海洋飞沫对热带气旋影响的数值模拟研究——以“鲇鱼”台风为例  

Numerical Simulation Study of Sea Spray’s Effect on Tropical Cyclone:A Case Study of Typhoon“Megi”

作　　者：张佳琳 张文清 夏浩峰 管长龙 Zhang Jialin;Zhang Wenqing;Xia Haofeng;Guan Changlong(College of Oceanic and Atmospheric Sciences,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学海洋与大气学院,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2021年第10期12-21,共10页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(41906014);中央高校基本科研业务费专项(201913018)资助。

摘　　要：本文在海-气-浪-沉积输运耦合模式COAWST(The Coupled-Ocean-Atmosphere-Wave-Sediment Transport Modeling System)中,添加包含海洋飞沫效应的拖曳系数CD和热焓交换系数CK参数化方案,探讨海洋飞沫的动力学和热力学效应对热带气旋的影响。数值实验结果表明,海洋飞沫效应可有效改进热带气旋的路径模拟结果;只考虑海洋飞沫动力学效应时,对海表动量通量的影响甚少,可使向上感热通量和潜热通量略有增加;同时考虑海洋飞沫动力学和热力学效应时,可使海表动量通量略有增加,并使向上感热通量和潜热通量显著增加,海洋飞沫主要通过热力学效应有效增加热带气旋强度,对热带气旋强度模拟的改进效果相比于仅考虑海洋飞沫动力学效应更显著。Sea spray has important influence on the evolution of tropical cyclone.The influence of sea spray in the numerical simulation and prediction of tropical cyclones is not ignorable.In order to explore the kinetic and thermodynamic effects of sea spray on tropical cyclone,the drag coefficient(CD)and the enthalpy transfer coefficient(CK)with sea spray’s effects were included in The Coupled-Ocean-Atmosphere-Wave-Sediment Transport Modeling System(COAWST).The numerical results show that,the effect of sea spray can effectively improve the simulation results of tropical cyclone path.When only the kinetic effect of sea spray is considered,the momentum flux at the surface of sea is little affected,and the upward sensible heat flux and latent heat flux are slightly increased.When kinetic and thermodynamic effects of sea spray is considered at the same time,the momentum flux is slightly increased,the upward sensible heat flux is increased,and the latent heat flux is significantly increased,the intensity of tropical cyclone is significantly enhanced,mainly due to the thermodynamic effect.Considering the kinetic and thermodynamic effects of sea spray at the same time is more effective than considering the kinetic effects of sea spray in improving the intensity simulation of tropical cyclone.

关 键 词：海-气-浪-沉积输运耦合模式 热带气旋 海洋飞沫 动量通量 向上感热通量 潜热通量 

分 类 号：P714.2[天文地球—海洋科学] P732.6