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Your search keyword '"Lecavalier, Benoit S."' showing total 18 results
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18 results on '"Lecavalier, Benoit S."'

2. Antarctic Ice Sheet paleo-constraint database

Author

Lecavalier, Benoit S., primary, Tarasov, Lev, additional, Balco, Greg, additional, Spector, Perry, additional, Hillenbrand, Claus-Dieter, additional, Buizert, Christo, additional, Ritz, Catherine, additional, Leduc-Leballeur, Marion, additional, Mulvaney, Robert, additional, Whitehouse, Pippa L., additional, Bentley, Michael J., additional, and Bamber, Jonathan, additional

Published
2023
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3. Greenland temperature response to climate forcing during the last deglaciation

Author

Buizert, Christo, Gkinis, Vasileios, Severinghaus, Jeffrey P, He, Feng, Lecavalier, Benoit S, Kindler, Philippe, Leuenberger, Markus, Carlson, Anders E, Vinther, Bo, Masson-Delmotte, Valérie, White, James WC, Liu, Zhengyu, Otto-Bliesner, Bette, and Brook, Edward J

Subjects
Earth Sciences, Physical Geography and Environmental Geoscience, Geology, Climate Action, Climate Change, Computer Simulation, Freezing, Greenland, Ice Cover, Models, Theoretical, Oxygen Isotopes, Temperature, General Science & Technology
Abstract

Greenland ice core water isotopic composition (δ(18)O) provides detailed evidence for abrupt climate changes but is by itself insufficient for quantitative reconstruction of past temperatures and their spatial patterns. We investigate Greenland temperature evolution during the last deglaciation using independent reconstructions from three ice cores and simulations with a coupled ocean-atmosphere climate model. Contrary to the traditional δ(18)O interpretation, the Younger Dryas period was 4.5° ± 2°C warmer than the Oldest Dryas, due to increased carbon dioxide forcing and summer insolation. The magnitude of abrupt temperature changes is larger in central Greenland (9° to 14°C) than in the northwest (5° to 9°C), fingerprinting a North Atlantic origin. Simulated changes in temperature seasonality closely track changes in the Atlantic overturning strength and support the hypothesis that abrupt climate change is mostly a winter phenomenon.

Published
2014

5. Mass balance of the Greenland and Antarctic ice sheets from 1992 to 2020

Author

Otosaka, Inès N., primary, Shepherd, Andrew, additional, Ivins, Erik R., additional, Schlegel, Nicole-Jeanne, additional, Amory, Charles, additional, van den Broeke, Michiel R., additional, Horwath, Martin, additional, Joughin, Ian, additional, King, Michalea D., additional, Krinner, Gerhard, additional, Nowicki, Sophie, additional, Payne, Anthony J., additional, Rignot, Eric, additional, Scambos, Ted, additional, Simon, Karen M., additional, Smith, Benjamin E., additional, Sørensen, Louise S., additional, Velicogna, Isabella, additional, Whitehouse, Pippa L., additional, A, Geruo, additional, Agosta, Cécile, additional, Ahlstrøm, Andreas P., additional, Blazquez, Alejandro, additional, Colgan, William, additional, Engdahl, Marcus E., additional, Fettweis, Xavier, additional, Forsberg, Rene, additional, Gallée, Hubert, additional, Gardner, Alex, additional, Gilbert, Lin, additional, Gourmelen, Noel, additional, Groh, Andreas, additional, Gunter, Brian C., additional, Harig, Christopher, additional, Helm, Veit, additional, Khan, Shfaqat Abbas, additional, Kittel, Christoph, additional, Konrad, Hannes, additional, Langen, Peter L., additional, Lecavalier, Benoit S., additional, Liang, Chia-Chun, additional, Loomis, Bryant D., additional, McMillan, Malcolm, additional, Melini, Daniele, additional, Mernild, Sebastian H., additional, Mottram, Ruth, additional, Mouginot, Jeremie, additional, Nilsson, Johan, additional, Noël, Brice, additional, Pattle, Mark E., additional, Peltier, William R., additional, Pie, Nadege, additional, Roca, Mònica, additional, Sasgen, Ingo, additional, Save, Himanshu V., additional, Seo, Ki-Weon, additional, Scheuchl, Bernd, additional, Schrama, Ernst J. O., additional, Schröder, Ludwig, additional, Simonsen, Sebastian B., additional, Slater, Thomas, additional, Spada, Giorgio, additional, Sutterley, Tyler C., additional, Vishwakarma, Bramha Dutt, additional, van Wessem, Jan Melchior, additional, Wiese, David, additional, van der Wal, Wouter, additional, and Wouters, Bert, additional

Published
2023
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6. Supplementary material to "Antarctic ice sheet paleo-constraint database"

Author

Lecavalier, Benoit S., primary, Tarasov, Lev, additional, Balco, Greg, additional, Spector, Perry, additional, Hillenbrand, Claus-Dieter, additional, Buizert, Christo, additional, Ritz, Catherine, additional, Leduc-Leballeur, Marion, additional, Mulvaney, Robert, additional, Whitehouse, Pippa L., additional, Bentley, Michael J., additional, and Bamber, Jonathan, additional

Published
2022
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7. Antarctic ice sheet paleo-constraint database

Author

Lecavalier, Benoit S., primary, Tarasov, Lev, additional, Balco, Greg, additional, Spector, Perry, additional, Hillenbrand, Claus-Dieter, additional, Buizert, Christo, additional, Ritz, Catherine, additional, Leduc-Leballeur, Marion, additional, Mulvaney, Robert, additional, Whitehouse, Pippa L., additional, Bentley, Michael J., additional, and Bamber, Jonathan, additional

Published
2022
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12. Antarctic ice sheet paleo-constraint database.

Author

Lecavalier, Benoit S., Tarasov, Lev, Balco, Greg, Spector, Perry, Hillenbrand, Claus-Dieter, Buizert, Christo, Ritz, Catherine, Leduc-Leballeur, Marion, Mulvaney, Robert, Whitehouse, Pippa L., Bentley, Michael J., and Bamber, Jonathan

Subjects
*ANTARCTIC ice, *ICE sheets, *ICE, *BEDROCK, *GEOMETRIC surfaces
Abstract

We present a database of observational constraints on past Antarctic ice sheet changes during the last glacial cycle intended to consolidate the observations that represent our understanding of past Antarctic changes, for state-space estimation, and paleo-model calibrations. The database is a major expansion of the initial work of Briggs and Tarasov (2013). It includes new data types and multi-tier data quality assessment. The updated constraint database "AntICE2" consists of observations of past grounded and floating ice sheet extent, past ice thickness, past relative sea level, borehole temperature profiles, and present-day bedrock displacement rates. In addition to paleo-observations, the present-day ice sheet geometry and surface ice velocities are incorporated to constrain the present-day ice sheet configuration. The method by which the data is curated using explicitly defined criteria is detailed. Moreover, the observational uncertainties are specified. The methodology by which the constraint database can be applied to evaluate a given ice sheet reconstruction is discussed. The implementation of the "AntICE2" database for Antarctic ice sheet model calibrations will improve Antarctic ice sheet predictions during past warm and cold periods and yield more robust paleo model spin ups for forecasting future ice sheet changes. [ABSTRACT FROM AUTHOR]

Published
2022
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