The dataset contains NorESM2-MM simulations for the SOFIA antwater experiment (https://sofiamip.github.io/ and https://doi.org/10.5194/gmd-16-7289-2023). Simulations were run over several legs, and comprise two ensemble members (one run on betzy at Sigma2/Norway and one run on derecho at UCAR/USA). We provide raw outputs from NorESM. Full details are provided in the ReadMe file. Acknowledgements: This work was supported by OCEAN:ICE, which is funded by the European Union, Horizon Europe Funding Programme for research and innovation under grant agreement no. 101060452. Simulations marked 'Betzy' were performed on resources provided by Sigma2 - the National Infrastructure for High-Performance Computing and Data Storage in Norway (Project NN11028K). For simulations marked 'derecho' we would like to acknowledge high-performance computing support from the Derecho system (doi:10.5065/qx9a-pg09) provided by the NSF National Center for Atmospheric Research (NCAR), sponsored by the National Science Foundation.