Observation-based reconstructions of sea surface temperature from relatively stable periods in the past, such as the Last Glacial Maximum, represent an important means of constraining climate sensitivity and evaluating model simulations1. The first quantitative global reconstruction of sea surface temperatures during the Last Glacial Maximum was developed by the Climate Long-Range Investigation, Mapping and Prediction (CLIMAP) project in the 1970s and 1980s (refs 2, 3). Since that time, several shortcomings of that earlier effort have become apparent4. Here we present an updated synthesis of sea surface temperatures during the Last Glacial Maximum, rigorously defined as the period between 23 and 19 thousand years before present, from the Multiproxy Approach for the Reconstruction of the Glacial Ocean Surface (MARGO) project5. We integrate microfossil and geochemical reconstructions of surface temperatures and include assessments of the reliability of individual records. Our reconstruction reveals the presence of large longitudinal gradients in sea surface temperature in all of the ocean basins, in contrast to the simulations of the Last Glacial Maximum climate available at present6,7.
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Crucifix, M. Does the Last Glacial Maximum constrain climate sensitivity? Geophys. Res. Lett. 33, 10.1029/2006GL027137 (2006).
CLIMAP Project Members.The surface of the ice-age Earth. Science 191, 1131–1137 (1976).
CLIMAP Project Members. Seasonal reconstruction of the Earth’s surface at the last glacial maximum (Map Chart Ser. MC-36, Geol. Soc. Am., 1981).
Mix, A. C., Bard, E. & Schneider, R. Environmental processes of the ice ages: Land, oceans, glaciers (EPILOG). Quat. Sci. Rev. 20, 627–657 (2001).
Kucera, M., Rosell-Melé, A., Schneider, R., Waelbroeck, C. & Weinelt, M. Multiproxy approach for the reconstruction of the glacial ocean surface (MARGO). Quat. Sci. Rev. 24, 813–819 (2005).
Kageyama, M. et al. Last Glacial Maximum temperatures over the North Atlantic, Europe and western Siberia: A comparison between PMIP models, MARGO sea–surface temperatures and pollen-based reconstructions. Quat. Sci. Rev. 25, 2082–2102 (2006).
Braconnot, P. et al. Results of PMIP2 coupled simulations of the Mid-Holocene and Last Glacial Maximum—Part 1: Experiments and large-scale features. Clim. Past 3, 261–277 (2007).
Bard, E., Rostek, F. & Sonzogni, C. Interhemispheric synchrony of the last deglaciation inferred from alkenone paleothermometry. Nature 385, 707–710 (1997).
Trend-Staid, M. & Prell, W. L. Sea surface temperature at the Last Glacial Maximum: A reconstruction using the modern analog technique. Paleoceanography 17, 10.1029/2000PA000506 (2002).
Rosell-Melé, A. et al. Sea surface temperature anomalies in the oceans at the LGM estimated from the alkenone- index: Comparison with GCMs. Geophys. Res. Lett. 31, L03208 (2004).
Pflaumann, U. et al. Glacial North Atlantic: Sea-surface conditions reconstructed by GLAMAP 2000. Paleoceanography 18, 10.1029/2002PA000774 (2003).
World Ocean Atlas 1998: <http://ingrid.ldeo.columbia.edu/SOURCES/.NOAA/.NODC/.WOA98/> (NODC, Silver Springs, 1998).
de Vernal, A. et al. Comparing proxies for the reconstruction of LGM sea-surface conditions in the northern North Atlantic. Quat. Sci. Rev. 25, 2820–2834 (2006).
Meland, M. Y., Jansen, E. & Elderfield, H. Constraints on SST estimates for the northern North Atlantic/Nordic Seas during the LGM. Quat. Sci. Rev. 24, 835–852 (2005).
Minoshima, K., Kawahata, H. & Ikehara, K. Changes in biological production in the mixed water region (MWR) of the northwestern North Pacific during the last 27 kyr. Palaeogeogr. Palaeoclimatol. Palaeoecol. 254, 430–447 (2007).
Large, W. G. & Danabasoglu, Attribution and impacts of upper ocean biases in CCSM3. J. Clim. 19, 2325–2346 (2006).
Solomon, S. et al. in Climate Change 2007, Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (eds Solomon, S. et al.) 19–91 (Cambridge Univ. Press, 2007).
Kucera, M. et al. Reconstruction of the glacial Atlantic and Pacific sea-surface temperatures from assemblages of planktonic foraminifera: Multi-technique approach based on geographically constrained calibration datasets. Quat. Sci. Rev. 24, 951–998 (2005).
Barrows, T. T. & Juggins, S. Sea-surface temperatures around the Australian margin and Indian Ocean during the Last Glacial Maximum. Quat. Sci. Rev. 24, 1017–1047 (2005).
Barker, S., Cacho, I., Benway, H. & Tachikawa, K. Planktonic foraminiferal Mg/Ca as a proxy for past oceanic temperatures: A methodological overview and data compilation for the Last Glacial Maximum. Quat. Sci. Rev. 24, 821–834 (2005).
Lamy, F. et al. Antarctic timing of surface water changes off Chile and Patagonian ice sheet response. Science 304, 1959–1962 (2004).
Kaiser, J., Lamy, F. & Hebbeln, D. A 70-kyr sea surface temperature record off southern Chile (Ocean Drilling Program Site 1233). Paleoceanography 20, 10.1029/2005PA001146 (2005).
Feldberg, M. J. & Mix, A. C. Sea-surface temperature estimates in the Southeast Pacific based on planktonic foraminiferal species; modern calibration and Last Glacial Maximum. Mar. Micropaleontol. 849, 1–29 (2002).
Sarnthein, M. et al. Overview of Glacial Atlantic Ocean Mapping (GLAMAP 2000). Paleoceanography 18, 10.1029/2002PA000769 (2003).
Paul, A. & Schäfer-Neth, C. in The South Atlantic in the Late Quaternary: Reconstruction of Material Budgets and Current Systems (eds Wefer, G., Mulitza, S. & Ratmeyer, V.) 549–583 (Springer, 2004).
Gersonde, R., Crosta, X., Abelmann, A. & Armand, L. K. Sea surface temperature and sea ice distribution of the last glacial Southern Ocean—A circum-Antarctic view based on siliceous microfossil records. Quat. Sci. Rev. 24, 869–896 (2005).
Schneider von Deimling, T., Held, H., Ganopolski, A. & Rahmstorf, S. Climate sensitivity estimated from ensemble simulations of glacial climate. Clim. Dyn. 27, 149–163 (2006).
Schäfer-Neth, C. & Paul, A. in The South Atlantic in the Late Quaternary: Material Budget and Current Systems (eds Wefer, G., Mulitza, S. & Ratmeyer, V.) 531–548 (Springer, 2004).
Hargreaves, J. C., Abe-Ouchi, A. & Annan, J. D. Linking glacial and future climates through an ensemble of GCM simulations. Clim. Past 3, 77–87 (2007).
Wessel, P. & Smith, W. H. F. New improved version of Generic Mapping Tools released. EOS, Trans. Am. Geophys. Union 79, 579 (1998).
We are grateful to M. Kageyama, C. Dumas and J. Y. Peterschmitt for assistance with PMIP2 output files. We thank the HANSE Advanced Study Institute for hosting the first international MARGO workshop in Delmenhorst, Germany, in September 2002 and Fundació Abertis for hosting the second MARGO workshop in Castellet i la Gornal, Spain, in September 2003. We warmly thank the IGBP-PAGES project for its support. The MARGO project is an outcome of the EPILOG working group of IMAGES. C.W. is financially supported by CNRS and INSU.
*A full list of authors and their affiliations appears at the end of the paper
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Waelbroeck, C., Paul, A., Kucera, M. et al. Constraints on the magnitude and patterns of ocean cooling at the Last Glacial Maximum. Nature Geosci 2, 127–132 (2009). https://doi.org/10.1038/ngeo411
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