Boundary-Layer Meteorology

, Volume 151, Issue 2, pp 239–256 | Cite as

Analytically Modelling Mean Wind and Stress Profiles in Canopies

Article

Abstract

An analytical model for mean wind profiles in sparse canopies (W. Wang, Boundary-Layer Meteorol 142:383–399, 2012) has been further developed, with (1) an explicit solution being derived, and (2) a linear term being added to the \(K\)-closure scheme to improve the shear-stress parametrization when the contribution of non-local transport is significant. Results from large-eddy simulations and from laboratory experiments are used to evaluate the model and adjust model parameters, showing that the model can well simulate canopy wind and stress profiles not only for sparse-canopy scenarios, but also for dense-canopy scenarios. The analytical solution converges exactly to the standard surface-layer logarithmic wind profile in the case of zero canopy density, and tends to an exponential wind profile for a dense canopy.

Keywords

Analytical wind model Canopy mean wind profile Canopy stress profile Large-eddy simulation Non-local transport 

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  1. 1.IMSG@ NCEP/NOAACollege ParkUSA

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