Journal of Tropical Oceanography ›› 2010, Vol. 29 ›› Issue (3): 17-27.doi: 10.11978/j.issn.1009-5470.2010.03.017cstr: 32234.14.j.issn.1009-5470.2010.03.017

• Marine meteorology • Previous Articles     Next Articles

Sea spray parameterization used in typhoon simulations

LIU Lei1, ZHENG Jing1, LU Zhi-wu2, ZHANG Yi-tao3   

  1. 1. Institute of Meteorology, PLA Univ. of Sci. & Tech., Nanjing 211101, China; 2. PLA, 69008 Army Observatory; 3. PLA Navy, 91316 Army Observatory
  • Received:2008-11-15 Revised:2010-03-11 Online:2010-07-01 Published:2010-05-24
  • About author:刘磊(1982—), 男, 新疆乌鲁木齐市人, 博士研究生, 主要从事中尺度海气相互作用研究。
  • Supported by:

    国家自然科学基金项目(40805046/D0508); 国家重点基础研究发展规划项目(973)课题(2009B421502); 行业专项GYHY(QX2007-6-15)

Abstract:

Sea spray, an important factor in the air-sea interaction, plays an essential role in the occurrence and evolution of typhoon. In order to examine the impact of different sea spray parameterizations on typhoon simulations, the Fairall and Andreas schemes were included in the WRF atmosphere model to simulate two typhoons. The results show that the latent and sensible heat fluxes increased greatly in the Fairall scheme. Since the heat construction of the typhoons changed and the warm core was obvious, the dynamic construction changed as well. Relative diff-vortex explains the cause of the change in typhoon's track and the diff-divergence, vortex and the vapor flux affect the intensity of typhoon. The Andreas scheme, which considers the change of roughness in momentum, heat, and moisture with wind speed and relative humidity, has lower latent and sensible heat fluxes than the Fairall scheme, so the intensity of the typhoons is strong. The simulation of track is less impacted by different sea spray parameterizations.

Key words: WRF model, sea spray parameterization, typhoon, numerical simulation