19. REMOTE SENSING OF ALBEDO USING THE BRDF IN
RELATION TO LAND SURFACE PROPERTIES
185
image, and the known location of cities and other human activity affecting
the natural vegetation cover.
The findings indicate that the angular dependence of land surface
reflectance may perhaps be utilized to investigate surface properties such as
LAI through volume scattering or surface roughness through shadow casting
effects in a semi-empirical way, whether directly through the ratio of albedo
or reflectance at various angles, or indirectly through mappings of
empirically rescaled model parameters. We therefore propose that these
experimental results suggest that further inquiry into this area of research is
warranted. The benefits could be substantial if techniques are successfully
developed.
7.
ACKNOWLEDGEMENTS
This work was supported by NASA’s MODIS project under NAS531369.
8.
REFERENCES
Barnsley, M. J., P. Lewis, M. Sutherland, and J.-P. Muller (1997) Estimating land surface
albedo in the HAPEX-Sahel southern super-site: Inversion of two BRDF models against
multiple angle ASAS images, Journal of Hydrology, 188–189, 749–778.
Disney, M., and P. Lewis (1998) An investigation of how linear BRDF models deal with the
complex scattering processes encountered in a real canopy, Proceedings of the
International Geoscience and Remote Sensing Symposium’98, CD-ROM.
Engelsen, O., B. Pinty, M. M. Verstraete, and J. V. Martonchik (1996) Parametric
bidirectional reflectance factor models: Evaluation, improvements and applications,
Report, Joint Research Centre of the European Commission, EU 16426, 114 pp.
d’Entremont, R.P. (1997) Meteorological applications of surface bidirectional reflectance
distribution functions retrieved from satellite data, Dissertation, Boston University,
Boston, MA 02215, 129 pp.
Hu, B., W. Lucht, X. Li, and A. H. Strahler (1997) Validation of kernel-driven models for
global modeling of bidirectional reflectance, Remote Sensing of Environment, 62, 201–
214.
Hyman, A. and W. Wanner (1997) Relationships between semi-empirical BRDF model
parameters and land cover type, Proceedings of the Remote Sensing Society, UK Annual
Study Conference’97, 30–35.
P. Lewis and E. Vives Ruiz de Lope (1997) The application of kernel-driven BRDF models
and AVHRR data to monitoring land surface dynamics in the Sahel, Journal of Remote
Sensing (China), 1, Supplement, 155–161.
Li, X., and A. H. Strahler (1992) Geometric-optical bidirectional reflectance modeling of the
discrete crown vegetation canopy: Effect of crown shape and mutual shadowing, IEEE
Transactions on Geoscience and Remote Sensing, 30, 276–292.
RELATION TO LAND SURFACE PROPERTIES
185
image, and the known location of cities and other human activity affecting
the natural vegetation cover.
The findings indicate that the angular dependence of land surface
reflectance may perhaps be utilized to investigate surface properties such as
LAI through volume scattering or surface roughness through shadow casting
effects in a semi-empirical way, whether directly through the ratio of albedo
or reflectance at various angles, or indirectly through mappings of
empirically rescaled model parameters. We therefore propose that these
experimental results suggest that further inquiry into this area of research is
warranted. The benefits could be substantial if techniques are successfully
developed.
7.
ACKNOWLEDGEMENTS
This work was supported by NASA’s MODIS project under NAS531369.
8.
REFERENCES
Barnsley, M. J., P. Lewis, M. Sutherland, and J.-P. Muller (1997) Estimating land surface
albedo in the HAPEX-Sahel southern super-site: Inversion of two BRDF models against
multiple angle ASAS images, Journal of Hydrology, 188–189, 749–778.
Disney, M., and P. Lewis (1998) An investigation of how linear BRDF models deal with the
complex scattering processes encountered in a real canopy, Proceedings of the
International Geoscience and Remote Sensing Symposium’98, CD-ROM.
Engelsen, O., B. Pinty, M. M. Verstraete, and J. V. Martonchik (1996) Parametric
bidirectional reflectance factor models: Evaluation, improvements and applications,
Report, Joint Research Centre of the European Commission, EU 16426, 114 pp.
d’Entremont, R.P. (1997) Meteorological applications of surface bidirectional reflectance
distribution functions retrieved from satellite data, Dissertation, Boston University,
Boston, MA 02215, 129 pp.
Hu, B., W. Lucht, X. Li, and A. H. Strahler (1997) Validation of kernel-driven models for
global modeling of bidirectional reflectance, Remote Sensing of Environment, 62, 201–
214.
Hyman, A. and W. Wanner (1997) Relationships between semi-empirical BRDF model
parameters and land cover type, Proceedings of the Remote Sensing Society, UK Annual
Study Conference’97, 30–35.
P. Lewis and E. Vives Ruiz de Lope (1997) The application of kernel-driven BRDF models
and AVHRR data to monitoring land surface dynamics in the Sahel, Journal of Remote
Sensing (China), 1, Supplement, 155–161.
Li, X., and A. H. Strahler (1992) Geometric-optical bidirectional reflectance modeling of the
discrete crown vegetation canopy: Effect of crown shape and mutual shadowing, IEEE
Transactions on Geoscience and Remote Sensing, 30, 276–292.