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-HCFC(C,H,F,Cl) / CHFCl2(HCFC-21) / Simon(1988)_230K_174-222nm(2nm)

DATAFILE: CHFCl2(HCFC-21)_Simon(1988)_230K_174-222nm(2nm).txt
NAME: fluorodichloromethane (HCFC-21)
AUTHOR(YEAR): Simon(1988)
T: 230K
λ: 174-222nm(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 174-222 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  -514.56      -3.0577
1   8.7940       6.6539×10-2
2  -5.6840×10-2   -5.3964×10-4
3   1.5894×10-4    1.9322×10-6
4  -1.6345×10-7     -2.5754×10-9

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