MPG

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


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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 / Halogeno-alkanes+radicals / Freons-CFC(C,F,Cl) / CF2Cl2(CFC-12) / Merienne(1990)_240K_200-231nm

DATAFILE: CF2Cl2(CFC-12)_Merienne(1990)_240K_200-231nm.txt
NAME: difluorodichloromethane (CFC-12)
FORMULA: CF2Cl2(CFC-12)
AUTHOR(YEAR): Merienne(1990)
T: 240K
λ: 200-231nm
BIBLIOGRAPHY: M.F. Mérienne, B. Coquart, and A. Jenouvrier, "Temperature effect on the ultraviolet absorption of CFCl3, CF2Cl2, and N2O", Planet. Space Sci. 38, 617-625 (1990); DOI: 10.1016/0032-0633(90)90067-Z
COMMENTS: Argon plasma UV source, a 5 m multipass absorption cell, monochromator equipped with a photomultiplier; bandwidth 0.01-0.07 nm, data step 0.02 nm

Absorption cross sections at 1-nm intervals from Table 4

Parameterization of the temperature dependence valid over the wavelength range 200 to 231 nm and for temperatures between 220 and 296 K

ln σ(λ,T) = ∑ai (λ-200)i + (T-296) × ∑ bi(λ-200)i, n = 1-4

with the following parameters ai and bi:

------------------------------------------------------------
i   ai          bi
------------------------------------------------------------
1  -43.8954569      4.8438 × 10-3
2  -2.403597 × 10-1     4.96145 × 10-4
3  -4.2619 × 10-4     -5.6953 × 10-6
4   9.8743 × 10-6

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