Statistics – Applications
Scientific paper
Jun 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.2681a&link_type=abstract
Journal of Geophysical Research, vol. 84, June 1, 1979, p. 2681-2690.
Statistics
Applications
5
Absorption Spectra, Atmospheric Composition, Infrared Spectroscopy, Line Spectra, Optical Heterodyning, Stratosphere, Atmospheric Attenuation, Atmospheric Models, Carbon Dioxide Concentration, High Resolution, Laser Spectroscopy, Methane, Ozone, Radiative Transfer, Spectral Resolution
Scientific paper
Intensity profiles of infrared spectral lines of stratospheric constituents can be fully resolved with a heterodyne spectrometer of sufficiently high resolution (approximately 5 MHz = 0.000167 kaysers at 10 microns). The constituents' vertical distributions can then be evaluated accurately by analytic inversion of the measured line profiles. Estimates of the detection sensitivity of a heterodyne receiver are given in terms of minimum detectable volume mixing ratios of stratospheric constituents, indicating a large number of minor constituents which can be studied. Stratospheric spectral line shapes and the resolution required to measure them are discussed in light of calculated synthetic line profiles for some stratospheric molecules in a model atmosphere. The inversion technique for evaluation of gas concentration profiles is briefly described, and applications to synthetic lines of O3, CO2, CH4, and N2O are given. Some recent heterodyne measurements of CO2 and O3 absorption lines are analytically inverted, and the vertical distributions of the two gases are determined.
Abbas Merza
Buhl David
Frerking Margaret A.
Kostiuk Theodor,
Kunde Virgil G.
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