Abstract
AbstractBased on a large eddy simulation (LES) model with anisotropy subgrid scale closure model and an explicit multi‐stage third‐order Runge‐Kutta scheme, we introduce the drag term on momentum, the heat source term and the production term of turbulent kinetic energy imposed by the canopy elements into the LES equations to simulate the meteorological field of the forest canopy and forest boundary layer. The analysis of simulation results and the comparison with observational data show that the LES model can simulate the turbulent flow in the forest canopy and forest boundary layer very well. Further research indicates that, under unstable stratification the turbulent structure of Kinking and Pairing in dense forest canopy, together with the large eddy structure of the forest boundary layer, forms the temperature ramp near the forest canopy.
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