HR: 15:10h
AN: P43B-06    [Abstracts]
TI: Aerosol profiles and surface albedo retrievals from multi-band, near-IR, spatially-resolved spectra of Titan
AU: * Adamkovics, M
EM: mate@berkeley.edu
AF: Department of Astronomy, UC Berkeley, 601 Campbell Hall, Berkeley, CA 94720 United States
AU: de Pater, I
EM: imke@berkeley.edu
AF: Department of Astronomy, UC Berkeley, 601 Campbell Hall, Berkeley, CA 94720 United States
AU: Hartung, M
EM: mhartung@eso.org
AF: European Southern Observatory, Alonso de Cordova 3107, Santiago, Chile, 42391 Germany
AU: Eisenhauer, F
EM: eisenhau@mpe.mpg.de
AF: Max-Planck-Institut, Postfach 1312, Garching, German, 85741 Germany
AU: Gibbard, S G
EM: sgibbard@igpp.ucllnl.org
AF: Lawrence Livermore National Laboratory, IDPP, Livermore, CA 94550 United States
AU: Griffith, C A
EM: griffith@lpl.arizona.edu
AF: University of Arizona, Lunar and Planetary Lab, Tucson, AZ 85721 United States
AB: Retrieving the vertical profile of aerosol number density on Titan with near-IR spectra has historically involved the complete removal, or `rain-out', of tropospheric aerosol. Although spectra were well fit with this assumption about the microphysics and meteorology, recent results from the Huygens probe have revealed that there is significant aerosol opacity below the tropopause, refuting the `rain-out' assumption. While retrievals of aerosol profiles using ground-based spectroscopy can readily fit spectra with aerosol profiles that extend to the surface, there are a number of degenerate parameter combinations when reproducing an observed spectrum. Fitting multiple IR bands with the same parameter set constrains the number of possible parameter combinations. We present results from an updated plane-parallel, two-stream model, of Titan's atmosphere spanning 1-5 μm, fitting observations multiple bands using observations including Keck/NIRC2, VLT/SINFONI, and comparing our results to the Huygen's probe retrievals of aerosol number density.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 6213 Dust
DE: 6281 Titan
SC: Planetary Sciences [P]
MN: Fall Meeting 2005