HR: 11:44h
AN: A32B-07    [Abstracts]
TI: Radiation Closure Studies for Clear-Sky Conditions During the ARM 2003 Aerosol Intensive Observation Period
AU: * Michalsky, J J
EM: joseph.michalsky@noaa.gov
AF: Surface Radiation Research Branch, Air Resources Laboratory, NOAA, 325 Broadway R/ARL, Boulder, Co 80305 United States
AU: Anderson, G P
EM: gail.anderson@noaa.gov
AF: Air Force Research Laboratory, 325 Broadway R/CMDL1, Boulder, CO 80305 United States
AU: Barnard, J
EM: james.barnard@pnl.gov
AF: Pacific Northwest National Laboratory, PO Box 999, K9-30, Richland, WA 99352 United States
AU: Gueymard, C
EM: Chris@SolarConsultingServices.com
AF: Solar Consulting Services, 97 Lake Fairgreen Circle, New Smyrna Beach, Fl 32168 United States
AU: Kato, S
EM: s.kato@larc.nasa.gov
AF: Hampton University/NASA Langley Research Center, Mail Stop 420, Hampton, VA 23681 United States
AU: Kiedron, P
EM: Kiedron@asrc.cestm.albany.edu
AF: Atmospheric Sciences Research Center, State University of New York, 251 Fuller Rd, Albany, NY 12203 United States
AU: McComiskey, A
EM: allison.payton@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, 325 Broadway R/CMDL1, Boulder, CO 80305 United States
AB: During May 2003 the ARM aerosol community held a month-long aerosol intensive observation period where many, and often redundant, aerosol physical, chemical, and optical properties were measured. One of the many goals of the study was to assess the agreement between down-welling solar (shortwave) irradiance measurements and solar models. In this study we test four models for total column aerosol loads ranging between 0.06 to 0.36 optical depths at 500 nm whenever we are certain that the sky is completely free of clouds. The four models tested include MODTRAN, RAPRAD, SBDART, and SMARTS2. The inputs to the models are carefully screened, paying particular attention to the aerosol single scattering albedo and the asymmetry parameters, and are identical for each model. Likewise, the extraterrestrial spectral irradiance used as an input is identical for each model. Most of the presentation discusses broadband results, but we will touch on spectral behavior as time allows.
DE: 3359 Radiative processes
DE: 3367 Theoretical modeling
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting