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JOURNAL OF GEOPHYSICAL RESEARCH,
VOL. 98, NO. D10,
PP. 18,639-18,648, 1993
doi:10.1029/93JD01478
AN UPDATED MODEL FOR O2(a1Δg) CONCENTRATIONS IN THE MESOSPHERE AND LOWER THERMOSPHERE AND IMPLICATIONS FOR REMOTE SENSING OF OZONE AT 1.27 μm
Atmospheric Sciences Division, NASA Langley Research Center, Hampton, Virginia
NOAA Aeronomy Laboratory, Boulder, Colorado
Science Applications International Corporation, Hampton, Virginia
An updated kinetic model for the calculation of daytime steady state O2(a1Δg) concentrations in the mesosphere and lower thermosphere is presented. In addition to the usual source from ozone photolysis in the Hartley band, energy transfer from O(1D) produced by photolysis of molecular oxygen in the Lyman alpha and Schumann-Runge continuum spectral intervals is shown be a significant source of O2(a1Δg) as well. Numerous changes and additions to the basic O2(a1Δg) kinetic model have been included. These new sources and kinetic parameters imply that lower mesospheric ozone concentrations as inferred by near-infrared emission techniques are to be decreased by as much as 10% while lower thermospheric ozone concentrations are to be increased by as much as 20%.
Received 20 February 1993; accepted 1 June 1993; .
Citation: (1993), AN UPDATED MODEL FOR O2(a1Δg) CONCENTRATIONS IN THE MESOSPHERE AND LOWER THERMOSPHERE AND IMPLICATIONS FOR REMOTE SENSING OF OZONE AT 1.27 μm, J. Geophys. Res., 98(D10), 18,639–18,648, doi:10.1029/93JD01478.
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