TY - JOUR AU - Claire Waelbroeck AU - A Paul AU - Michal Kucera AU - Rosell-Mel\ e AU - M Weinelt AU - R Schneider AU - A. Mix AU - A Abelmann AU - L. Armand AU - E. Bard AU - S. Barker AU - T.T. Barrows AU - H. Benway AU - I. Cacho AU - M.-T. Chen AU - Ian Croudace AU - X. Crosta AU - A. de Vernal AU - T. Dokken AU - J. Duprat AU - H. Elderfield AU - F. Eynaud AU - R. Gersonde AU - A. Hayes AU - M. Henry AU - C. Hillaire-Marcel AU - C.-C. Huang AU - E. Jansen AU - S. Juggins AU - N. Kallel AU - T. Kiefer AU - M. Kienast AU - L. Labeyrie AU - H. Leclaire AU - L. Londeix AU - S. Mangin AU - J. Matthiessen AU - F. Marret AU - M. Meland AU - A.E. Morey AU - S. Mulitza AU - U. Pflaumann AU - N.G. Pisias AU - T. Radi AU - A. Rochon AU - Eelco Rohling AU - L. Sbaffi AU - C. Schäfer-Neth AU - S. Solignac AU - H. Spero AU - K. Tachikawa AU - J.-L Turon AB -

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 simulations. 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. Since that time, several shortcomings of that earlier effort have become apparent. 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) project. 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 present.

BT - Nature Geoscience DA - 02/2009 M1 - 2 N1 - 10.1038/ngeo411 N2 -

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 simulations. 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. Since that time, several shortcomings of that earlier effort have become apparent. 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) project. 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 present.

PB - Nature Publishing Group PY - 2009 SN - 1752-0894 SP - 127 EP - 132 T2 - Nature Geoscience TI - Constraints on the magnitude and patterns of ocean cooling at the Last Glacial Maximum UR - http://dx.doi.org/10.1038/ngeo411 VL - 2 ER -