Effects of canopy architectural parameterizations on the modeling of radiative transfer mechanism

Ajit Govind, Dominique Guyon, Jean-Louis Roujean, Nathalie Yauschew-Raguenes, Jyothi Kumari, Jan Pisek and Jean-Pierre Wigneron

Ecological Modelling, 2013, vol. 251, issue C, 114-126

Abstract: In most of the ecological models, simplified methods are still being used to describe the canopy radiative transfer mechanism (CRTM). Largest uncertainties in the conceptualization of CRTM lies in the adequate description of the two main canopy architectural parameters: (1) the projection function (G) that describes the foliage inclination distribution in space and (2) the clumping function (Ω) that describes the aggregative nature of canopy elements. Herein, we explore the effects of different (simple to complex) representations of the G and Ω functions on simulations of photosynthetically active radiation (PAR) transmitted through a middle-aged maritime pine canopy, using a scenario-based numerical experiment.

Keywords: Pinus pinaster; G-function; Canopy clumping; Beta distribution; Ellipsoidal distribution; Spherical distribution; Random canopy; PAR transmission (search for similar items in EconPapers)
Date: 2013
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:ecomod:v:251:y:2013:i:c:p:114-126

DOI: 10.1016/j.ecolmodel.2012.11.014

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