HR: 11:50h
AN: A32A-07    [Abstracts]
TI: Surface Reflectance of Mexico City
AU: * Cairns, B
EM: bcairns@giss.nasa.gov
AF: NASA GISS, 2880 Broadway, New York, NY 10025, United States
AU: Knobelspiesse, K
EM: kknoblespiesse@giss.nasa.gov
AF: Columbia University Dept. Appl. Phys. & Appl. Math., 2880 Broadway, New York, NY 10025, United States
AU: Redeman, J
EM: jredeman@mail.arc.nasa.gov
AF: BAERI, 4742 Suffolk Ct. Ventura, Ventura, CA 93003, United States
AU: Russell, P B
EM: Philip.B.Russell@nasa.gov
AF: NASA AMES RESEARCH CENTER, MS 245-5, Moffett Field, CA 94035-1000, United States
AU: Schmidt, S
EM: sebastian.schmidt@lasp.colorado.edu
AF: LASP, Duane Physics Building, Room D-337, University of Colorado, Boulder, CO 80309- 0311, United States
AB: During the MILAGRO field campaign that took part in March of 2006 the Sky Research J31 aircraft carried the fourteen channel NASA Ames Research Center Advanced Airborne Tracking Sunphotometers (AATS-14) and the Spectral Scanning Flux Radiometer (SSFR) together with the SpecTIR Corp. Research Scanning Polarimeter (RSP). These instruments were used to obtain low altitude measurements of the upwelling spectral flux and multi-spectral multi-angle polarized radiances together with the downwelling spectral flux and the multi-spectral measurements of the downwelling direct solar beam over Mexico City. The measurements are used to characterize the surface bidirectional reflectance distribution function (BRDF) and the polarized reflectance of the surface. The BRDF and polarized reflectance estimates are used to improve the capability to remotely characterize the aerosols above the surface of the city and estimate the burden, type, size and single scattering albedo (ssa) of the aerosols . The BRDF estimates together with the estimated aerosol burden and ssa allow the variation in absorbed surface solar radiation to be estimated over the course of the day. Estimates of the effect of the aerosols on the surface radiation budget are given and an evaluation of what types of model are sufficient to represent the surface polarized BRDF of an urban environment.
DE: 0360 Radiation: transmission and scattering
DE: 1631 Land/atmosphere interactions (1218, 1843, 3322)
DE: 1855 Remote sensing (1640)
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting