SO₂ absorption cross sections in the UV-visible region

This dataset contains laboratory absorption cross sections of sulfur dioxide (SO₂) measured by Fourier transform spectroscopy in the UV-visible spectral region. It gathers data associated with three publications, including measurements at different spectral resolutions and temperatures.

1994 dataset

The txt files so2_2.nm, so2_2.nu, so2_16.nm and so2_16.nu contain SO₂ absorption cross sections measured at 296 K using a 21.1 cm absorption cell and a UV-diode detector. The spectra are provided at resolutions of 2 and 16 cm⁻¹.
For each resolution, the data are provided in two formats: nm files give air wavelength (nm) in the first column, while nu files give wavenumber in air (cm⁻¹). The second column contains the SO₂ absorption cross section. For the wavelength files, the wavelength scale was derived from the wavenumber scale and resampled to obtain a constant wavelength spacing.

2009 dataset

The txt files SO2_298K_24000-44000, SO2_318K_24000-44000, SO2_338K_24000-44000 and SO2_358K_24000-44000 contain SO₂ absorption cross sections covering 24000–44000 cm⁻¹ (approximately 227–420 nm). They combine the spectral regions reported in the two companion publications: 24000–29000 cm⁻¹ (345–420 nm) and 29000–44000 cm⁻¹ (227–345 nm).
Each 2009 data file contains six columns: wavenumber in air (cm⁻¹), absorption cross section (×10⁻¹⁸ cm² molecule⁻¹), systematic error (%), non-systematic error (×10⁻¹⁸ cm² molecule⁻¹), standard deviation (×10⁻¹⁸ cm² molecule⁻¹), and the number of individual absorption cross sections averaged to obtain each value.

Data and Resources

Tags

Cite this as (APA format)

10.18758/squym2ox

Users of this DOI are kindly encouraged to contact the author(s) for help and cooperation towards further successful utilisation.

Author(s)
Principal

Robert, Séverineorcid, Royal Belgian Institute for Space Aeronomy
Other(s)

Vandaele, Ann Carineorcid, Royal Belgian Institute for Space Aeronomy;

Contact data-contact of Royal Belgian Institute for Space Aeronomy

Technical info
Is referenced by

Richard, C., Gordon, I. E., Rothman, L. S., Abel, M., Frommhold, L., Gustafsson, M., Hartmann, J.-M., Hermans, C., Lafferty, W. J., Orton, G. S., Smith, K. M., Tran, H. (2012). New section of the HITRAN database: Collision-induced absorption (CIA). Journal of Quantitative Spectroscopy and Radiative Transfer, 113(11), 1276-1285. https://doi.org/10.1016/j.jqsrt.2011.11.004 (Belgian institutional Open Access repository for Federal Science)

Documentation

Temporal features
Starting

1994
Ending

2009

Additional info
Repository homepage

https://data.aeronomie.be/dataset/
Last Updated

September 15, 2026
Created

February 6, 2026

Spatial features

No spatial information