最大风速半径对台风浪计算效果的比较研究  

The influence of radius of maximum wind on typhoon waves

作　　者：房伟[1] 陈国平[1] 赵红军[1] 严士常[1] 

机构地区：[1]河海大学港口海岸及近海工程学院海岸灾害与防护教育部重点实验室,南京210098

出　　处：《水道港口》2017年第6期574-580,共7页Journal of Waterway and Harbor

摘　　要：依据联合台风警报中心(JTWC)发布的2001~2015年西北太平洋热带气旋最佳路径数据集,分析给出西北太平洋热带气旋最大风速半径之于地理纬度和中心低压的参数化公式。采用5种最大风速半径公式计算最大风速半径,并基于Myers气压场模型和第三代海浪模型SWAN,对发生于东中国海的5场台风浪个例过程进行数值模拟研究,将模拟结果与实测资料进行对比分析。结果表明:台风浪大浪区持续时间和分布的范围与最大风速半径正相关;采用文章拟合公式的台风浪数值模拟结果较实测值的线性回归斜率、平均偏差和最大值偏差均较小,文章拟合公式关于个例台风浪的计算效果较好。Based on the Northwest Pacific cyclone data from 2001 to 2015,which was released by JTWC,a new parametric formula for radius of maximum wind（ RMW） was presented. In order to evaluate the influence of RMW on the predictions of typhoon waves,five typhoon cases were selected and the computations for typhoon waves were performed with the SWAN model driven by the Myers parametric wind model,where the RMW was calculated with five empirical formulas. The comparisons between simulated results and observed data indicate that the linear regression slope,the mean deviation and the maximum deviation of the results calculated with the present formula are smaller than the others. The results show that the duration and distribution of typhoon waves are positively correlated with RMW,and the typhoon waves can be simulated well with the present formula.

关 键 词：最大风速半径 台风浪 SWAN模型 

分 类 号：P731.22[天文地球—海洋科学]