Articles | Volume 10, issue 5
https://doi.org/10.5194/cp-10-1723-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/cp-10-1723-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
17 Sep 2014
Research article |
| 17 Sep 2014
The impacts of deglacial meltwater forcing on the South Atlantic Ocean deep circulation since the Last Glacial Maximum
J. M. Marson
Instituto Oceanográfico, Universidade de São Paulo, São Paulo, SP, Brazil
I. Wainer
Instituto Oceanográfico, Universidade de São Paulo, São Paulo, SP, Brazil
M. M. Mata
Instituto de Oceanografia, Universidade Federal de Rio Grande (FURG), Rio Grande, RS, Brazil
Center for Climatic Research and Department of Atmospheric and Oceanic Sciences, University of Wisconsin, Madison, Wisconsin, USA
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M. Azaneu, R. Kerr, and M. M. Mata
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P. X. Wang, B. Wang, H. Cheng, J. Fasullo, Z. T. Guo, T. Kiefer, and Z. Y. Liu
Clim. Past, 10, 2007–2052, https://doi.org/10.5194/cp-10-2007-2014, https://doi.org/10.5194/cp-10-2007-2014, 2014
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All regional monsoons belong to a cohesive global monsoon circulation system, albeit thateach regional subsystem has its own indigenous features. A comprehensive review of global monsoon variability reveals that regional monsoons can vary coherently across a range of timescales, from interannual up to orbital and tectonic. Study of monsoon variability from both global and regional perspectives is imperative and advantageous for integrated understanding of the modern and paleo-monsoon dynamics.
G.-S. Chen, Z. Liu, and J. E. Kutzbach
Clim. Past, 10, 1269–1275, https://doi.org/10.5194/cp-10-1269-2014, https://doi.org/10.5194/cp-10-1269-2014, 2014
T. S. Dotto, R. Kerr, M. M. Mata, M. Azaneu, I. Wainer, E. Fahrbach, and G. Rohardt
Ocean Sci., 10, 523–546, https://doi.org/10.5194/os-10-523-2014, https://doi.org/10.5194/os-10-523-2014, 2014
G.-J. Han, X.-F. Zhang, S. Zhang, X.-R. Wu, and Z. Liu
Nonlin. Processes Geophys., 21, 357–366, https://doi.org/10.5194/npg-21-357-2014, https://doi.org/10.5194/npg-21-357-2014, 2014
L. F. Prado, I. Wainer, C. M. Chiessi, M.-P. Ledru, and B. Turcq
Clim. Past, 9, 2117–2133, https://doi.org/10.5194/cp-9-2117-2013, https://doi.org/10.5194/cp-9-2117-2013, 2013
V. Meccia, I. Wainer, M. Tonelli, and E. Curchitser
Geosci. Model Dev., 6, 1209–1219, https://doi.org/10.5194/gmd-6-1209-2013, https://doi.org/10.5194/gmd-6-1209-2013, 2013
Related subject area
Subject: Ocean Dynamics | Archive: Modelling only | Timescale: Pleistocene
Glacial AMOC shoaling despite vigorous tidal dissipation: vertical stratification matters
The effect of greenhouse gas concentrations and ice sheets on the glacial AMOC in a coupled climate model
Impact of ice sheet meltwater fluxes on the climate evolution at the onset of the Last Interglacial
Yugeng Chen, Pengyang Song, Xianyao Chen, and Gerrit Lohmann
Clim. Past, 20, 2001–2015, https://doi.org/10.5194/cp-20-2001-2024, https://doi.org/10.5194/cp-20-2001-2024, 2024
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Our study examines the Atlantic Meridional Overturning Circulation (AMOC) during the Last Glacial Maximum (LGM), a period with higher tidal dissipation. Despite increased tidal mixing, our model simulations show that the AMOC remained relatively shallow, consistent with paleoproxy data and resolving previous inconsistencies between proxy data and model simulations. This research highlights the importance of strong ocean stratification during the LGM and its interaction with tidal mixing.
Marlene Klockmann, Uwe Mikolajewicz, and Jochem Marotzke
Clim. Past, 12, 1829–1846, https://doi.org/10.5194/cp-12-1829-2016, https://doi.org/10.5194/cp-12-1829-2016, 2016
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We study the response of the glacial AMOC to different forcings in a coupled AOGCM. The depth of the upper overturning cell remains almost unchanged in response to the full glacial forcing. This is the result of two opposing effects: a deepening due to the ice sheets and a shoaling due to the low GHG concentrations. Increased brine release in the Southern Ocean is key to the shoaling. With glacial ice sheets, a shallower cell can be simulated with GHG concentrations below the glacial level.
Heiko Goelzer, Philippe Huybrechts, Marie-France Loutre, and Thierry Fichefet
Clim. Past, 12, 1721–1737, https://doi.org/10.5194/cp-12-1721-2016, https://doi.org/10.5194/cp-12-1721-2016, 2016
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We have modelled the climate evolution from 135 to 120 kyr BP with an Earth system model to study the onset of the Last Interglacial warm period. Ice sheet changes and associated freshwater fluxes in both hemispheres constitute an important forcing in the simulations. Freshwater fluxes from the melting Antarctic ice sheet are found to lead to an oceanic cold event in the Southern Ocean as evidenced in some ocean sediment cores, which may be used to constrain the timing of ice sheet retreat.
Cited articles
Adkins, J. F.: The role of deep ocean circulation in setting glacial climates. Paleoceanography, 28(3), 539-561, 2013.
Adkins, J. F., McIntyre, K., and Schrag, D. P.: The salinity, temperature, and δ18O of the glacial deep ocean, Science, 298, 1769–1773, 2002.
Anderson, J. B., Kirshner, A. E., and Simms, A. R.: Constraints on Antarctic Ice Sheet configuration during and following the last glacial maximum and its episodic contribution to sea-level rise, Special Publications, 381, Geological Society, London, https://doi.org/10.1016/S0277-3791(01)00083-X, 2013.
Andrews, J. T., Jennings, A. E., Kerwin, M., Kirby, M., Manley, W., Miller, G. H., Bond, G., and MacLean, B.: A Heinrich-like event, H-0 (DC-0): Source (s) for detrital carbonate in the North Atlantic during the Younger Dryas Chronozone, Paleoceanography, 10, 943–952, 1995.
Bassett, S. E., Milne, G. A., Mitrovica, J. X., and Clark, P. U.: Ice sheet and solid earth influences on far-field sea-level histories, Science, 309, 925–928, 2005.
Bassett, S., Milne, G., Bentley, M., and Huybrechts, P.: Modelling Antarctic sea-level data to explore the possibility of a dominant Antarctic contribution to meltwater pulse IA, Quaternary Sci. Rev., 26, 2113–2127, 2007.
Bentley, M. J., Fogwill, C. J., Le Brocq, A. M., Hubbard, A. L., Sugden, D. E., Dunai, T. J., and Freeman, S. P.: Deglacial history of the West Antarctic Ice Sheet in the Weddell Sea embayment: constraints on past ice volume change, Geology, 38, 411–414, 2010.
Berger, A.: Long-term variations of daily insolation and Quaternary climatic changes, J. Atmos. Sci., 35, 2362–2367, 1978.
Bethke, I., Li, C., and Nisancioglu, K. H.: Can we use ice sheet reconstructions to constrain meltwater for deglacial simulations?, Paleoceanography, 27, PA2205, https://doi.org/10.1029/2011PA002258, 2012.
Boville, B. A. and Gent, P. R.: The NCAR climate system model, version one, J. Climate, 11, 1115–1130, 1998.
Boyle, E. A.: North Atlantic thermohaline circulation during the past 20,000 years linked to high-latitude surface temperature, Nature, 330, 35–40, https://doi.org/10.1038/330035a0, 1987.
Boyle, E. and Leach, H.: Last-glacial-maximum North Atlantic deep water: on, off or somewhere in-between? [and discussion], Philos. T. R. Soc. Lon. B, 348, 243–253, 1995.
Briegleb, B. P., Bitz, C. M., Hunke, E. C., Lipscomb, W. H., Holland, M. M., Schramm, J. L., and Moritz, R. E.: Scientific description of the sea ice component in the Community Climate System Model, version three, NCAR Tech, Note NCAR/TN-463STR, 70 pp, 2004.
Broecker, W. S.: Salinity history of the northern Atlantic during the last deglaciation, Paleoceanography, 5, 459–467, 1990.
Broecker, W. S.: Paleocean circulation during the last deglaciation: a bipolar seesaw?, Paleoceanography, 13, 119–121, 1998.
Broecker, W. S., Peteet, D. M., and Rind, D.: Does the ocean-atmosphere system have more than one stable mode of operation?, Nature, 315, 21–26, 1985.
Bryan, K.: Measurements of meridional heat transport by ocean currents, J. Geophys. Res., 67, 3403–3414, 1962.
Carlson, A. E.: Geochemical constraints on the Laurentide Ice Sheet contribution to meltwater pulse 1A, Quaternary Sci. Rev., 28, 1625–1630, 2009.
Carlson, A. E., Clark, P. U., Raisbeck, G. M., and Brook, E. J.: Rapid Holocene deglaciation of the Labrador sector of the Laurentide Ice Sheet, J. Climate, 20, 5126–5133, 2007.
Carlson, A. E., Ullman, D. J., Anslow, F. S., He, F., Clark, P. U., Liu, Z., and Otto-Bliesner, B. L.: Modeling the surface mass-balance response of the Laurentide Ice Sheet to Bølling warming and its contribution to Meltwater Pulse 1A, Earth Planet. Sc. Lett., 315, 24–29, 2012.
Charles, C. D., Lynch-Stieglitz, J., Ninnemann, U. S., and Fairbanks, R. G.: Climate connections between the hemispheres revealed by deep sea sediment core/ice core correlations, Earth Planet. Sci. Lett., 142, 19–27, 1996.
Cheng, W., Bitz, C. M., and Chiang, J. C.: Adjustment of the global climate to an abrupt slowdown of the Atlantic meridional overturning circulation, Geophys. Monogr. Ser., 173, 295–313, 2007.
Clark, P. U. and Mix, A. C.: Ice sheets and sea level of the Last Glacial Maximum, Quaternary Science Reviews, 21, 1–7, 2002.
Clark, P. U., Alley, R. B., Keigwin, L. D., Licciardi, J. M., Johnsen, S. J., and Wang, H.: Origin of the first global meltwater pulse following the last glacial maximum, Paleoceanography, 11, 563–577, 1996.
Clark, P. U., Marshall, S. J., Clarke, G. K., Hostetler, S. W., Licciardi, J. M., and Teller, J. T.: Freshwater forcing of abrupt climate change during the last glaciation, Science, 293, 283–287, 2001.
Clark, P. U., Mitrovica, J., Milne, G., and Tamisiea, M.: Sea-level fingerprinting as a direct test for the source of global meltwater pulse IA, Science, 295, 2438–2441, 2002.
Clauzet, G., Wainer, I., Lazar, A., Brady, E., and Otto-Bliesner, B.: A numerical study of the South Atlantic circulation at the Last Glacial Maximum, Palaeogeogr. Palaeocl., 253, 509–528, 2007.
Collins, W., Rasch, P., Boville, B., Hack, J., McCaa, J., Williamson, D., Briegleb, B., Bitz, C., Shian-Jiann, L., and Minghua, Z.: The Formulation and Atmospheric Simulation of the Community Atmosphere Model Version 3 (CAM3), J. Climate, 19, 2144–2161, 2006.
Curry, W. B. and Oppo, D. W.: Glacial water mass geometry and the distribution of δ13C of \chem{§igmaCO_2} in the western Atlantic Ocean, Paleoceanography, 20, PA1017, https://doi.org/10.1029/2004PA001021, 2005.
Curry, W. B., Marchitto, T. M., McManus, J. F., Oppo, D. W., and Laarkamp, K. L.: Millennial-scale changes in ventilation of the thermocline, intermediate, and deep waters of the glacial North Atlantic, Mechanisms of Global Climate Change at Millennial Time Scales, 59–76, 1999.
Dällenbach, A., Blunier, T., Flückiger, J., Stauffer, B., Chappellaz, J., and Raynaud, D.: Changes in the atmospheric CH4 gradient between Greenland and Antarctica during the Last Glacial and the transition to the Holocene, Geophys. Res. Lett., 27, 1005–1008, 2000.
Deschamps, P., Durand, N., Bard, E., Hamelin, B., Camoin, G., Thomas, A. L., Henderson, G. M., Okuno, J., and Yokoyama, Y.: Ice-sheet collapse and sea-level rise at the Bolling warming 14 600 years ago, Nature, 483, 559–564, 2012.
Duplessy, J., Shackleton, N., Fairbanks, R., Labeyrie, L., Oppo, D., and Kallel, N.: Deepwater source variations during the last climatic cycle and their impact on the global deepwater circulation, Paleoceanography, 3, 343–360, https://doi.org/10.1029/PA003i003p00343, 1988.
Fairbanks, R. G.: A 17, 000-year glacio-eustatic sea level record: influence of glacial melting rates on the Younger Dryas event and deep-ocean circulation, Nature, 342, 637–642, 1989.
Flückiger, J., Dällenbach, A., Blunier, T., Stauffer, B., Stocker, T. F., Raynaud, D., and Barnola, J. M.: Variations in atmospheric N2O concentration during abrupt climatic changes, Science, 285, 227–230, 1999.
Ganopolski, A. and Rahmstorf, S.: Rapid changes of glacial climate simulated in a coupled climate model, Nature, 409, 153–158, 2001.
Gent, P. R., Bryan, F. O., Danabasoglu, G., Lindsay, K., Tsumune, D., Hecht, M. W., and Doney, S. C.: Ocean chlorofluorocarbon and heat uptake during the twentieth century in the CCSM3, J. Climate, 19, 2366–2381, 2006.
Gregoire, L. J., Payne, A. J., and Valdes, P. J.: Deglacial rapid sea level rises caused by ice-sheet saddle collapses, Nature, 487, 219–222, 2012.
He, F.: Simulating transient climate evolution of the last deglaciation with CCSM3, Ph.D. thesis, University of Wisconsin, Madison, WI 53706, 2011.
He, F., Shakun, J. D., Clark, P. U., Carlson, A. E., Liu, Z., Otto-Bliesner, B. L., and Kutzbach, J. E.: Northern Hemisphere forcing of Southern Hemisphere climate during the last deglaciation, Nature, 494, 81–85, 2013.
Hughen, K. A., Overpeck, J. T., Lehman, S. J., Kashgarian, M., Southon, J., Peterson, L. C., Alley, R., and Sigman, D. M.: Deglacial changes in ocean circulation from an extended radiocarbon calibration, Nature, 391, 65–68, 1998.
Huybers, P. and Denton, G.: Antarctic temperature at orbital timescales controlled by local summer duration, Nat. Geosci., 1, 787–792, 2008.
Indermühle, A., Monnin, E., Stauffer, B., Stocker, T. F., and Wahlen, M.: Atmospheric CO2 concentration from 60 to 20 kyr BP from the Taylor Dome ice core, Antarctica, Geophys. Res. Lett., 27, 735–738, 2000.
Joos, F. and Spahni, R.: Rates of change in natural and anthropogenic radiative forcing over the past 20 000 years, P. Natl. Acad. Sci. USA, 105, 1425–1430, 2008.
Jouzel, J., Vaikmae, R., Petit, J., Martin, M., Duclos, Y., Stievenard, M., Lorius, C., Toots, M., Melieres, M., Burckle, L., Barkov, N., and Kotlyakov, V.: The two-step shape and timing of the last deglaciation in Antarctica, Clim. Dynam., 11, 151–161, https://doi.org/10.1007/BF00223498, 1995.
Kienast, M., Hanebuth, T. J., Pelejero, C., and Steinke, S.: Synchroneity of meltwater pulse 1a and the Bølling warming: new evidence from the South China Sea, Geology, 31, 67–70, 2003.
Licciardi, J. M., Teller, J. T., and Clark, P. U.: Freshwater routing by the Laurentide Ice Sheet during the last deglaciation, in: Mechanisms of Global Climate Change at Millennial Time Scales, 177–201, https://doi.org/10.1029/GM112p0177, American Geophysical Union, Washington, D. C., 1999.
Lippold, J., Luo, Y., Francois, R., Allen, S. E., Gherardi, J., Pichat, S., Hickey, B., and Schulz, H.: Strength and geometry of the glacial Atlantic Meridional Overturning Circulation, Nat. Geosci., 5, 813–816, https://doi.org/10.1038/ngeo1608, 2012.
Liu, Z., Shin, S., Webb, R., Lewis, W., and Otto-Bliesner, B.: Atmospheric CO2 forcing on glacial thermohaline circulation and climate, Geophys. Rett. Lett, 32, L02706, https://doi.org/10.1029/2004GL021929, 2005.
Liu, Z., Otto-Bliesner, B., He, F., Brady, E., Tomas, R., Clark, P., Carlson, A., Lynch-Stieglitz, J., Curry, W., Brook, E., Erickson, D., Jacob, R., Kutzbach, J., and Cheng, J.: Transient simulation of last deglaciation with a new mechanism for Bølling-Allerød warming, Science, 325, 310–314, 2009.
Lynch-Stieglitz, J., Curry, W. B., Oppo, D. W., Ninneman, U. S., Charles, C. D., and Munson, J.: Meridional overturning circulation in the South Atlantic at the last glacial maximum, Geochem. Geophys. Geosyst., 7, Q10N03, https://doi.org/10.1029/2005GC001226, 2006.
Mackintosh, A., Golledge, N., Domack, E., Dunbar, R., Leventer, A., White, D., Pollard, D., DeConto, R., Fink, D., Zwartz, D., Gore, D., and Lavoie, C.: Retreat of the East Antarctic ice sheet during the last glacial termination, Nature Geoscience, 4, 195–202, 2011.
Manabe, S. and Stouffer, R. J.: Coupled ocean-atmosphere model response to freshwater input: comparison to Younger Dryas event, Paleoceanography, 12, 321–336, 1997.
Marchitto, T. M. and Broecker, W. S.: Deep water mass geometry in the glacial Atlantic Ocean: a review of constraints from the paleonutrient proxy Cd/Ca, Geochem. Geophy. Geosy., 7, Q12003, https://doi.org/10.1029/2006GC001323, 2006.
Marchitto, T. M., Oppo, D. W., and Curry, W. B.: Paired benthic foraminiferal Cd/Ca and Zn/Ca evidence for a greatly increased presence of Southern Ocean Water in the glacial North Atlantic, Paleoceanography, 17, 10–1, https://doi.org/10.1029/2000PA000598, 2002.
McManus, J., Francois, R., Gherardi, J.-M., Keigwin, L., and Brown-Leger, S.: Collapse and rapid resumption of Atlantic meridional circulation linked to deglacial climate changes, Nature, 428, 834–837, 2004.
Menviel, L., Timmermann, A., Elison Timm, O., and Mouchet, A.: Deconstructing the Last Glacial termination: the role of millennial and orbital-scale forcings, Quat. Sci. Rev., 30, 1155–1172, 2011.
Menviel, L., England, M. H., Meissner, K. J., Mouchet, A., and Yu, J.: Atlantic-Pacific seesaw and its role in outgassing CO2 during Heinrich events, Paleoceanography, 29, 58–70, 2014.
Mikolajewicz, U.: Effect of meltwater input from the Antarctic ice sheet on the thermohaline circulation, Ann. Glaciol., 27, 311–315, 1998.
Monnin, E., Indermühle, A., Dällenbach, A., Flückiger, J., Stauffer, B., Stocker, T. F., Raynaud, D., and Barnola, J. M.: Atmospheric CO2 concentrations over the last glacial termination, Science, 291, 112–114, 2001.
Negre, C., Zahn, R., Thomas, A. L., Masqué, P., Henderson, G. M., Martínez-Méndez, G., Hall, I. R., and Mas, J. L.: Reversed flow of Atlantic deep water during the Last Glacial Maximum, Nature, 468, 84–88, 2010.
Otto-Bliesner, B. L., Brady, E. C., Clauzet, G., Tomas, R., Levis, S., and Kothavala, Z.: Last glacial maximum and Holocene climate in CCSM3, J. Climate, 19, 2526–2544, 2006.
Peltier, W. R.: Ice age paleotopography, Science, 265, 195–195, 1994.
Peltier, W.: Global glacial isostasy and the surface of the ice-age Earth: the ICE-5G (VM2) model and GRACE, Annu. Rev. Earth Planet. Sci., 32, 111–149, https://doi.org/10.1146/annurev.earth.32.082503.144359, 2004.
Peltier, W.: On the hemispheric origins of meltwater pulse 1a, Quaternary Sci. Rev., 24, 1655–1671, 2005.
Peltier, W. and Fairbanks, R. G.: Global glacial ice volume and Last Glacial Maximum duration from an extended Barbados sea level record, Quaternary Sci. Rev., 25, 3322–3337, 2006.
Piotrowski, A. M., Goldstein, S. L., Hemming, S. R., and Fairbanks, R. G.: Temporal relationships of carbon cycling and ocean circulation at glacial boundaries, Science, 307, 1933–1938, 2005.
Praetorius, S. K., McManus, J. F., Oppo, D. W., and Curry, W. B.: Episodic reductions in bottom-water currents since the last ice age, Nat. Geosci., 1, 449–452, 2008.
Rind, D., Demenocal, P., Russell, G. L., Sheth, S., Collins, D., Schmidt, G. A., and Teller, J.: Effects of glacial meltwater in the GISS Coupled Atmosphere-Ocean Model: Part I: North Atlantic Deep Water response, J. Geophys. Res., 106, 27355–27365, 2001.
Roberts, N. L., Piotrowski, A. M., McManus, J. F., and Keigwin, L. D.: Synchronous deglacial overturning and water mass source changes, Science, 327, 75–78, 2010.
Schneider von Deimling, T., Ganopolski, A., Held, H., and Rahmstorf, S.: How cold was the last glacial maximum?, Geophys. Res. Lett., 33, L14709, https://doi.org/10.1029/2006GL026484, 2006.
Seidov, D. and Maslin, M.: Atlantic ocean heat piracy and the bipolar climate see-saw during Heinrich and Dansgaard–Oeschger events, J. Quat. Sci., 16, 321–328, 2001.
Seidov, D., Barron, E., and Haupt, B. J.: Meltwater and the global ocean conveyor: northern versus southern connections, Global Planet. Change, 30, 257–270, 2001.
Shin, S.-I., Liu, Z., Otto-Bliesner, B., Brady, E., Kutzbach, J., and Harrison, S.: A simulation of the Last Glacial Maximum climate using the NCAR-CCSM, Clim. Dynam., 20, 127–151, https://doi.org/10.1007/s00382-002-0260-x, 2003.
Stanford, D., Rohling, E. J., Bacon, S., Roberts, A. P., Grousset, F. E., and Bolshaw, M.: A new concept for the paleoceanographic evolution of Heinrich event 1 in the North Atlantic, Quat. Sci. Rev., 30, 1047–1066, 2011.
Stanford, J. D., Rohling, E. J., Hunter, S. E., Roberts, A. P., Rasmussen, S. O., Bard, E., McManus, J., and Fairbanks, R. G.: Timing of meltwater pulse 1a and climate responses to meltwater injections, Paleoceanography, 21, PA4103, https://doi.org/10.1029/2006PA001340, 2006.
Stenni, B., Masson-Delmotte, V., Selmo, E., Oerter, H., Meyer, H., Röthlisberger, R., Jouzel, J., Cattani, O., Falourd, S., Fischer, H., Hoffmann, G., Iacumin, P., Johnsen, S., Minster, B., and Udisti, R.: The deuterium excess records of EPICA Dome C and Dronning Maud Land ice cores (East Antarctica), Quaternary Sci. Rev., 29, 146–159, 2010.
Stommel, H.: Thermohaline convection with two stable regimes of flow, Tellus, 13, 224–230, 1961.
Stott, L., Timmermann, A., and Thunell, R.: Southern hemisphere and deep-sea warming led deglacial atmospheric CO2 rise and tropical warming, Science, 318, 435–438, 2007.
Timmermann, A., Timm, O., Stott, L., and Menviel, L.: The Roles of CO2 and Orbital Forcing in Driving Southern Hemispheric Temperature Variations during the Last 21 000 Yr, J. Climate, 22, 1626–1640, 2009.
Wainer, I., Goes, M., Murphy, L. N., and Brady, E.: Changes in the intermediate water Mass Formation Rates in the Global Ocean for the Last Glacial Maximum, Mid-Holocene and Pre-Industrial Climates, Paleoceanography, 27, PA3101, https://doi.org/10.1029/2012PA002290, 2012.
Weaver, A. J., Saenko, O. A., Clark, P. U., and Mitrovica, J. X.: Meltwater pulse 1A from Antarctica as a trigger of the Bølling-Allerød warm interval, Science, 299, 1709–1713, 2003.
Yu, E.-F., Francois, R., and Bacon, M. P.: Similar rates of modern and last-glacial ocean thermohaline circulation inferred, Nature, 379, 689–694, https://doi.org/10.1038/379689a0, 1996.
Zahn, R., Schönfeld, J., Kudrass, H. R., Park, M. H., Erlenkeuser, H., and Grootes, P.: Thermohaline instability in the North Atlantic during meltwater events: Stable isotope and ice-rafted detritus records from Core SO75-26KL, Portuguese Margin, Paleoceanography, 12, 696–710, 1997.
Zhang, X., Lohmann, G., Knorr, G., and Xu, X.: Different ocean states and transient characteristics in Last Glacial Maximum simulations and implications for deglaciation, Clim. Past, 9, 2319–2333, https://doi.org/10.5194/cp-9-2319-2013, 2013.
