The displacement height d and roughness length z0 are parameters of the logarithmic wind profile and as such these are characteristics of the surface, that are required in a multitude of meteorological modeling applications. Classically, both parameters are estimated from multi-level measurements of wind speed over a terrain sufficiently homogeneous to avoid footprint-induced differences between the levels. As a rule-of thumb, d of a dense, uniform crop or forest canopy is 2/3 to 3/4 of the canopy height h, and z0 about 10% of canopy height in absence of any d. However, the uncertainty of this rule-of-thumb becomes larger if the surface of interest is not "dense and uniform", in which case a site-specific determination is required again. By...
The northeastern coast of the U.S. is projected to expand its offshore wind capacity from the existi...
Aerodynamic roughness length is an important parameter for surface fluxes estimates. This paper deve...
Information of temporal and spatial variation of aerodynamic roughness length is required in most la...
We applied three approaches to estimate the zero-plane displacement d through the aerodynamic measur...
The estimation of joint values of both the roughness length z0 and the displacement height d is cons...
International audienceValues of the momentum roughness length, z0, and displacement height, d, deriv...
Understanding if and how the spatial and temporal variability of the surrounding environment affects...
Understanding if and how the spatial and temporal variability of the surrounding environment affects...
Understanding if and how the spatial and temporal variability of the surrounding environment affects...
An experiment of wind-profile measurements above a maize crop was described. First the mean ratio be...
The estimation of the surface roughness parameters and the choice of the non-dimensional gradient fu...
The aim of this work is to present experimentally evaluated effective roughnesses (zoe) of a partly ...
Wind-speed profiles within the internal boundary layer (IBL) are determined by the roughness of the ...
Surface roughness parameters, namely the roughness length and displacement height, are an integral i...
The aim of this work is to present experimentally evaluated effective roughnesses (z(oe)) of a partl...
The northeastern coast of the U.S. is projected to expand its offshore wind capacity from the existi...
Aerodynamic roughness length is an important parameter for surface fluxes estimates. This paper deve...
Information of temporal and spatial variation of aerodynamic roughness length is required in most la...
We applied three approaches to estimate the zero-plane displacement d through the aerodynamic measur...
The estimation of joint values of both the roughness length z0 and the displacement height d is cons...
International audienceValues of the momentum roughness length, z0, and displacement height, d, deriv...
Understanding if and how the spatial and temporal variability of the surrounding environment affects...
Understanding if and how the spatial and temporal variability of the surrounding environment affects...
Understanding if and how the spatial and temporal variability of the surrounding environment affects...
An experiment of wind-profile measurements above a maize crop was described. First the mean ratio be...
The estimation of the surface roughness parameters and the choice of the non-dimensional gradient fu...
The aim of this work is to present experimentally evaluated effective roughnesses (zoe) of a partly ...
Wind-speed profiles within the internal boundary layer (IBL) are determined by the roughness of the ...
Surface roughness parameters, namely the roughness length and displacement height, are an integral i...
The aim of this work is to present experimentally evaluated effective roughnesses (z(oe)) of a partl...
The northeastern coast of the U.S. is projected to expand its offshore wind capacity from the existi...
Aerodynamic roughness length is an important parameter for surface fluxes estimates. This paper deve...
Information of temporal and spatial variation of aerodynamic roughness length is required in most la...