Momentum and buoyancy transfer in atmospheric turbulent boundary layer over wavy water surface – Part 1: Harmonic wave
Yu. I. Troitskaya4,1,E. V. Ezhova4,1,and S. S. Zilitinkevich2,3,4,5,6Yu. I. Troitskaya et al.Yu. I. Troitskaya4,1,E. V. Ezhova4,1,and S. S. Zilitinkevich2,3,4,5,6
Received: 28 Mar 2013 – Revised: 19 Jul 2013 – Accepted: 05 Aug 2013 – Published: 29 Oct 2013
Abstract. The surface-drag and mass-transfer coefficients are determined within a self-consistent problem of wave-induced perturbations and mean fields of velocity and density in the air, using a quasi-linear model based on the Reynolds equations with down-gradient turbulence closure. Investigation of a harmonic wave propagating along the wind has disclosed that the surface drag is generally larger for shorter waves. This effect is more pronounced in the unstable and neutral stratification. The stable stratification suppresses turbulence, which leads to weakening of the momentum and mass transfer.