Thermal Vegetation Canopy Model Studies
COLORADO STATE UNIV FORT COLLINS COLL OF FORESTRY AND NATURAL RESOURCES
Pagination or Media Count:
An iterative-type thermal model applicable to forest canopies was tested with data from two diverse forest types. The model framework consists of a system of steady-state energy budget equations describing the interactions of short- and long-wave radiation within three horizontally infinite canopy layers. A state-space formulation of the energy dynamics within the canopy is used which permits a factorization of canopy geometrical parameters from canopy optical and thermal coefficients as well as environmental driving variables. Two sets of data characterizing a coniferous Douglas-fir and deciduous oak-hickory canopy were collected to evaluate the thermal model. The results show that the model approximates measured mean canopy temepatures to within 2 deg C for relatively clear weather conditions and deviates by a maximum of 3 deg C for very hazy or foggy conditions.
- Numerical Mathematics