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High accuracy CO2 line intensities determined from theory and experiment



Joseph T. Hodges, Oleg L. Polyansky, Katarzyna E. Bielska, Melanie C. Ghysels, Lorenzo Lodi, N Zobov, Jonathan Tennyson


The atmospheric concentration of carbon dioxide (CO2), with its consequences for the greenhouse effect and climate change, is being closely monitored by a variety of space-borne and ground-based remote sensing experiments. These experiments require a relative uncertainty of 0.5 % or better for CO2 line absorption intensities. Here we report a joint experimental and theoretical study providing rotation-vibration line intensities with this precision. The ab initio quantum mechanical calculations are extendible to all atmospherically important bands of CO2 and to its isotopically substituted variants.


carbon dioxide, greenhouse gas, ab initio calculations, cavity ring-down spectroscopy, line intensity, dipole moment surface


Hodges, J. , Polyansky, O. , Bielska, K. , Ghysels, M. , Lodi, L. , Zobov, N. and Tennyson, J. (2015), High accuracy CO2 line intensities determined from theory and experiment, Science, [online], (Accessed June 19, 2024)


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Created June 15, 2015, Updated November 10, 2018