of typhoon structure.
作者
孙如瑶
赵朝方
SUN Ru-Yao;ZHAO Chao-Fang(College of Information Science and Engineering,Ocean University of China,Qingdao 266100,China)
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2018年第A01期192-198,共7页
Periodical of Ocean University of China
基金
国家基金委-山东省联合基金项目(U1406404)
国家高技术研究发展计划项目(2013AA09A505)资助~~
