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Updated: Jun 13, 2026

Wind Tunnel Experiments to Study Chaparral Crown Fires
Published on: November 14, 2017
[Turbulent characteristics in forest canopy under atmospheric neutral condition]
Yi-Wei Diao1, De-Xin Guan, Chang-Jie Jin
1Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. yiweidiao@nuist.edu.cn
Abstract:
Based on the micrometeorological data of broad-leaved Korean pine forest in Changbai Mountain in 2003, a second-order closure model was employed to calculate and analyze the turbulent characteristics within and above the canopy of the forest. The calculated mean wind profile was coincident with the measured one. The Reynolds stress within the forest was significantly attenuated. The turbulent strength, velocity flux, and skew were the largest at forest-atmosphere interface, as well the wind shear. With the increase of velocity skew, the turbulent intermittence became more significant, and the downward turbulent eddy within the canopy was limited. Most of the turbulent deeply within the forest canopy was produced by the non-local contributions above the canopy.
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