The MPI-Mainz UV/VIS Spectral Atlas

of Gaseous Molecules of Atmospheric Interest

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

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1Satellite Group

2Atmospheric Chemistry Division

Max-Planck Institute for Chemistry
Mainz, Germany


Cross Sections

Quantum Yields


Contact, Impressum, Acknowledgements

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 / Halogeno-alkanes+radicals / Freons-CFC(C,F,Cl) / CF2Cl2(CFC-12) / Simon(1988)_230K_174-226nm(2nm)

DATAFILE: CF2Cl2(CFC-12)_Simon(1988)_230K_174-226nm(2nm).txt
NAME: difluorodichloromethane (CFC-12)
AUTHOR(YEAR): Simon(1988)
T: 230K
λ: 174-226nm(2nm)
BIBLIOGRAPHY: P.C. Simon, D. Gillotay, N. Vanlaethem-Meurée, and J. Wisemberg, "Ultraviolet absorption cross-sections of chloro- and chlorofluoro-methanes at stratospheric temperatures", Aeronomica Acta A 324, 1-55 (1988); J. Atmos. Chem. 7, 107-135 (1988); DOI: 10.1007/BF00048042
COMMENTS: Absorption measurements at 210 to 295 K using a single-beam equipment with a maximum resolution of 0.015 nm

Data selected at 2-nm intervals

Data also in the review article of

D. Gillotay and P.C. Simon, "Ultraviolet absorption cross-sections of photoactive species of stratospheric interest. Part 1: The Halocarbons", Aeronomica Acta A 356, 1-173 (1990)

Parameterization of the temperature dependence valid over the wavelength range 174 to 226 nm and for temperatures between 210 and 300 K:

log10 σ(λ,T) = ∑An λn + (T-273) × ∑ Bn λn, n = 0-4,

with the following parameters An and Bn:

n   An        Bn
0  -711.02         6.1648
1   12.490      -1.2093×10-1
2  -8.2865×10-2    8.8587×10-4
3   2.4091×10-4     -2.8743×10-6
4  -2.6113×10-7    3.4904×10-9

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