NPG Nonlinear Processes in Geophysics NPG Nonlin. Processes Geophys. 1607-7946 Copernicus Publications Göttingen, Germany 10.5194/npg-20-841-2013 Momentum and buoyancy transfer in atmospheric turbulent boundary layer over wavy water surface – Part 2: Wind–wave spectra Troitskaya Yu. I. https://orcid.org/0000-0002-3818-9211 4 1 Ezhova E. V. 4 1 Sergeev D. A. https://orcid.org/0000-0003-4910-3935 1 4 Kandaurov A. A. https://orcid.org/0000-0002-0014-8887 4 1 Baidakov G. A. https://orcid.org/0000-0002-7231-3511 1 Vdovin M. I. 4 1 Zilitinkevich S. S. https://orcid.org/0000-0002-3909-5436 4 3 2 5 6 Institute of Applied Physics RAS, Nizhniy Novgorod, Nizhniy Novgorod, Russia Finnish Meteorological Institute, Helsinki, Finland Department of Physics, University of Helsinki, Finland Department of Radiophysics, N.I. Lobachevski State University of Nizhniy Novgorod, Russia Institute of Geography RAS, Moscow, Russia Nansen Environmental and Remote Sensing Centre, Bergen, Norway 29 10 2013 20 5 841 856 Copyright: © 2013 Yu. I. Troitskaya et al. 2013 This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/ This article is available from https://npg.copernicus.org/articles/20/841/2013/npg-20-841-2013.html The full text article is available as a PDF file from https://npg.copernicus.org/articles/20/841/2013/npg-20-841-2013.pdf

Drag and mass exchange coefficients are calculated within a self-consistent problem for the wave-induced air perturbations and mean velocity and density fields using a quasi-linear model based on the Reynolds equations with down-gradient turbulence closure. This second part of the report is devoted to specification of the model elements: turbulent transfer coefficients and wave number-frequency spectra. It is shown that the theory agrees with laboratory and field experimental data well when turbulent mass and momentum transfer coefficients do not depend on the wave parameters. Among several model spectra better agreement of the theoretically calculated drag coefficients with TOGA (Tropical Ocean Global Atmosphere) COARE (Coupled Ocean–Atmosphere Response Experiment) data is achieved for the Hwang spectrum (Hwang, 2005) with the high frequency part completed by the Romeiser spectrum (Romeiser et al., 1997).

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