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Incorporating Plant Phenology Dynamics in a Biophysical Canopy ModelThe Multi-Layer Canopy Model (MLCan) is a vegetation model created to capture plant responses to environmental change. Themodel vertically resolves carbon uptake, water vapor and energy exchange at each canopy level by coupling photosynthesis, stomatal conductance and leaf energy balance. The model is forced by incoming shortwave and longwave radiation, as well as near-surface meteorological conditions. The original formulation of MLCan utilized canopy structural traits derived from observations. This project aims to incorporate a plant phenology scheme within MLCan allowing these structural traits to vary dynamically. In the plant phenology scheme implemented here, plant growth is dependent on environmental conditions such as air temperature and soil moisture. The scheme includes functionality that models plant germination, growth, and senescence. These growth stages dictate the variation in six different vegetative carbon pools: storage, leaves, stem, coarse roots, fine roots, and reproductive. The magnitudes of these carbon pools determine land surface parameters such as leaf area index, canopy height, rooting depth and root water uptake capacity. Coupling this phenology scheme with MLCan allows for a more flexible representation of the structure and function of vegetation as it responds to changing environmental conditions.
Document ID
20150005567
Acquisition Source
Jet Propulsion Laboratory
Document Type
Other
External Source(s)
Authors
Barata, Raquel A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Drewry, Darren
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
April 13, 2015
Publication Date
August 20, 2012
Subject Category
Life Sciences (General)
Meteorology And Climatology
Earth Resources And Remote Sensing
Distribution Limits
Public
Copyright
Other
Keywords
environmental changes
Multi-Layer Canopy Model (MLCan)

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