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 / Nitrogen+compounds(N,H,O) / HONO2 / Schmidt(1972)_295K_320-440nm

DATAFILE: HONO2_Schmidt(1972)_295K_320-440nm.txt
NAME: nitric acid
FORMULA: HONO2
AUTHOR(YEAR): Schmidt(1972)
T: 295K
λ: 320-440nm
BIBLIOGRAPHY: S.C. Schmidt, R.C. Amme, D.G. Murcray, A. Goldman, and F.S. Bonomo, "Ultraviolet absorption by nitric acid vapour", Nature Phys. Sci. 238, 109 (1972); DOI: 10.1038/physci238109a0
COMMENTS: Absorption measurements using a scanning monochromator equipped with a hydrogen discharge light source and a photomultiplier tube

Absorption constants k (atm, 298 K)-1 cm-1 (base e) have been digitized from Fig. 1 (logarithmic plot) and converted to absorption cross sections (conversion factor 4.06×10-20)

Remark: Fig. 1 only shows "absorption intensity in cm-1" vs. wavelength; obviously k (atm, 298 K)-1 cm-1 (base e) was measured as compared to the plotted "absorption intensity" for O3 from

E.C.Y. Inn and Y. Tanaka, "Absorption coefficients of ozone in the ultraviolet and visible regions," J. Opt. Soc. Am. 43, 870-873 (1953); DOI: 10.1364/JOSA.43.000870, and

M. Griggs, "Absorption coefficients of ozone in the ultraviolet and visible regions," J. Chem. Phys. 49, 857-859 (1968); DOI: 10.1063/1.1670152

Remark: The high absorption presumably is due to NO2 impurities

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