We find that the increased CO₂ concentration substantially increases the odds of the occurrence of subdaily precipitation extremes compared to the daily scale in most areas of the world, with the exception of some regions in the subtropics, likely in relation to the subsidence of the Hadley Cell. These results point to the large role that atmospheric CO₂ plays in extreme precipitation under an idealized framework.

Zhang, W., G. Villarini, E. Scoccimarro, and G.A. Vecchi, Stronger influences of increased CO₂ on sub-daily precipitation extremes than at the daily scale, Geophysical Research Letters, 44, 7464-7471, 2017.