The MPI-Mainz UV/VIS Spectral Atlas

of Gaseous Molecules of Atmospheric Interest

www.uv-vis-spectral-atlas-mainz.org

Hannelore Keller-Rudek1, Geert K. Moortgat2, Rolf Sander2, Rüdiger Sörensen1

1Satellite Group

2Atmospheric Chemistry Division

Max-Planck Institute for Chemistry
Mainz, Germany

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When referring to the Spectral Atlas, please cite our publication:

Keller-Rudek, H., Moortgat, G. K., Sander, R., and Sörensen, R.: The MPI-Mainz UV/VIS spectral atlas of gaseous molecules of atmospheric interest, Earth Syst. Sci. Data, 5, 365–373, (2013), DOI: 10.5194/essd-5-365-2013

Cross Sections / Oxygen / O2 / DitchburnYoung(1962)_298K_185-200nm

DATAFILE: O2_DitchburnYoung(1962)_298K_185-200nm.txt
NAME: oxygen
FORMULA: O2
AUTHOR(YEAR): DitchburnYoung(1962)
T: 298K
λ: 185-200nm
BIBLIOGRAPHY: R.W. Ditchburn and P.A. Young, "The absorption of molecular oxygen between 1850 and 2500 Å", J. Atmos. Terr. Phys. 24, 127-139 (1962); DOI: 10.1016/0021-9169(62)90191-5
COMMENTS: Measurements with a grating spectrograph

A significant increase of the absorption cross sections with pressure is observed (probably due to the formation of the dimer O4)

The listed data are the cross sections σ0, i.e., extrapolated to zero pressure according to the expression

σ(p, λ) = σ0( λ) + p × ρ(λ)

The pressure coefficients are

--------------------------------
λ    ρ
(nm) (10-24 cm2/atm)
--------------------------------
185  200
190   89
195   34.5
200   14.5

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