Title :
Shinnery oak bidirectional reflectance properties and canopy model inversion
Author :
Deering, Donald W. ; Eck, Thomas F. ; Grier, Toby
Author_Institution :
NASA Goddard Space Flight Center, Greenbelt, MD, USA
fDate :
3/1/1992 12:00:00 AM
Abstract :
The authors present field measurements and the results of a three-dimensional canopy model inversion for sand shinnery oak. Spectral bidirectional radiance measurements in three spectral channels, 0.65-0.67 μm, 0.81-0.84 μm, and 1.62-1.69 μm, encompassing both the complete land surface and sky hemispheres, were acquired for a sand shinnery oak plant community in west Texas. The changes in canopy reflectance that occur with variations in solar zenith angle and view direction and for two seasons of the year were evaluated. A three-dimensional radiation interaction model (TRIM) was then inverted to estimate oak leaf area index (LAI) and canopy density, expressed as percentage of cover, from the bidirectional reflectance data
Keywords :
ecology; reflectivity; remote sensing; 0.65 to 1.69 micron; IR; Texas; United States; bidirectional reflectance properties; canopy density; canopy model inversion; oak leaf area index; radiance measurements; remote sensing; sand shinnery oak; shin oak; solar zenith angle; three-dimensional canopy model inversion; three-dimensional radiation interaction model; visible; Anisotropic magnetoresistance; Bidirectional control; Data mining; Instruments; NASA; Reflectivity; Remote sensing; Satellites; Time measurement; Vegetation;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
