HR: 0800h
AN: SA41A-1056    [Abstracts]
TI: Morphological Studies of Mesospheric Chemical Heating Rates Using HRDI/UARS and SABER/TIMED Measurements
AU: Morgan, M F
EM: frank.morgan@jhuapl.edu
AF: Applied Physics Laboratory, Johns Hopkins University, 11100 Johns Hopkins University, Laurel, MD 20723 United States
AU: * Yee, J H
EM: sam.yee@jhuapl.edu
AF: Applied Physics Laboratory, Johns Hopkins University, 11100 Johns Hopkins University, Laurel, MD 20723 United States
AU: Talaat, E
EM: elsayed.talaat@jhuapl.edu
AF: Applied Physics Laboratory, Johns Hopkins University, 11100 Johns Hopkins University, Laurel, MD 20723 United States
AU: Mlynczak, M G
EM: m.g.mlynczak@nasa.gov
AF: NASA Langley Research Center, Mail Stop 420, Hampton, VA 23681 United States
AU: Martin-Torres, F J
EM: fn.f.martin-torres@larc.nasa.gov
AF: NASA Langley Research Center, Mail Stop 420, Hampton, VA 23681 United States
AU: Skinner, W R
EM: wskinner@umich.edu
AF: Space Physics Research Laboratory, University of Michigan, 2455 Hayward Street, Ann Arbor, MI 48109 United States
AU: Russell, J M
EM: james.russell@hamptonu.edu
AF: Hampton University, 23 Tyler Street, Hampton, VA 23668 United States
AB: Several exothermic chemical reactions involving atomic oxygen, atomic hydrogen, and ozone are important heating sources in the mesosphere. These reactions also are directly or indirectly responsible for the airglow emissions in this altitude region. The rates for these airglow emissions, specifically the O($^1$S) greenline, O$_2$($^1\Sigma$), O$_2$($^1\Delta$), and OH Meinel bands, thus provide measurements of the chemical heating rates important for our understanding of mesospheric energetics. In this paper, we present the observed chemical heating rates of O+O+M, O+O$_2$+M, and H+O$_3$ reactions from nightglow emission rates measurements taken by the High Resolution Doppler Imager (HRDI) instrument onboard the Upper Atmosphere Research Satellite (UARS) and the Soundings of Atmosphere Using Broadband Emission Spectroscopy (SABER) instrument onboard Thermosphere-Ionosphere-Mesosphere, Energetics and Dynamics (TIMED). The temporal and spatial morphology of these chemical heating rates will be presented.
DE: 0310 Airglow and aurora
DE: 0340 Middle atmosphere--composition and chemistry
DE: 0342 Middle atmosphere--energy deposition
SC: SPA-Aeronomy [SA]
MN: 2004 AGU Fall Meeting