Mathematical Modeling of Vegetation Heterogeneity and Complex Topography Effects on Turbulent Exchange of GHG within the Atmospheric Surface Layerстатья

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1. proceedings-02-01310.pdf proceedings-02-01310.pdf 366,4 КБ 17 октября 2018 [Mukhartova]

[1] Mathematical modeling of vegetation heterogeneity and complex topography effects on turbulent exchange of ghg within the atmospheric surface layer / M. Iuliia, K. Alexander, M. Polina, O. Alexander // Proceedings. — 2018. — Vol. 20, no. 2. — P. 1310. The local-scale 2D and 3D models of greenhouse gases (GHG) exchange between a non-uniform land surface and the atmosphere were developed. They are based on solution of the system of averaged Navier-Stokes, continuity and diffusion-advection equations. For numerical solution of the differential equations the stable finite-difference schemes were suggested. The models were applied to derive effects of complex topography and vegetation heterogeneity on 2D-3D air flow patterns, as well as on CO2 exchange within the atmospheric surface layer. Several numerical experiments were also provided to describe the air-flow re-establishing after its interaction with some obstacle (e.g., forest edge). Quantitative criteria for selection of the experimental sites for continuous eddy covariance flux measurements characterized by minimum effects of horizontal advection on measured fluxes were suggested. [ DOI ]

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