HR: 1340h
AN: SA43A-1087    [Abstracts]
TI: Two-Satellite Comparison of Molecular Oxygen Singlet Delta in the Mesosphere
AU: * Petelina, S V
EM: svetlana@osirus.usask.ca
AF: University of Saskatchewan, 116 Science Place, Saskatoon, SK S7N 5E2 Canada
AU: Degenstein, D A
EM: doug.degenstein@usask.ca
AF: University of Saskatchewan, 116 Science Place, Saskatoon, SK S7N 5E2 Canada
AU: Llewellyn, E J
EM: edward.llewellyn@usask.ca
AF: University of Saskatchewan, 116 Science Place, Saskatoon, SK S7N 5E2 Canada
AU: Mlynczak, M G
EM: m.g.mlynczak@nasa.gov
AF: NASA Langley Research Center, 100 NASA road, Hampton, VA 23681 United States
AU: Russell, J M
EM: JAMES.RUSSELL@hamptonu.edu
AF: Center for Atmospheric Sciences, Hampton University, Hampton, VA 23668 United States
AB: Optical Spectrograph and InfraRed Imager System (OSIRIS) on the Odin satellite has been in full operation since November, 2001. OSIRIS routinely produces, among other parameters, 2-D maps of the Oxygen Infrared Atmospheric band airglow, O₂(a¹Δ_g), with the vertical and horizontal (along the satellite track) resolution of 1 km and 27 km respectively. The Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on the Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite has been operational since January, 2002. SABER measures different atmospheric constituents, including the vertical profiles of O₂(a¹Δ_g), with the 0.3-0.4 km spacing. As OSIRIS and SABER have different line-of-sight directions, it is valuable to compare the two datasets for various coincidence criteria and analyze the results for the steady state and non-steady state conditions. Apart from direct validation and improving the OSIRIS and SABER O₂(a¹Δ_g) retrieval algorithms, such comparisons also provide important information for chemical models as the different viewing geometries and certain local solar time variations at the instrument tangent points may help to improve our understanding of the chemical processes in the mesosphere. In this paper we discuss the systematic and random differences in the OSIRIS and SABER O₂(a¹Δ_g) climatology, as well as the individual coincidences for steady state and non-steady state conditions.
DE: 0310 Airglow and aurora
DE: 0335 Ion chemistry of the atmosphere (2419, 2427)
DE: 0340 Middle atmosphere: composition and chemistry
DE: 0343 Planetary atmospheres (5210, 5405, 5704)
SC: SPA-Aeronomy [SA]
MN: Fall Meeting 2005