HR: 1340h
AN: SA53A-1160    [Abstracts]
TI: Observations of Nitric Oxide, Atomic Oxygen, and Ionized Magnesium in the MLT Region
AU: * Minschwaner, K
EM: krm@nmt.edu
AF: Department of Physics, New Mexico Institute of Mining and Technology, Socorro, NM 87801 United States
AU: Herceg, D
EM: dherceg@nmt.edu
AF: Department of Physics, New Mexico Institute of Mining and Technology, Socorro, NM 87801 United States
AU: Budzien, S A
EM: sbudzien@ssd5.nrl.navy.mil
AF: E. O. Hulbert Center for Space Research, Naval Research Laboratory 4555 Overlook Ave, Washington, DC, 20375 United States
AU: Dymond, K F
EM: kdymond@ssd5.nrl.navy.mil
AF: E. O. Hulbert Center for Space Research, Naval Research Laboratory 4555 Overlook Ave, Washington, DC, 20375 United States
AU: Fortna, C
EM: cfortna@ssd5.nrl.navy.mil
AF: E. O. Hulbert Center for Space Research, Naval Research Laboratory 4555 Overlook Ave, Washington, DC, 20375 United States
AU: McCoy, R P
EM: mccoyr@onr.navy.mil
AF: Office of Naval Research, 800 North Quincy Street, Arlington, VA 22217 United States
AB: We present an analysis of dayglow limb spectra obtained from the Ionospheric Spectroscopy and Atmospheric Chemistry (ISAAC) satellite instrument between 2600 and 3000 Angstroms, over tangent altitudes ranging from 85 to 120 kilometers. These spectra contain signatures of fluorescent scattering by nitric oxide in the gamma bands, emission by atomic oxygen at 2972 Angstroms, and fluorescent scattering by ionized magnesium. Our analysis includes retrievals for vertical profile densities of NO, and slant column densities of O and Mg+ at the mesopause and in the lower thermosphere. We show how these quantities are related to variable inputs of solar soft x-ray and EUV, and discuss implications for photochemical sources and dynamics of the MLT.
DE: 0310 Airglow and aurora
DE: 0355 Thermosphere: composition and chemistry
DE: 0358 Thermosphere: energy deposition (3369)
SC: SPA-Aeronomy [SA]
MN: Fall Meeting 2005