Physics
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991p%26ss...39.1155h&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 39, Aug. 1991, p. 1155-1162.
Physics
1
Far Infrared Radiation, Fine Structure, Oxygen Atoms, Thermosphere, Atmospheric Temperature, Temperature Profiles, White Noise
Scientific paper
It is demonstrated that the recovery of oxygen atom density and temperature atmospheric profiles can be obtained from the numerical inversion of simulated limb-look radiance from the two atomic oxygen far infrared fine-structure transitions at 63 microns (3P1 to 3P2) and 128 microns (3P0 to 3P1). The inversion of simulated radiance data with reasonable estimates of noise is possible if both the integrated radiance and line-center radiance are available for both transitions. In order for the recovery of the atmospheric parameters to be successful down to regions of high oxygen atom density (100 km), it is necessary to smooth the noisy radiance data prior to the application of a modified Gauss-Newton algorithm. Best results were obtained when a combination of cubic spline and optimal filtering smoothing techniques was used.
Harlow Harry B.
Riehl James P.
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