Other
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsa41a1051m&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #SA41A-1051
Other
0310 Airglow And Aurora, 0340 Middle Atmosphere: Composition And Chemistry, 0341 Middle Atmosphere: Constituent Transport And Chemistry (3334), 0342 Middle Atmosphere: Energy Deposition
Scientific paper
Atomic oxygen plays a crucial role in determining the energy budget near the mesopause region of the atmosphere. The rates of important exothermic reactions depend either directly or indirectly on its concentration, as does the rate at which energy is lost through airglow emissions. Measurements of these emissions can thus be used to infer atomic oxygen densities and, through the use photochemical models, chemical heating rates. This work presents a three-way intercomparison of atomic oxygen derived from airglow observations made by the UARS-WINDII and TIMED-SABER instruments, and simulations using a global chemical-dynamical model. All datasets reveal significant seasonal and diurnal variability in atomic oxygen and so chemical heating rates, and again demonstrates the need to quantify constituent variability when examining the mesopause energy budget.
Marsh Daniel R.
Mlynczak Martin G.
Russell James M.
Russell Jason P.
Smith Anna K.
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