Title: Woelfle et al. (2019) data Description: Climatology and atmospheric monthly mean data used for the paper “Evolution of the double-ITCZ bias through CESM2 development” by Woelfle et al. This study explores the evolution of the double-ITCZ bias across the CESM2.0 development process. The data for this study consists of fully coupled model simulations generated during the development of CESM2.0 and prescribed SST simulations design to explore the differences between the atmosphere models of version 119 and version 125. Citation format: Woelfle, M. D., Bretherton, C. S., Hannay, C., & Neale, R. (2019). Woelfle et al. (2019) data [Data set]. UCAR/NCAR - Earth System Grid. https://doi.org/10.5065/73AM-EH65 Metadata URL: https://www.earthsystemgrid.org/dataset/id/11073774-fa38-4dfa-8310-5db935413569.html