Air－Sea Turbulent Flux Parameterization Schemes in SAMIL Model

The air－sea flux parameterization scheme (Louis scheme) for the general circulation model (R42L26 2.08) developed at the State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG) in the Institute of Atmospheric Physics (IAP), Chinese Academy Sciences, and a new developed air－sea turbulent flux parameterization scheme (LGLC scheme), have been compared by using offline and online tests. The result for the offline test shows that the calculated flux result with LGLC scheme is more consistent with observational data, in addition, since taking account of the difference between aerodynamic and thermal roughness length, the calculated flux result is more accurate. The online test shows that the SAMIL (Spectral Atmosphere Model of IAP LASG) model coupled with LGLC scheme produces more realistic surface wind stress, sensible heat flux, latent heat flux, and precipitation, especially precipitation over the zone of the Indian monsoon and the South China Sea monsoon in summertime of the Northern Hemisphere. 