Planetary energy budget during abrupt glacial climate events set by Atlantic Ocean heat valve

During Pleistocene Ice Ages, abrupt climate changes co-occurred with switches in Atlantic Meridional Overturning Circulation (AMOC) strength. Here we archive output from three atmosphere-ocean coupled general circulation models of spontaneous (i.e., unforced) self-sustained millennial-scale AMOC oscillations that closely resemble paleoclimatic observations. These model simulations were used in Buizert et al. (2026) to illustrate a new framework of global climate compling during the Dansgaard-Oeschger cycle. The three models are (1) The Community Climate System Model version 4 (CCSM4); (2) The Model for Interdisciplinary Research on Climate version 4m (MIROC4m); (3) The COSMOS model that combines the ECHAM5 atmopshere model, the JSBACH land surface model, and the MPI-OM ocean model. The model simulations have been used in prior studies, namely Vettoretti et al. (2023) for the CCSM4 model, Kuniyoshi et al. (2022) for the MIROC4m model, and Zhang et al. (2021) for the COSMOS model. For more detaills we refer the Methods section of Buizert et al. (2026), and the original references from those prior studies. Note that the variables archived here are only those used in Buizert et al. (2026), and other model output variables can be found with the original studies. References: Buizert, C., Abe-Ouchi, A., Vettoretti, G., Zhang, X., Kuniyoshi, Y., Shackleton, S., Rasmussen, S. O., Pedro, J. B., Galbraith, E. D., and Stocker, T. F. (2026). Planetary energy budget during abrupt glacial climate events set by Atlantic Ocean heat valve, Nature Geoscience, in pressKuniyoshi, Y., Abe-Ouchi, A., Sherriff-Tadano, S., Chan, W.-L., and Saito, F. (2022). Effect of Climatic Precession on Dansgaard-Oeschger-Like Oscillations. Geophysical Research Letters, 49(6), e2021GL095695. https://doi.org/10.1029/2021GL095695. https://doi.org/10.1029/2021GL095695Vettoretti, G., Ditlevsen, P., Jochum, M., and Rasmussen, S. O. (2022). Atmospheric CO2 control of spontaneous millennial-scale ice age climate oscillations. Nature Geoscience, 15(4), 300-306. https://doi.org/10.1038/s41561-022-00920-7Zhang, X., Barker, S., Knorr, G., Lohmann, G., Drysdale, R., Sun, Y., Hodell, D., and Fahu, C. (2021). Direct astronomical influence on abrupt climate variability. Nature Geoscience, 14(11), 819-826. https://doi.org/10.1038/s41561-021-00846-6