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) / JPL-2015(2015)_298K_170-240nm(rec)

DATAFILE: CF2Cl2(CFC-12)_JPL-2015(2015)_298K_170-240nm(rec).txt
NAME: difluorodichloromethane (CFC-12)
FORMULA: CF2Cl2(CFC-12)
AUTHOR(YEAR): JPL-2015(2015)
T: 298K
λ: 170-240nm(rec)
BIBLIOGRAPHY: J. B. Burkholder, S. P. Sander, J. Abbatt, J. R. Barker, R. E. Huie, C. E. Kolb, M. J. Kurylo, V. L. Orkin, D. M. Wilmouth, and P. H. Wine, "Chemical Kinetics and Photochemical Data for Use in Atmospheric Studies, Evaluation No. 18", JPL Publication 15-10, Jet Propulsion Laboratory, Pasadena, 2015 http://jpldataeval.jpl.nasa.gov
COMMENTS: JPL-2015(2015) recommendation:

The earlier recommendations for the absorption cross sections (JPL.2002, JPL-2006, JPL-2010) habe been adopted

170-172 nm, data of

C. Hubrich, C. Zetzsch, and F. Stuhl, "Absorptionsspektren von halogenierten Methanen im Bereich von 275 bis 160 nm bei Temperaturen von 298 und 208 K," Ber. Bunsenges. Phys. Chem. 81, 437-442 (1977); DOI: 10.1002/bbpc.19770810417,

174-178 nm, mean of the data of

C. Hubrich, C. Zetzsch, and F. Stuhl, "Absorptionsspektren von halogenierten Methanen im Bereich von 275 bis 160 nm bei Temperaturen von 298 und 208 K," Ber. Bunsenges. Phys. Chem. 81, 437-442 (1977); DOI: 10.1002/bbpc.19770810417, and

P.C. Simon, D. Gillotay, N. Vanlaethem-Meurée, and J. Wisemberg, "Ultraviolet absorption cross-sections of chloro- and chlorofluoro-methanes at stratospheric temperatures," J. Atmos. Chem. 7, 107-135 (1988); DOI: 10.1007/BF00048042; Aeronomica Acta A 324, 1-55 (1988),

180-198 nm, data of

P.C. Simon, D. Gillotay, N. Vanlaethem-Meurée, and J. Wisemberg, "Ultraviolet absorption cross-sections of chloro- and chlorofluoro-methanes at stratospheric temperatures," J. Atmos. Chem. 7, 107-135 (1988); DOI: 10.1007/BF00048042; Aeronomica Acta A 324, 1-55 (1988),

200-230 nm, mean of the data of

P.C. Simon, D. Gillotay, N. Vanlaethem-Meurée, and J. Wisemberg, "Ultraviolet absorption cross-sections of chloro- and chlorofluoro-methanes at stratospheric temperatures," J. Atmos. Chem. 7, 107-135 (1988); DOI: 10.1007/BF00048042; Aeronomica Acta A 324, 1-55 (1988), and

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,

232-240 nm, extrapolation of the Mérienne et al. (1990) data,
log σ(λ) = 2.1448–0.1061 λ

The parameterization of the temperature dependence (220-296 K, 200-231 nm) using an empirical polynomial expansion:

ln σ(λ, T) = ∑an (λ–200)n + (T–296) × ∑bn(λ–200)n, n = 0-3

with the following parameters an and bn:

a0 = –43.8954569    b0 = 4.8438 × 10–3
a1 = –2.403597 × 10–1  b1 = 4.96145 × 10–4
a3 = –4.2619 × 10–4   b2 = –5.6953 × 10–6
a3 = 9.8743 × 10–6

given by Mérienne et al. (1990) is recommended

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