Analysis of scaling-up resistances from leaf to canopy using numerical simulations

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Analysis of scaling-up resistances from leaf to canopy using numerical simulations

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dc.contributor.author Furon, Adriana, C.
dc.contributor.author Warland, Jon S.
dc.contributor.author Wagner-Riddle, Claudia
dc.date.accessioned 2009-11-12T16:50:02Z
dc.date.available 2009-11-12T16:50:02Z
dc.date.issued 2007-11
dc.identifier.citation Furon, A.C., Warland, J.S. and Wagner-Riddle, C. "Analysis of scaling-up resistances from leaf to canopy using numerical simulations." Agronomy Journal 99.6 (2007): 1483-1491 en
dc.identifier.uri http://hdl.handle.net/10214/2068
dc.description.abstract A multi-layer model, combining Lagrangian dispersion at the canopy level with Ohm’s Law analogy at the leaf level, was used in numerical simulations to assess the leaf-to-canopy scale translation of surface resistances. The model produced unique profiles of fluxes and scalar concentrations that satisfied both the dispersion and leaf models. Environmental factors and canopy architecture were varied, and stomatal conductance was simulated using either a simple relationship with net radiation or the Ball and Berry model to account for feedback mechanisms. Results showed that, when the assumptions of the Penman–Monteith equation were met, scaled-up leaf conductance closely matched the bulk canopy conductance. However, as the scenarios modeled departed from the ideal conditions of Penman–Monteith, the agreement decreased. In particular, correct estimation of the aerodynamic resistance, through correct parameterization of the roughness length for sensible heat, was identified as a key issue. en
dc.language.iso en_US en
dc.publisher American Society of Agronomy en
dc.title Analysis of scaling-up resistances from leaf to canopy using numerical simulations en
dc.type Article en


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