Articles | Volume 20, issue 10
https://doi.org/10.5194/cp-20-2191-2024
https://doi.org/10.5194/cp-20-2191-2024
Research article
 | 
02 Oct 2024
Research article |  | 02 Oct 2024

Contrasting the Penultimate Glacial Maximum and the Last Glacial Maximum (140 and 21 ka) using coupled climate–ice sheet modelling

Violet L. Patterson, Lauren J. Gregoire, Ruza F. Ivanovic, Niall Gandy, Jonathan Owen, Robin S. Smith, Oliver G. Pollard, Lachlan C. Astfalck, and Paul J. Valdes

Related authors

Inferring flow energy, space scales, and timescales: freely drifting vs. fixed-point observations
Aurelien Luigi Serge Ponte, Lachlan C. Astfalck, Matthew D. Rayson, Andrew P. Zulberti, and Nicole L. Jones
Nonlin. Processes Geophys., 31, 571–586, https://doi.org/10.5194/npg-31-571-2024,https://doi.org/10.5194/npg-31-571-2024, 2024
Short summary
A global Data Assimilation of Moisture Patterns from 21 000–0 BP (DAMP-21ka) using lake level proxy records
Christopher L. Hancock, Michael P. Erb, Nicholas P. McKay, Sylvia G. Dee, and Ruza F. Ivanovic
Clim. Past, 20, 2663–2684, https://doi.org/10.5194/cp-20-2663-2024,https://doi.org/10.5194/cp-20-2663-2024, 2024
Short summary
Diagnosing the controls on desert dust emissions through the Phanerozoic
Yixuan Xie, Daniel J. Lunt, and Paul J. Valdes
Clim. Past, 20, 2561–2585, https://doi.org/10.5194/cp-20-2561-2024,https://doi.org/10.5194/cp-20-2561-2024, 2024
Short summary
Large-ensemble simulations of the North American and Greenland ice sheets at the Last Glacial Maximum with a coupled atmospheric general circulation–ice sheet model
Sam Sherriff-Tadano, Ruza Ivanovic, Lauren Gregoire, Charlotte Lang, Niall Gandy, Jonathan Gregory, Tamsin L. Edwards, Oliver Pollard, and Robin S. Smith
Clim. Past, 20, 1489–1512, https://doi.org/10.5194/cp-20-1489-2024,https://doi.org/10.5194/cp-20-1489-2024, 2024
Short summary
Patterns of changing surface climate variability from the Last Glacial Maximum to present in transient model simulations
Elisa Ziegler, Nils Weitzel, Jean-Philippe Baudouin, Marie-Luise Kapsch, Uwe Mikolajewicz, Lauren Gregoire, Ruza Ivanovic, Paul J. Valdes, Christian Wirths, and Kira Rehfeld
EGUsphere, https://doi.org/10.5194/egusphere-2024-1396,https://doi.org/10.5194/egusphere-2024-1396, 2024
Short summary

Related subject area

Subject: Climate Modelling | Archive: Modelling only | Timescale: Pleistocene
Contrasting responses of summer precipitation to orbital forcing in Japan and China over the past 450 kyr
Taiga Matsushita, Mariko Harada, Hiroaki Ueda, Takeshi Nakagawa, Yoshimi Kubota, Yoshiaki Suzuki, and Youichi Kamae
Clim. Past, 20, 2017–2029, https://doi.org/10.5194/cp-20-2017-2024,https://doi.org/10.5194/cp-20-2017-2024, 2024
Short summary
Stretched polar vortex increases mid-latitude climate variability during the Last Glacial Maximum
Yurui Zhang, Hans Renssen, Heikki Seppä, Zhen Li, and Xingrui Li
Clim. Past Discuss., https://doi.org/10.5194/cp-2024-46,https://doi.org/10.5194/cp-2024-46, 2024
Revised manuscript accepted for CP
Short summary
Investigating similarities and differences of the penultimate and last glacial terminations with a coupled ice sheet–climate model
Aurélien Quiquet and Didier M. Roche
Clim. Past, 20, 1365–1385, https://doi.org/10.5194/cp-20-1365-2024,https://doi.org/10.5194/cp-20-1365-2024, 2024
Short summary
Last Glacial Maximum climate and atmospheric circulation over the Australian region from climate models
Yanxuan Du, Josephine R. Brown, and J. M. Kale Sniderman
Clim. Past, 20, 393–413, https://doi.org/10.5194/cp-20-393-2024,https://doi.org/10.5194/cp-20-393-2024, 2024
Short summary
Uncertainties originating from GCM downscaling and bias correction with application to the MIS-11c Greenland Ice Sheet
Brian R. Crow, Lev Tarasov, Michael Schulz, and Matthias Prange
Clim. Past, 20, 281–296, https://doi.org/10.5194/cp-20-281-2024,https://doi.org/10.5194/cp-20-281-2024, 2024
Short summary

Cited articles

Abe-Ouchi, A., Segawa, T., and Saito, F.: Climatic Conditions for modelling the Northern Hemisphere ice sheets throughout the ice age cycle, Clim. Past, 3, 423–438, https://doi.org/10.5194/cp-3-423-2007, 2007. 
Abe-Ouchi, A., Saito, F., Kawamura, K., Raymo, M. E., Okuno, J., Takahashi, K., and Blatter, H.: Insolation-driven 100,000-year glacial cycles and hysteresis of ice-sheet volume, Nature, 500, 190–193, https://doi.org/10.1038/nature12374, 2013. 
Allen, J. R. M., Forrest, M., Hickler, T., Singarayer, J. S., Valdes, P. J., and Huntley, B.: Global vegetation patterns of the past 140,000 years, J. Biogeogr., 47, 2073–2090, https://doi.org/10.1111/jbi.13930, 2020. 
Astfalck, L., Williamson, D., Gandy, N., Gregoire, L., and Ivanovic, R.: Coexchangeable Process Modeling for Uncertainty Quantification in Joint Climate Reconstruction, J. Am. Stat. Assoc., 119, 1751–1764, https://doi.org/10.1080/01621459.2024.2325705, 2024. 
Batchelor, C. L., Margold, M., Krapp, M., Murton, D. K., Dalton, A. S., Gibbard, P. L., Stokes, C. R., Murton, J. B., and Manica, A.: The configuration of Northern Hemisphere ice sheets through the Quaternary, Nat. Commun., 10, 3713, https://doi.org/10.1038/s41467-019-11601-2, 2019. 
Download
Short summary
Simulations of the last two glacial periods are run using a computer model in which the atmosphere and ice sheets interact. The results show that the initial conditions used in the simulations are the primary reason for the difference in simulated North American ice sheet volume between each period. Thus, the climate leading up to the glacial maxima and other factors, such as vegetation, are important contributors to the differences in the ice sheets at the Last and Penultimate glacial maxima.