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 / Halogen oxides / Cl oxides / Cl2O / Papanastasiou(2011)_248K_200-500nm

DATAFILE: Cl2O_Papanastasiou(2011)_248K_200-500nm.txt
NAME: dichlorine monoxide
FORMULA: Cl2O
AUTHOR(YEAR): Papanastasiou(2011)
T: 248K
λ: 200-500nm
BIBLIOGRAPHY: D.K. Papanastasiou, K.J. Feierabend, and J.B. Burkholder, "Cl2O photochemistry: Ultraviolet/vis absorption sprectrum temperature dependence and O(3P) quantum yield at 193 and 248 nm", J. Chem. Phys. 134, 204310-1 - 204310-12 (2011); DOI: 10.1063/1.3592662
COMMENTS: Absorption measurements over the temperature range 201-296 K using diode array spectroscopy (spectral resolution 1nm)

The absorption spectra at temperatures below 296 K were determined relative to the room temperature spectrum

The temperature dependence was parameterized using an empirical second-order polynomial at each wavelength

σ(λ, T) = σ(λ, 296 K) [1 + A1(λ) (T - 296) + A2(λ) (T - 296)2]

The absorption cross sections for T = 248 K have been calculated using the empirical polynomial and the values for σ(λ, 296 K), A1 and A2 listed in the datafile for T = 296 K.

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