Kaufmann, Robert K.Pretis, Felix2020-04-242020-04-242020-04Kaufmann, R.K., and Pretis, F., 2020, Data and code for: Testing Hypotheses About Glacial Dynamics and the Stage 11 Paradox Using a Statistical Model of Paleo-Climate. OpenBU, https://hdl.handle.net/2144/40340.https://hdl.handle.net/2144/40340These data and code can be used to reproduce the results described in the paper Testing Hypotheses About Glacial Dynamics and the Stage 11 Paradox Using a Statistical Model of Paleo-Climate that is submitted for peer review in Climate of the Past.To test hypotheses about glacial dynamics, the Mid-Brunhes event, and the stage 11 paradox, we evaluate the ability of a statistical model to simulate climate during the previous ~800,000 years. Throughout this period, the model simulates the timing and magnitude of glacial cycles, including the saw-tooth pattern in which ice accumulates gradually and ablates rapidly, without nonlinearities or threshold effects. This suggests that nonlinearities and/or threshold effects do not play a critical role in glacial cycles. Furthermore, model accuracy throughout the previous ~800,000 years suggest that changes in glacial cycles associated with the Mid-Brunhes event, which occurs near the division between the out-of-sample period and the in-sample period, are not caused by changes in the dynamics of the climate system. Conversely, poor model performance during MIS stage 11 and Termination V is consistent with arguments that the ‘stage 11 paradox’ represents a mismatch between orbital geometry and climate. Statistical orderings of simulation errors indicate that periods of reduced accuracy start with significant reductions in the model’s ability to simulate carbon dioxide, non-sea-salt sodium, and non-sea-salt calcium. Their importance suggests that the stage 11 paradox is generated by changes in atmospheric and/or oceanic circulation that affect ocean ventilation of carbon dioxide.en-USThis dataset is distributed under the terms of the Creative Commons Attribution-ShareAlike 4.0 License (http://creativecommons.org/licenses/by-sa/4.0/).http://creativecommons.org/licenses/by-sa/4.0/Glacial cyclesStage 11 paradoxMid-Brunhes eventTerminationsDataset