High-resolution absorption cross-section of glyoxal in the UV-vis and IR spectral ranges

The high-resolution spectra have been used to simulate deviations from Lambert-Beer's law, which occur at lower resolution when spectra are not fully resolved. Special attention has been paid to reduce the uncertainty of the UV-vis spectrum, allowing for an improved determination of the atmospheric photolysis of glyoxal. Finally, the new UV-vis spectrum has been used to redetermine our previous DOAS measurements of glyoxal yields from the reactions of OH radicals with benzene, toluene and p-xylene. The high-resolution spectral data can be obtained from http://iup.physik.uni-bremen.de/gruppen/molspec/index.html or email request to the authors.