This dataset contains the primary data used as input parameters in a mechanistic stomatal CO₂ model (Franks et al., 2014 (Geophysical Research Letters)) and the Paleosol Barometer Uncertainty Quantifier (i.e., PBUQ; Breecker, 2013 (Geochemistry, Geophysics, Geosystems)), as well as age-adjusted CO₂ data from Montañez et al., 2016 (Nature Geoscience). The stomatal parameters were measured by Richey et al., 2020 (Climate Of The Past) and the paleosol parameters are revised from Montañez et al., 2007 (Science). These input parameters and previous age-adjusted CO₂ estimates were used to create a 40-Myr pCO₂ record for the Late Paleozoic Ice Age (LPIA) and its Permian demise.

See main text and supplemental materials and methods from:

Richey, J. D., Montañez, I. P., Goddéris, Y., Looy, C. V., Griffis, N. P., and Dimichele, W. A.: Influence of temporally varying weatherability on CO₂–climate coupling and ecosystem change in the late Paleozoic, Clim. Past., 16, 1759–1775, https://doi.org/10.5194/cp-16-1759-2020, 2020.

Montañez, I. P., Tabor, N. J., Niemeier, D., DiMichele, W. A., Frank, T. D., Fielding, C. R., Isbell, J. L., Birgenheier, L. P., and Rygel, M. C.: CO₂-forced climate and vegetation instability during Late Paleozoic deglaciation, Science, 315, 87–91, https://doi.org/10.1126/science.1134207, 2007.

Montañez, I. P., McElwain, J. C., Poulsen, C. J., White, J. D., Dimichele, W. A., Wilson, J. P., Griggs, G., and Hren, M. T.: Climate, pCO₂ and terrestrial carbon cycle linkages during late Palaeozoic glacial-interglacial cycles, Nat. Geosci., 9, 824–828, https://doi.org/10.1038/ngeo2822, 2016.

Brief descriptions of the input parameters and their calculation/source is included in the data set. For more information, see Richey, J. D., Montañez, I. P., Goddéris, Y., Looy, C. V., Griffis, N. P., and Dimichele, W. A.: Influence of temporally varying weatherability on CO₂–climate coupling and ecosystem change in the late Paleozoic, Clim. Past., 16, 1759–1775, https://doi.org/10.5194/cp-16-1759-2020, 2020.