Articles | Volume 17, issue 3
https://doi.org/10.5194/cp-17-1139-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-17-1139-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
07 Jun 2021
Research article |
| 07 Jun 2021
| 07 Jun 2021
Impact of Southern Ocean surface conditions on deep ocean circulation during the LGM: a model analysis
Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ-Université Paris-Saclay, 91198 Gif-sur-Yvette, France
Nathaëlle Bouttes
Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ-Université Paris-Saclay, 91198 Gif-sur-Yvette, France
Didier M. Roche
Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ-Université Paris-Saclay, 91198 Gif-sur-Yvette, France
Vrije Universiteit Amsterdam, Faculty of Science, Cluster Earth and Climate, de Boelelaan 1085, 1081HV Amsterdam, the Netherlands
Xavier Crosta
Université de Bordeaux, CNRS, EPHE, UMR 5805 EPOC, 33615 Pessac, France
Claire Waelbroeck
Laboratoire d'Océanographie et du Climat: Expérimentation et Approches Numériques (LOCEAN), IPSL, Université Pierre et Marie Curie, 75005 Paris, France
Didier Paillard
Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ-Université Paris-Saclay, 91198 Gif-sur-Yvette, France
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- Impact of Southern Ocean surface conditions on deep ocean circulation during the LGM: a model analysis F. Lhardy et al. 10.5194/cp-17-1139-2021
15 citations as recorded by crossref.
- Deglacial climate changes as forced by different ice sheet reconstructions N. Bouttes et al. 10.5194/cp-19-1027-2023
- Evolution of Atlantic Meridional Overturning Circulation since the last glaciation: model simulations and relevance to present and future Z. Liu 10.1098/rsta.2022.0190
- Evaluation of coastal pollution in Banda Aceh based on BOD5 and DO approach U. Wisha & V. Kurnianda 10.1088/1755-1315/869/1/012002
- Terrestrial amplification of past, present, and future climate change A. Seltzer et al. 10.1126/sciadv.adf8119
- The Earth system model CLIMBER-X v1.0 – Part 1: Climate model description and validation M. Willeit et al. 10.5194/gmd-15-5905-2022
- Antarctic sea ice over the past 130 000 years – Part 1: a review of what proxy records tell us X. Crosta et al. 10.5194/cp-18-1729-2022
- Climate and ice sheet evolutions from the last glacial maximum to the pre-industrial period with an ice-sheet–climate coupled model A. Quiquet et al. 10.5194/cp-17-2179-2021
- Using a multi-layer snow model for transient paleo-studies: surface mass balance evolution during the Last Interglacial T. Hoang et al. 10.5194/cp-21-27-2025
- Dansgaard–Oeschger events in climate models: review and baseline Marine Isotope Stage 3 (MIS3) protocol I. Malmierca-Vallet & L. Sime 10.5194/cp-19-915-2023
- Implementing the iCORAL (version 1.0) coral reef CaCO3 production module in the iLOVECLIM climate model N. Bouttes et al. 10.5194/gmd-17-6513-2024
- Investigating similarities and differences of the penultimate and last glacial terminations with a coupled ice sheet–climate model A. Quiquet & D. Roche 10.5194/cp-20-1365-2024
- Interannual variation of summer sea surface temperature in the Amundsen Sea, Antarctica L. Yu et al. 10.3389/fmars.2023.1050955
- Variability of sea ice concentration over Antarctica during recent decade S. Sahoo et al. 10.1007/s12040-024-02460-7
- Evaluating seasonal sea-ice cover over the Southern Ocean at the Last Glacial Maximum R. Green et al. 10.5194/cp-18-845-2022
- Deglacial and Holocene sea-ice and climate dynamics in the Bransfield Strait, northern Antarctic Peninsula M. Vorrath et al. 10.5194/cp-19-1061-2023
3 citations as recorded by crossref.
- The PMIP4 Last Glacial Maximum experiments: preliminary results and comparison with the PMIP3 simulations M. Kageyama et al. 10.5194/cp-17-1065-2021
- A First Intercomparison of the Simulated LGM Carbon Results Within PMIP‐Carbon: Role of the Ocean Boundary Conditions F. Lhardy et al. 10.1029/2021PA004302
- Impact of Southern Ocean surface conditions on deep ocean circulation during the LGM: a model analysis F. Lhardy et al. 10.5194/cp-17-1139-2021
Latest update: 18 Jan 2025
Short summary
Climate models struggle to simulate a LGM ocean circulation in agreement with paleotracer data. Using a set of simulations, we test the impact of boundary conditions and other modelling choices. Model–data comparisons of sea-surface temperatures and sea-ice cover support an overall cold Southern Ocean, with implications on the AMOC strength. Changes in implemented boundary conditions are not sufficient to simulate a shallower AMOC; other mechanisms to better represent convection are required.
Climate models struggle to simulate a LGM ocean circulation in agreement with paleotracer data....
