HR: 0830h
AN: B21E-0763    [PDF]
TI: Albedo/BRDF Retrievals from MODIS Using 8-day Clear-sky Composites
AU: * Luo, Y
EM: yi.luo@NRCan.gc.ca
AF: Noetix Research Inc., 265 Carling Ave, Ottawa, ON K1S2E1 Canada
AU: Trishchenko, A P
EM: Trichtch@nrcan.gc.ca
AF: Canada Centre for Remote Sensing, NRCan, 588 Booth Street, Ottawa, ON K1A0Y7 Canada
AU: Latifovic, R
EM: Rasim.Latifovic@nrcan.gc.ca
AF: Canada Centre for Remote Sensing, NRCan, 588 Booth Street, Ottawa, ON K1A0Y7 Canada
AU: Li, Z
EM: zli@atmos.umd.edu
AF: University of Maryland, 2207 Computer & Space Sciences Bldg, College Park, MD 20742-2425 United States
AB: We present results of retrievals of surface bi-directional reflectance distribution function (BRDF) and albedo properties using MODIS 8-day clear-sky composite product MOD09. The approach is based on simultaneous use of landcover classification and clear-sky composite data products. Surface anisotropic properties derived from MODIS, which is a cross track scanning instrument, are also validated against multiangular observations available from Terra/MISR data. Comparison has been made over the Atmospheric Radiation Measurement (ARM) Program Southern Great Plane (SGP) study area. In general, results compare quite favorably with MODIS BRDF/Albedo product MOD43. This indicates the possibility of surface albedo/BRDF mapping with higher temporal resolution - 8 days instead of 16 days as presently adopted in MODIS data processing. Limitations and consequences of BRDF retrievals using observations available from single sun-synchronous platform are also analyzed. Approach and results for generating 10-day surface albedo/BRDF products using MODIS MOD09 clear-sky composite data will be also discussed. This temporal resolution is required to provide compatibility with other satellite datasets, such as ones available from AVHRR and VGT sensors. This research was supported by the US Department of Energy Atmospheric Radiation Measurement (ARM) Program under grant No. DE-FG02-02ER63351.
DE: 0400 Biogeosciences
DE: 1640 Remote sensing
SC: Biogeosciences [B]
MN: 2003 Fall Meeting