The O2 Schumann-Runge system - New calculations of photodissociation cross-sections

Details The O2 Schumann-Runge system - New calculations of photodissociation cross-sections The O2 Schumann-Runge system - New calculations of photodissociation cross-sections

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988p%26ss...36..819m&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 36, Aug. 1988, p. 819-828. Sponsorship: Naturvetenskapliga Forskningsradet.

Mathematics

Logic

15

Atomic Spectra, Oxygen Spectra, Photodissociation, Schumann-Runge Bands, Absorption Cross Sections, Balloon Flight, Gas Density, Oxygen Atoms, Stratosphere

Scientific paper

The atomic oxygen production rates by photodissociation in the Schumann-Runge bands are recalculated using new spectroscopic information and the downward revision of the absorption cross-sections in the Herzberg continuum region. The results do not show large changes from the recommendations of the World Meteorological Organization (Frederick, 1986). However, results indicate a higher transmission in the 194-200 nm region. It is shown that standard parameterization of the dissociation rates with O2 column density as the independent variable would introduce errors on the order of 20 percent at high latitudes because of the seasonal variation in mesospheric and stratospheric temperatures and the associated variation in the effective cross-sections.

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