Allegra N. LeGrande Physical Research Scientist NASA Goddard Institute for Space Studies and Center for Climate Systems Research, Columbia University | 2880 Broadway New York, NY 10025 legrande@giss.nasa.gov | al2035@columbia.edu www.ldeo.columbia.edu/~legrande 212‐678‐5556 || 917‐363‐2253 Education 2007 2005 2003 2001 1999‐2000 Publications 2010 2009 2009 2009 2009 2008 Ph.D. NASA Goddard Institute for Space Studies and Center for Climate Systems Research, Columbia University. Thesis: The climate imprint on the oxygen isotopic composition of water: proxies, observations, and coupled isotopic model simulations Advisor: Gavin A. Schmidt; Committee: Wallace S. Broecker and Mark Cane M.Phil. Columbia University in Earth and Environmental Sciences Thesis: Oxygen isotopic composition of Globorotalia truncatulinoides as a proxy for intermediate depth density M.A. in Earth and Environmental Sciences, Lamont‐Doherty Earth Observatory, Columbia University Thesis: Reconstruction of the Gulf Stream through the Florida Straits during the Last Glacial Maximum Advisor: Jean Lynch‐Stieglitz; Committee: Gavin A. Schmidt and Mark Cane B.S. Rice University (Houston, Texas) Geophysics, Geology, & Anthropology Advisors: Manik Talwani and Dale Sawyer Study Abroad Program, University of Leeds Lewis, S.C., LeGrande, A.N., Kelley, M., and Schmidt, G.A. “Water vapour source change
impacts on oxygen isotope variability in tropical precipitation during Heinrich events” Climate of the Past Discussions, 6, 87‐133.
Carlson, A.E., Obbink, E.A., Anslow, F.S., LeGrande, A.N., Licciardi, J.M., Ullman, D.J. Surface‐melt driven Laurentide ice‐sheet retreat during the early Holocene. Geophys. Res. Lett., doi:10.1029/2009GL040948. Roberts, C.D., LeGrande, A.N., and Tripati, A.K. “An atmosphere‐ocean GCM modeling study of the climate response to changing Arctic seaways in the early Cenozoic.” Earth and Planetary Science Letters, 286, pp. 576‐585. LeGrande, A.N. and Schmidt, G.A. “Sources of Holocene Variability of Oxygen Isotopes in Paleoclimate Archives” Climate of the Past, 5(3), pp. 441-455. Mann, M. E., Schmidt, G.A., S. K. Miller, and LeGrande, A.N. “Potential Biases in Inferring Holocene Temperature Trends from Long‐Term Borehole Information” Geophysical Research Letters, 36, L05708, doi:10.1029/2008GL036354. Carlson, A. E., LeGrande, A.N., Oppo, D.W., Came, R. E., Schmidt, G.A., Anslow, F. S., Licciardi, J. M., Obbink, E. A. “Rapid Early Holocene deglaciation and sea level rise” Nature Geoscience 1, 620-624, doi:10.1038/ngeo285. 2008 2008 2008 2008 2007 2007 2007 2006 2006 2005 2005 2005 2004 2002 LeGrande, A.N. and Schmidt, G.A. “Ensemble coupled water isotope modeling insights into the 8.2 kyr event” Paleoceanography 23, PA3207, doi:10.1029/2008PA001610. Muller, J., Kylander, M., Wüst, R.A.J., Weiss, D., Martinez‐Cortizas, A., LeGrande, A.N., Turney, C., Kershaw, P., Jennerjahn, T., Behling, H., and Jacobson, G. “Wet phases in tropical Australia during Heinrich events detected in the terrestrial peat record of Lynch’s Crater” Quaternary Science Reviews, 27, 468-475,
doi:10.1016/j.quascirev.2007.11.006. LeGrande, A.N. “The 8200 year event.” Encyclopedia of Paleoclimatology and Ancient Environments, Encyclopedia of Earth Sciences Series, ed. V. Gornitz, Springer, New York. Carlson, A.E., Oppo, D.W., Came, R.E., LeGrande, A.N., Keigwin, L.D., and Curry, W.B. “Subtropical Atlantic salinity variability and Atlantic meridional circulation during deglaciation." Geology, 36, 991-994, doi:10.1130/G25080A.1v Oppo, D.W., Schmidt, G.A., and LeGrande, A.N. “Seawater isotope constraints on tropical hydrology during the Holocene” Geophysical Research Letters 34, L13701, doi:10.1029/2007GL030017. Schmidt, G.A., LeGrande, A.N., and G. Hoffmann. “Water Isotopes in a Coupled Ocean‐
Atmosphere Model: Pre‐Industrial and Mid‐Holocene Simulations.” Journal of Geophysical Research, 112, D10103, doi:10.1029/2006JD007781. LeGrande, A.N. and J. Lynch‐Stieglitz. “Surface Currents in the Western North Atlantic during the Last Glacial Maximum.” Geochemistry, Geophysics, Geosystems,8, Q01N09, doi:10.1029/2006GC001371. LeGrande, A.N., G.A. Schmidt, D.T. Shindell, C.V. Field, R.L. Miller, D.M. Koch, G. Faluvegi, and G. Hoffmann. “Consistent simulations of multi‐proxy responses to an abrupt climate change event.” Proceedings of the National Academy of Sciences, 103(4) doi: 10.1073/pnas.0510095103. LeGrande, A.N. and G.A. Schmidt. “Global gridded dataset of the oxygen isotopic composition in seawater.” Geophysical Research Letters 33, L12604, doi:10.1029/2006GL026011. V. Masson‐Delmotte, M. Kageyama, P. Braconnot, S. Charbit, G. Krinner, C. Ritz, E. Guilyardi, J. Jouzel, Ayako Abe‐Ouchi, M. Crucifix, R. M. Gladstone, C. D. Hewitt, A. Kitoh, A.N. LeGrande, O. Marti, U. Merkel, T. Motoi, R. Ohgaito, B. Otto‐Bliesner, W. R. Peltier, I. Ross, P. J. Valdes, G. Vettoretti, S. L. Weber, F. Wolk. “Past and future polar amplification of climate change: climate model intercomparisons and ice‐core constraints.” Climate Dynamics, 26, 513‐529 doi:10.1007/s00382‐005‐0081‐9. Gladstone, R. M., I. Ross, P.J. Valdes, A. Abe‐Ouchi, P. Braconnot, S. Brewer, M. Kageyama, A. Kitoh, A.N. LeGrande, O. Marti, R. Ohgaito, B. Otto‐Bliesner, W.R. Peltier, G. Vettoretti. “Mid‐Holocene NAO: A PMIP2 model intercomparison.” Geophysical Research Letters 32, L16707, doi:10.1029/2005GL023596. Schmidt, G.A., and A.N. LeGrande “The Goldilocks abrupt climate change event.” Quaternary Science Reviews. Vol. 24, 1109‐1110, doi:10.1016/j.quascirev.2005.01.015. LeGrande, A.N., J. Lynch‐Stieglitz, and E.C. Farmer. “Oxygen isotopic composition of Globorotalia truncatulinoides as a proxy for intermediate depth density” Paleoceanography. vol. 19, PA4025, doi:10.1029/2004PA001045. LeGrande, A.N. “Shipboard physical properties measurements.” RASTA R/V SONNE Cruise Report SO164 Rapid Climate changes in the Western Tropical Atlantic – Assessment of the biogenous and sedimentary record, ed. D. Nuernberg, J. Schoenfeld, W‐C Dullo, and C. Ruehlemann; pp 39‐40. 1997 In Prep In Prep In Prep In Prep In Prep In Prep Press 2008 2008 2008 2006 2006 2006 Awards 2010 2009 2008 2006 2002‐2005 “Site 41WA217 Survey Sam Houston National Forest, TX 2001”; ed., LeGrande, A.N., Myers, T.S., & McIntosh, R.J. Walter Kingsborough, SHNF Archaeologist Lee, J. Worden, J., Noone, D., Adkins, J., Bowman, K., Eldering, A., LeGrande, A.N., Li, J.L., Schmidt, G.A., Sodemann, H. “Relating tropical ocean clouds to moist processes using water vapor isotope measurements” JGR‐Atmospheres LeGrande, A.N. and Schmidt, G.A. “Water Isotopes as a Quantitative Paleosalinity Proxy.” Paleoceanography Roberts, C.D., LeGrande, A.N., and Tripati, A. “Alternate modes of variability during the Eocene” Lewis, S.C. and LeGrande, A.N. “Deuterium Excess: Feasibility as a tracer of vapour source temperature.” Schmidt, G.A. and LeGrande, A.N. “Long term controls on water isotope variability in monsoon regions” Nature LeGrande, A.N. and Schmidt, G.A. “Impacts of high green house gas concentration on water isotope distribution” GRL LeGrande, A.N. “Getting a Grip on Future Ice Sheet Changes.” NASA/GISS Science Brief: http://www.giss.nasa.gov/research/briefs/legrande_02/ Oh, C. “Analysis of Past Glacial Melting Shows Potential for Increased Greenland Ice Melt and Sea Level Rise” September 2, 2008 http://www.columbia.edu/cu/news/research/glacial.html Haag, A. L. “Greenland’s ancient analogue” Nature Reports Climate Change http://www.nature.com/climate/2008/0809/full/climate.2008.88.html LeGrande, A.N. and G.A. Schmidt. “Modeling an abrupt climate change.” NASA/GISS Science Brief: http://www.giss.nasa.gov/research/briefs/legrande_01/ Kostel, K. “Scientists Confirm Historic Massive Flood in Climate Change.” NASA February 28, 2006 http://www.nasa.gov/vision/earth/lookingatearth/abrupt_change.html Kostel, K. “Researchers Confirm Role of Massive Flood in Climate Change.” CEI. January 10, 2006 http://www.earthinstitute.columbia.edu/news/2006/story01‐10‐06.html PI: NOAA C2D2 “Sensitivity of Climate Variability to Anthropogenic and Natural Drivers during the Last Millennium” NSF‐ADVANCE Workshop Award: “Polar Amplification of Greenhouse Climates.” Co‐PI: NSF‐ATM 07‐53660 “Collaborative Research: A New Method for Understanding Mechanisms of Ice Sheet Demise” Best Popular Science Piece: NASA Goddard Institute for Space Studies National Defense Science and Engineering Graduate Research Fellowship (Office of Naval Research, Ocean Engineering) Conferences & Invited Talks 2010 Invited: Brown University 2009 Invited: Goddard Space Flight Center Director’s Seminar, Goddard Space Flight Center Colloquium, TES Meeting, Univ. Colorado at Boulder, Rice University, European Geophysical Union, Vienna; PAGES Open Science Meeting, Corvallis, OR; MOCA, IAMAS Montreal, QC 2008 2008 2007 2007 2006 2006 2005 2004 Invited: Fall American Geophysical Union Meeting; SWING (Water Isotope Intercomparison Group), IAEA, Vienna; Univ. Southern California; Rutgers University; Goldschmidt Conference, Vancouver, BC AGU Chapman Conference, Hawaii : Water vapor and paleoclimate; Paleoclimate Model Intercomparison Project, Phase 2, Boulder, CO; Pliocene Model Intercomparison Project, New York, NY Invited: Nagoya, Japan, Water Isotopes in the Climate System; Fall AGU Meeting Ocean Controls on Abrupt Climate Change, ESF, Obergürgl, Austria, International Conference on Paleoceanography IX (ICP9), Shanghai, China Invited: Hutton Club, University of Edinburgh, UK; Fall American Geophysical Union Meeting; PAGES/CLIVAR 8.2 ka workshop; UK RAPID Climate Change Meeting (Birmingham, UK) guest panelist; Lamont‐Doherty Earth Observatory; NOAA Geophysical Fluid Dynamics Laboratory, Princeton University; Bryn Mawr College Communicating Climate Change: Science and Media Networking for the Future. Sponsored by the British Council USA; Graduate Climate Conference, University of Washington Invited: Fall American Geophysical Union Meeting; University of Victoria, BC Seminar; Paleoclimate Modelling Intercomparison Project Phase II. (Giens, France); GEOTOP seminar (University of Quebec at Montreal and McGill University) Fall American Geophysical Union Meeting; International Conference on Paleoceanography (ICP8) (Biarritz, France); Spring AGU Meeting Fall American Geophysical Union Meeting 2002 Research Experience 2009‐Present Physical Research Scientist, NASA Goddard Institute for Space Studies; Adjunct Associate Research Scientist, Center for Climate Systems Research, Columbia University 2009 Associate Research Scientist NASA GISS & CCSR, Columbia University 2007‐2009 Post‐doctoral Research Assistant NASA GISS & CCSR, Columbia University 2003‐2007 Graduate Research Assistant NASA GISS & CCSR, Columbia University 2006 River Summer, Leg 1 Participant. 2005 Teaching Assistant (Introduction to Atmospheric Sciences), Columbia University 2003 Teaching Assistant (Earth systems: Climate), Columbia University 2001‐2003 Graduate Research Assistant Lamont‐Doherty Earth Observatory, Columbia University 2002 Shipboard assistant scientist, R/V Sonne SO164 (D. Nuernberg, J. Schoenfeld, W.‐C. Dullo, and C. Ruehlemann) 2002 Shipboard assistant scientist, R/V Knorr KNR166‐2 (J. Lynch‐Stieglitz and W. Curry) 2001 Rice University Geophysics Semester Research (Manik Talwani) 1999 Rice University Summer Geology and Geophysics Internship Program (Dale Sawyer) 1998 LDEO Summer Internship Program (Jean Lynch‐Stieglitz and Dallas Abbot) Mentoring 2008‐2010 Co‐Supervised Chris D. Roberts of Cambridge University for his Ph.D. thesis with Aradhna Tripati 2008‐2011 Co‐Supervised Sophie C. Lewis of Australian National University for her Ph.D. thesis with Jeanette Lindsay and Michael Gagan 2009‐2011 Mentored David J. Ullman of the University of Wisconsin, Madison for his Ph.D. thesis with Anders C. Carlson