Pratigya Polissar

Lamont Assistant Research Professor

Lamont-Doherty Earth Observatory

Biology and Paleo Environment

210 Geoscience

61 Route 9W - PO Box 1000

Palisades

10964

Phone:

(845) 365-8400

Fax:

(845) 365-8150

polissar@ldeo.columbia.edu

View Website

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

Committee member of Jonathan LaRiviere (University of California, Santa Cruz)

Committee member of Cassaundra Meyers (DEES, Columbia)

Research Blogs:

Future El Niño

Referenced in the Following News Items:

Featured in the Following Videos:

Selected Publications:

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)

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

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, Amherst, (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, Amherst, (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, Amherst, (1995)