HR: 1340h
AN: A33B-0906    [Abstracts]
TI: Validation of O₃ and O₂ column densities retrieved from airborne direct solar irradiance measurements and the effects of field inhomogeneity
AU: * Swartz, W H
EM: bill.swartz@jhuapl.edu
AF: Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723-6099 United States
AU: Yee, J
EM: Sam.Yee@jhuapl.edu
AF: Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723-6099 United States
AU: Randall, C E
EM: Cora.Randall@lasp.colorado.edu
AF: Laboratory for Atmospheric and Space Physics, UCB 392, University of Colorado, Boulder, CO 80309-0392 United States
AU: Shetter, R E
EM: shetter@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305 United States
AU: Livingston, J M
EM: jlivingston@mail.arc.nasa.gov
AF: SRI International, G-274, 333 Ravenswood Avenue, Menlo Park, CA 94025 United States
AU: Russell, P B
EM: Philip.B.Russell@nasa.gov
AF: NASA Ames Research Center, NASA Ames Research Center, Moffett Field, CA 94035-1000 United States
AU: Pitts, M C
EM: Michael.C.Pitts@nasa.gov
AF: NASA Langley Research Center, NASA Langley Research Center, Hampton, VA 23681-2199 United States
AU: Browell, E V
EM: Edward.V.Browell@nasa.gov
AF: NASA Langley Research Center, NASA Langley Research Center, Hampton, VA 23681-2199 United States
AU: Burris, J F
EM: john.f.burris@nasa.gov
AF: NASA Goddard Space Flight Center, NASA Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: McGee, T J
EM: mcgee@aeolus.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, NASA Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: Avery, M A
EM: m.a.avery@larc.nasa.gov
AF: NASA Langley Research Center, NASA Langley Research Center, Hampton, VA 23681-2199 United States
AB: Direct observations of the Sun at large zenith angles during the second SAGE~III Ozone Loss and Validation Experiment (SOLVE~II) by several instruments on-board the NASA DC-8 have provided a rich dataset for the retrieval and analysis of line-of-sight column composition. A multi-spectral fitting technique has been successfully applied to spectral irradiance measurements made by the Direct beam Irradiance Atmospheric Spectrometer (DIAS) and the Langley Airborne A-Band Spectrometer (LAABS). O₂, O₃, and O₄ line-of-sight column densities have been retrieved, along with the spectral aerosol optical depth. Intercomparisons with other measurements and measurement-derived forward-model simulations allow us to examine the impacts of field inhomogeneity on the interpretation of validation results. Existing and future satellite retrievals and their validation can potentially be affected by spatial gradients and variability in species composition on both large and small spatial scales (e.g., high-latitude ozone). In this paper, we examine and quantify the impact of spatial inhomogeneities on remote sensing observations and retrievals. Implications for data validation are presented.
DE: 0340 Middle atmosphere: composition and chemistry
DE: 0360 Radiation: transmission and scattering
DE: 0394 Instruments and techniques
DE: 1640 Remote sensing (1855)
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005