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arXiv · 1510.05105

High accuracy CO$_2$ line intensities determined from theory and experiment

Oleg L. Polyansky·Katarzyna Bielska·Mélanie Ghysels·Lorenzo Lodi·Nikolai F. Zobov·Joseph T. Hodges·Jonathan Tennyson
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Abstract

Atmospheric CO$_2$ concentrations are being closely monitored by remote sensing experiments which rely on knowing line intensities with an uncertainty of 0.5\%\ or better. Most available laboratory measurements have uncertainties much larger than this. We report a joint experimental and theoretical study providing rotation-vibration line intensities with the required accuracy. The {\it ab initio} calculations are extendible to all atmospherically important bands of CO$_2$ and to its isotologues. As such they will form the basis for detailed CO$_2$ spectroscopic line lists for future studies.

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Oleg L. Polyansky, Katarzyna Bielska, Mélanie Ghysels, Lorenzo Lodi, Nikolai F. Zobov, Joseph T. Hodges, Jonathan Tennyson. 2015-10-17. High accuracy CO$_2$ line intensities determined from theory and experiment. https://doi.org/10.1103/physrevlett.114.243001

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