Articles | Volume 17, issue 2
https://doi.org/10.5194/cp-17-615-2021
https://doi.org/10.5194/cp-17-615-2021
Research article
 | 
11 Mar 2021
Research article |  | 11 Mar 2021

Simulated stability of the Atlantic Meridional Overturning Circulation during the Last Glacial Maximum

Frerk Pöppelmeier, Jeemijn Scheen, Aurich Jeltsch-Thömmes, and Thomas F. Stocker

Related authors

Sediment fluxes dominate glacial-interglacial changes in ocean carbon inventory: results from factorial simulations over the past 780,000 years
Markus Adloff, Aurich Jeltsch-Thömmes, Frerk Pöppelmeier, Thomas F. Stocker, and Fortunat Joos
EGUsphere, https://doi.org/10.5194/egusphere-2024-1754,https://doi.org/10.5194/egusphere-2024-1754, 2024
Short summary
Multiple thermal Atlantic Meridional Overturning Circulation thresholds in the intermediate complexity model Bern3D
Markus Adloff, Frerk Pöppelmeier, Aurich Jeltsch-Thömmes, Thomas F. Stocker, and Fortunat Joos
Clim. Past, 20, 1233–1250, https://doi.org/10.5194/cp-20-1233-2024,https://doi.org/10.5194/cp-20-1233-2024, 2024
Short summary
Simulating marine neodymium isotope distributions using Nd v1.0 coupled to the ocean component of the FAMOUS–MOSES1 climate model: sensitivities to reversible scavenging efficiency and benthic source distributions
Suzanne Robinson, Ruza F. Ivanovic, Lauren J. Gregoire, Julia Tindall, Tina van de Flierdt, Yves Plancherel, Frerk Pöppelmeier, Kazuyo Tachikawa, and Paul J. Valdes
Geosci. Model Dev., 16, 1231–1264, https://doi.org/10.5194/gmd-16-1231-2023,https://doi.org/10.5194/gmd-16-1231-2023, 2023
Short summary
Optimisation of the marine Nd isotope scheme in the ocean component of the FAMOUS general circulation model
Suzanne Robinson, Ruza Ivanovic, Lauren Gregoire, Lachlan Astfalck, Tina van de Flierdt, Yves Plancherel, Frerk Pöppelmeier, and Kazuyo Tachikawa
EGUsphere, https://doi.org/10.5194/egusphere-2022-937,https://doi.org/10.5194/egusphere-2022-937, 2022
Preprint archived
Short summary
Modeling the marine chromium cycle: new constraints on global-scale processes
Frerk Pöppelmeier, David J. Janssen, Samuel L. Jaccard, and Thomas F. Stocker
Biogeosciences, 18, 5447–5463, https://doi.org/10.5194/bg-18-5447-2021,https://doi.org/10.5194/bg-18-5447-2021, 2021
Short summary

Related subject area

Subject: Climate Modelling | Archive: Modelling only | Timescale: Pleistocene
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
Clim. Past, 20, 2191–2218, https://doi.org/10.5194/cp-20-2191-2024,https://doi.org/10.5194/cp-20-2191-2024, 2024
Short summary
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
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

Barker, S., Chen, J., Gong, X., Jonkers, L., Knorr, G., and Thornalley, D.: Icebergs not the trigger for North Atlantic cold events, Nature, 520, 333–336, https://doi.org/10.1038/nature14330, 2015. 
Berger, A. L.: Long-Term Variations of Daily Insolation and Quaternary Climatic Changes, J. Atmos. Sci., 35, 2362–2367, https://doi.org/10.1175/1520-0469(1978)035<2362:LTVODI>2.0.CO;2, 1978. 
Böhm, E., Lippold, J., Gutjahr, M., Frank, M., Blaser, P., Antz, B., Fohlmeister, J., Frank, N., Andersen, M. B., and Deininger, M.: Strong and deep Atlantic meridional overturning circulation during the last glacial cycle, Nature, 517, 73–76, https://doi.org/10.1038/nature14059, 2015. 
Braconnot, P., Harrison, S. P., Kageyama, M., Bartlein, P. J., Masson-Delmotte, V., Abe-Ouchi, A., Otto-Bliesner, B., and Zhao, Y.: Evaluation of climate models using palaeoclimatic data, Nat. Clim. Change, 2, 417–424, https://doi.org/10.1038/nclimate1456, 2012. 
Bradtmiller, L. I., McManus, J. F., and Robinson, L. F.: 231Pa/230Th evidence for a weakened but persistent Atlantic meridional overturning circulation during Heinrich Stadial 1, Nat. Commun., 5, 5817, https://doi.org/10.1038/ncomms6817, 2014. 
Download
Short summary
The stability of the Atlantic Meridional Overturning Circulation (AMOC) critically depends on its mean state. We simulate the response of the AMOC to North Atlantic freshwater perturbations under different glacial boundary conditions. We find that a closed Bering Strait greatly increases the AMOC's sensitivity to freshwater hosing. Further, the shift from mono- to bistability strongly depends on the chosen boundary conditions, with weaker circulation states exhibiting more abrupt transitions.