Correlation between foam-bubble size and drag coefficient in hurricane conditions

  title={Correlation between foam-bubble size and drag coefficient in hurricane conditions},
  author={Ephim Golbraikh and Yuri M. Shtemler},
  journal={Ocean Dynamics},
A recently proposed model of foam impact on the air–sea drag coefficient Cd has been employed for the estimation of the effective foam-bubble radius Rb variation with wind speed U10 in hurricane conditions. The model relates Cd(U10) with the effective roughness length Zeff(U10) represented as a sum of aerodynamic roughness lengths of the foam-free and foam-covered sea surfaces Zw(U10) and Zf(U10) weighted with the foam coverage coefficient αf(U10). This relation is treated for known… 
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Momentum and heat transfer across the foam-covered air-sea interface in hurricanes

Procedures of formal averaging over the air-sea interface are applied to both momentum and enthalpy surface-transfer coefficients, C D and C K , in hurricane conditions. The transfer coefficients

Modeling of the drag and thermal conductivity coefficients in tropical cyclones taking into account foam cover

A formal averaging procedure over the air-sea interface is developed for both momentum and enthalpy surface-transfer coefficients, C_D and C_K, in hurricane conditions. This leads to splitting of



Foam input into the drag coefficient in hurricane conditions

The Effect of Foam on Waves and the Aerodynamic Roughness of the Water Surface at High Winds

This paper models the impact of the presence of foam on the short-wave component of surface waves and momentum exchange in the atmospheric boundary layer at high winds. First, physical experiments

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The Reynolds number, which is the dimensionless ratio of the inertial force to the viscous force, is of great importance in the theory of hydrodynamic stability and the origin of turbulence. To

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Abstract A new functional form of the neutral drag coefficient for moderate to high wind speeds in the marine atmospheric boundary layer for a range of field measurements as reported in the

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It is found that surface momentum flux levels off as the wind speeds increase above hurricane force, contrary to surface flux parameterizations that are currently used in a variety of modelling applications, including hurricane risk assessment and prediction of storm motion, intensity, waves and storm surges.

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The aerodynamic friction between air and sea is an important part of the momentum balance in the development of tropical cyclones. Measurements of the drag coefficient, relating the tangential stress

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[1] Foam formations at the sea surface significantly contribute to microwave brightness temperature signatures over the ocean for moderate to high wind speeds. The thickness of foam layers generated

Effective medium approximation model of sea foam layer microwave emissivity of a vertical profile

  • E. Wei
  • Environmental Science
  • 2013
A sea foam layer produced by wave breaking consists of seawater-coated air bubbles, fluid water, and air. The non-uniformity and microstructure of the air–water mixture in a foam layer can cause some

Strong correlation between the drag coefficient and the shape of the wind sea spectrum over a broad range of wind speeds

Momentum transfer across the wind‐driven breaking air‐water interface under strong wind conditions was experimentally investigated using a high‐speed wind‐wave tank together with field measurements