BOREAS TE-18 GeoSail Canopy Reflectance Model

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20010004611.pdf (901.5 KB)

Links to Files

https://ntrs.nasa.gov/citations/20010004611

Permanent Link

http://hdl.handle.net/11603/31555

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UMBC Joint Center for Earth Systems Technology (JCET)
UMBC Geography and Environmental Systems Department
UMBC GESTAR II

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Author/Creator ORCID

https://orcid.org/0000-0003-4148-9108

Date

2000-10-01

Type of Work

technical reports
Text

Department

Program

Citation of Original Publication

Hall, Forrest G., and Karl Huemmrich. "BOREAS TE-18 GeoSail Canopy Reflectance Model." National Aeronautics and Space Administration: 2000. NASA/TM—2000–209891 179. https://ntrs.nasa.gov/citations/20010004611.

Rights

This is a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain Mark 1.0 Universal

Subjects

Abstract

The SAIL (Scattering from Arbitrarily Inclined Leaves) model was combined with the Jasinski geo metric model to simulate canopy spectral reflectance and absorption of photosynthetically active radiation for discontinuous canopies. This model is called the GeoSail model. Tree shapes are described by cylinders or cones distributed over a plane. Spectral reflectance and transmittance of trees are calculated from the SAIL model to determine the reflectance of the three components used in the geometric model: illuminated canopy, illuminated background, shadowed canopy, and shadowed background. The model code is Fortran. sample input and output data are provided in ASCII text files. The data files are available on a CD-ROM (see document number 20010000884), or from the Oak Ridge National Laboratory (ORNL) Distributed Activity Archive Center (DAAC).