polissar

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Pratigya Polissar
No longer at LDEO: 
Yes
Lamont Associate Research Professor
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
210 Geoscience
61 Route 9W - PO Box 1000
Palisades
NY
10964
US
polissar@ldeo.columbia.edu
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Education
List of degrees from highest to lowest:
Ph.D.
University of Massachusetts, Amherst
05/2005
M.Sc.
University of Massachusetts, Amherst
08/1999
B.A.
Hampshire College
05/1995

Lamont/DEES Student List: 
Sam Phelps
Hannah Rabinowitz
Genevieve Coffey
Committee member of Jonathan LaRiviere (University of California, Santa Cruz)
Committee member of Cassaundra Meyers (DEES, Columbia)
Committee member of Yonaton Golsdsmith (DEES, Columbia)

Research Blogs:

Future El Niño

Referenced in the Following News Items:

How Australia Got Planted
Creating Earthquake Heat Maps: Temperature Spikes Leave Clues in the Rock
Center for Climate and Life Announces 2017 Fellows
New Support for Human Evolution in Grasslands
Key Talks from the American Geophysical Union's Annual Meeting
American Geophysical Union Dec. 3-7: Key Talks From the Earth Institute
Climate Record Suggests Drier Times for Pacific Northwest

Featured in the Following Videos:

Pratigya Polissar Sees Landscapes Changing Through a Microscope
Biomarkers Heat Up During Earthquakes
What Do Dead Plants Tell Us About Earthquakes?

Selected Publications:

Reduced El Niño–Southern Oscillation during the Last Glacial Maximum Ford, H.L.; Ravelo, A.C.; Polissar, P.J. Science 01/2015 Volume: 347 Issue: 6219 p.: 255-258 (2015) 10.1126/science.1258437
Glacial-Interglacial Changes in Central Tropical Pacific Surface Seawater Property Gradients Lynch-Stieglitz, J.; Polissar, P.; Jacobel, A.W.; Hovan, S.; Pockalny, R.; Lyle, M.; Murray, R.; Ravelo, A.C.; Bova, S.; Dunlea, A.; Ford, H.; Hertzberg, J.; Wertman, C.; Maloney, A.; Shackford, J.; Wejnert, K.; Xie, R. Paleoceanography (2015)
A 6,000-yr Lake Record of Drought from the Pacific Northwest Nelson, D. N.; Abbott, M. B.; Steinman, B.; Polissar, P. J.;Stansell, N.S.; Ortiz, J. S.; Rosenmeier, M. F.; Finney, B.; Riedel, J. Proceedings of the National Academy of Sciences (2011) 10.1073/pnas.1009194108
Extractable organic material in fault zones as a tool to investigate frictional stress Polissar, P. J.; Savage, H. M.; Brodsky, E. E. Earth and Planetary Science Letters (2011)
Effects of aridity and vegetation on plant-wax δD in modern lake sediments Polissar, Pratigya J.; Freeman, Katherine H. Geochimica et Cosmochimica Acta Volume: 74 p.: 5785-5797 (2010) 10.1016/j.gca.2010.06.018
Paleoaltimetry of the Tibetan Plateau from D/H ratios of lipid biomarkers Polissar, P. J.;Freeman K. H.;Rowley D. B.;Mcinerney F. A.;Currie B. S. Earth and Planetary Science Letters Volume: 287 p.: 64-76 (2009) 10.1016/j.epsl.2009.07.037
Measurement of 13C and 15N Isotopic Composition on Nanomolar Quantities of C and N Polissar, P. J.; Fulton, J. M.; Junium,C. K.;Turich,C. C.;Freeman, K. H. Analytical Chemistry Volume: 81 Issue: 2 p.: 755-763 (2009) 10.1016/j.yqres.2006.07.005
Last Glacial Maximum equilibrium-line altitude and paleo-temperature reconstructions for the Cordillera de Mérida, Venezuelan Andes Stansell, N.; Polissar, P. J.;Abbott, M. B. Quaternary Research Volume: 67 p.: 115-127 (2007) 10.1016/j.yqres.2006.07.005
Solar modulation of Little Ice Age climate in the tropical Andes Polissar, P. J.; Abbott, M. B.;Wolfe, A. P.;Bezada, M.;Rull, V.;Bradley, R. S. Proceedings of the National Academy of Sciences Volume: 103 Issue: 24 p.: 8937-8942 (2006) 10.1073 pnas.0603118103
Hydrologic balance of tropical South America from oxygen isotopes of lake sediment opal Polissar, P. J.; Abbott, M. B.; Shemesh, A.; Wolfe, A. P.;Bradley, R. S. Earth and Planetary Science Letters Volume: 242 p.: 375-389 (2006) 10.1016/j.epsl.2005.12.024
Late Quaternary deglacial history of the Mérida Andes, Venezuela Stansell, N. D.;Abbott, M. B.;Polissar, P. J.;Wolfe, A. P.;Bezada, M.;Rull, V. Journal of Quaternary Science Volume: 20 Issue: 7-8 p.: 801-812 (2005) doi:10.1002/jqs.973
15,000-yr pollen record of vegetation change in the high altitude tropical Andes at Laguna Verde Alta, Venezuela Rull, V.;Abbott, M. B.;Polissar, P. J.; Wolfe, A. P.;Bezada, M.;Bradley, R. S. Quaternary Research Volume: 64 p.: 308-317 (2005) 10.1016/j.yqres.2005.08.014
Lake records of Holocene climate change, Cordillera de Mérida, Venezuela Polissar, Pratigya J. Geosciences (2005)
Holocene paleohydrology and glacial history of the central Andes using multiproxy lake sediment studies Abbott, M. B.; Wolfe, B. B.; Wolfe, A. P.; Seltzer, G. O.; Aravena, R.; Mark, B. G.; Polissar, P. J.;Rodbell, D. T.;Rowe, H. D.;Vuille, M. Palaeogeography, Palaeoclimatology, Palaeoecology Volume: 194 p.: 123-138 (2003) 10.1016/S0031-0182(03)00274-8
Lipid biomarker, elemental and isotopic evidence of lacustrine organic matter preservation and source: Lago Taypi Chaka Kkota, Bolivia Polissar, Pratigya J. Geoscience (1999)
Carbon isotopes in aquatic plants, Long Valley caldera, California as records of past hydrothermal and magmatic activity Reid Jr., J. B.;Reynolds, J. L.; Connolly, N. T.; Getz, S. L.; Polissar, P. J.; Winship, L. J.; Hainsworth, L. J. Geophysical Research Letters Volume: 25 Issue: 15 p.: 2853-2856 (1998) 10.1029/98GL01854
Using the sunspot cycle to date ice cores Steig, E. J.;Morse, D. L.; Waddington, E. D.; Polissar, P. J. Geophysical Research Letters Volume: 25 Issue: 2 p.: 163-166 (1998) 10.1029/97GL03566
Large amplitude solar modulation cycles of 10Be in Antarctica: implications for atmospheric mixing processes and interpretation of the ice core record Steig, E. J.; Polissar, P. J.; Stuiver, M.; Grootes, P. M.; Finkel, R. C. Geophysical Research Letters Volume: 23 Issue: 5 p.: 523 (1996) 10.1029/96GL00255
Sliding rocks at the Racetrack, Death Valley: What makes them move? Reid Jr., J. B.; Bucklin, E. P.; Copenagle, L.; Kidder, J.; Pack, S. M.; Polissar, P. J.;Williams, M. L. Geology Volume: 23 Issue: 9 p.: 819-822 (1995) 10.1130/0091-7613(1995)​023<0819:SRATRD>​2.3.CO;2
10Be and 36Cl in the Taylor Dome ice core: Clues to Antarctic glacial and climate dynamics Polissar, Pratigya J. Natural Sciences (1995)