O2 absorption cross sections /187-225 nm/ from stratospheric solar flux measurements

Details O2 absorption cross sections /187-225 nm/ from stratospheric solar flux measurements O2 absorption cross sections /187-225 nm/ from stratospheric solar flux measurements

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.8967h&link_type=abstract

Journal of Geophysical Research, vol. 87, Oct. 20, 1982, p. 8967-8975.

Physics

76

Absorption Cross Sections, Atmospheric Attenuation, Oxygen Spectra, Ozone, Solar Flux, Stratosphere Radiation, Balloon-Borne Instruments, Error Analysis, Ozonometry, Rayleigh Scattering, Schumann-Runge Bands, Transmissivity, Ultraviolet Absorption

Scientific paper

The absorption cross sections of molecular oxygen are calculated in the wavelength range from 187 to 230 nm from solar flux measurements obtained within the stratosphere. Within the Herzberg continuum wavelength region the molecular oxygen cross sections are found to be about 30% smaller than the laboratory results of Shardanand and Rao (1977) from 200 to 210 nm and about 50% smaller than those of Hasson and Nicholls (1971). At wavelengths longer than 210 nm the cross sections agree with those of Shardanand and Rao. The effective absorption cross sections of O2 in the Schumann-Runge band region from 187 to 200 nm are calculated and compared to the empirical fit given by Allen and Frederick (1982). The calculated cross sections indicate that the transmissivity of the atmosphere may be underestimated by the use of the Allen and Frederic cross sections between 195 and 200 nm. The ozone column content between 30 and 40 km and the relative ozone cross sections are determined from the same solar flux data set.

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