Effect of Sea Spray on the Numerical Simulation of Super Typhoon ‘Ewiniar’  

作　　者：ZHENG Jing FEI Jianfang DU Tao WANG Yuan CUI Xiaoyan HUANG Xiaogang Qiming 

机构地区：[1]Institute of Meteorology, PLA University of Science ＆ Technology, Nanjing 211101, P. R. China [2]College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, P R. China [3]Department of Atmospheric Science, Nanjing University, Nanjing 210093, P R. China [4]Institute of Aeronautical Meteorology, Air Force Academy of Equipment, Beijing 100085, P. R. China [5]Meteorology Observation, Navy ofNo.91774, Shanghai 200083, R R. China

出　　处：《Journal of Ocean University of China》2008年第4期362-372,共11页中国海洋大学学报（英文版）

基　　金：the National Natural Science Foundation of China (No 40333025);the Open Project of Shanghai Typhoon Institute of China Meteorological Administration (No 2006STB02) in combination with the Doctoral Visit Project of Ocean University of China

摘　　要：To study the potential effect of sea spray on the evolution of typhoons,two kinds of sea spray flux parameterization schemes developed by Andreas (2005) and Andreas and Wang (2006) and Fairall et al. (1994) respectively are incorporated into the regional atmospheric Mesoscale Model version 3.6 (MM5V3) of Pennsylvania State University/National Center for Atmospheric Research (PSU/NCAR) and the coupled atmosphere-sea spray modeling system is applied to simulate a Western Pacific super ty-phoon Ewiniar in 2006. The simulation results demonstrate that sea spray can lead to a significant increase in heat fluxes at the air-sea interface and the simulated typhoon’s intensity. Compared with the results without sea spray,the minimum sea level pressure reduces about 8hPa after taking account of sea spray by Fairall et al.’s parameterization (1994) and about 5hPa by Andreas’ (2005) and Andreas and Wang’s (2006) parameterization at the end of the model integration,while the maximum 10m wind speed increases about 17% and 15% on average,respectively,through the entire simulation time period. Taking sea spray into account also causes significant changes in Tropical Cyclone (TC) structure due to an enhancement of water vapor and heat transferred from the sea sur-face to the air; therefore,the center structure of the typhoon becomes more clearly defined and the wind speed around the typhoon eye is stronger in numerical experiments. The simulations show that different sea spray flux parameterizations make different modi-fications to the TC structure.To study the potential effect of sea spray on the evolution of typhoons, two kinds of sea spray flux parameterization schemes developed by Andreas （2005） and Andreas and Wang （2006） and Fairall et al. （1994） respectively are incorporated into the regional atmospheric Mesoscale Model version 3.6 （MM5V3） of Pennsylvania State University/National Center for Atmospheric Research （PSU/NCAR） and the coupled atmosphere-sea spray modeling system is applied to simulate a Western Pacific super typhoon Ewiniar in 2006. The simulation results demonstrate that sea spray can lead to a significant increase in heat fluxes at the air-sea interface and the simulated typhoon＇s intensity. Compared with the results without sea spray, the minimum sea level pressure reduces about 8hPa after taking account of sea spray by Fairall et al. ＇s parameterization （1994） and about 5hPa by Andreas＇ （2005） and Andreas and Wang＇s （2006） parameterization at the end of the model integration, while the maximum 10m wind speed increases about 17% and 15% on average, respectively, through the entire simulation time period. Taking sea spray into account also causes significant changes in Tropical Cyclone （TC） structure due to an enhancement of water vapor and heat transferred from the sea surface to the air; therefore, the center structure of the typhoon becomes more clearly defined and the wind speed around the typhoon eye is stronger in numerical experiments. The simulations show that different sea spray flux parameterizations make different modifications to the TC structure.

关 键 词：sea spray tropical cyclone flux parameterization numerical simulation 

分 类 号：P732[天文地球—海洋科学]