A machine learning examination of hydroxyl radical differences among model simulations for CCMI-1 - Nicely, J. M.; Duncan, B. N.; Hanisco, T. F.; Wolfe, G. M.; Salawitch, R. J.; Deushi, M.; Haslerud, A. S.; Jöckel, P.; Josse, B.; Kinnison, D. E.; Klekociuk, A.; Manyin, M. E.; et al. (Atmos. Chem. Phys., 2020)