Self-consistent Non-LTE Model of Infrared Molecular Emissions and Oxygen Dayglows in the Mesosphere and Lower Thermosphere

Details Self-consistent Non-LTE Model of Infrared Molecular Emissions and Oxygen Dayglows in the Mesosphere and Lower Thermosphere Self-consistent Non-LTE Model of Infrared Molecular Emissions and Oxygen Dayglows in the Mesosphere and Lower Thermosphere

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsa41a0293k&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SA41A-0293

Other

0340 Middle Atmosphere: Composition And Chemistry, 0342 Middle Atmosphere: Energy Deposition (3334), 0360 Radiation: Transmission And Scattering, 3359 Radiative Processes

Scientific paper

We describe the new version of the ALI-ARMS (for Accelerated Lambda Iterations for Atmospheric Radiation and Molecular Spectra) model. The model allows simultaneous, self-consistent calculations of the non-LTE populations of the electronic- vibrational levels of ozone and O2 photolysis products and the vibrational level populations of CO2, N2, O2, O3, H2O, CO, and other molecules with a detailed accounting of electronic-vibrational, vibrational-vibrational and vibrational-translational energy exchange processes. The model is used as the reference for modeling O2 dayglow experiments and for the infrared molecular emissions measured by the multi-channel observations of MLT in the SABER experiment on TIMED. It also permits the re-evaluation of the thermalization efficiency of absorbed solar ultraviolet energy and infrared radiative cooling/heating of MLT through a detailed accounting of the electronic-vibrational relaxation of excited photolysis products via a complex chain of collisional energy conversion processes down to the vibrational energy of optically active trace gas molecules.

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