Thermal Vegetation Canopy Model Studies
Abstract
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1981
- Accession Number
- ADA109436
Entities
People
- B. Hutchison
- Hung D. Nguyen
- J. A. Smith
- K. J. Ranson
- L. Balick
- L. E. Link
- L. Fritschen
Organizations
- Colorado State University