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- Title
On the parameterization of the roughness length for the air-sea interface in free convection.
- Authors
Hsu, S.
- Abstract
The roughness length at the air-sea interface during free convection (z0fc) is mainly related to the convective velocity (w*) rather than the friction velocity (u*). The parameterization of z0fc with w/g as proposed by Abdella and D’Alessio in 2003 is evaluated. It is shown that their proposed formula is consistent with field measurements. In order to avoid self-correlation by using u*, a new parameterization of w* with wind speed (Uz) at height z and stability parameter (z/L, where L is the buoyancy length) is proposed. This new formula for w* is in agreement with an independent field result.
- Subjects
OCEAN-atmosphere interaction; NATURAL heat convection; OCEAN convection; HYDROTHERMAL circulation (Oceanography); MARINE meteorology; OCEAN circulation; OCEANOGRAPHY
- Publication
Environmental Fluid Mechanics, 2004, Vol 4, Issue 4, p451
- ISSN
1567-7419
- Publication type
Article
- DOI
10.1007/s10652-005-1668-8