Paleoclimate

Paleoclimate scientists attempt to understand fundamental aspects of the Earth's Climate System by using natural recorders of past climate change together with climate models to identify regional, hemispheric or inter-hemispheric climate patterns, and to provide the baseline for ongoing and future climate change. These disciplines use marine and terrestrial climate archives (including ocean and lake sediments, fossil corals, speleothems, ice cores, terrestrial sediments, tree rings etc) to create a record of climate changes and variabilities ranging from sub-annual timescales to millions of years. Research interests within the department include reconstructing changes in ocean chemistry and circulation, changes in the carbon cycle, in temperature and precipitation patterns, sea-level and global ice volume, atmospheric circulation and aerosol changes, mountain glacier fluctuations and changes in land-ocean interactions. We use biological, chemical, mineralogic, and isotopic measurements together with climate models to develop a global scale perspective on our climate system. The Paleoclimate faculty includes Columbia University geologists, biologists, geochemists, atmospheric scientists as well as scientists at the NASA Goddard Institute for Space Studies and the American Museum of Natural History.

Pratigya Polissar
Personal Information
Pratigya
Polissar
Lamont Associate Research Professor
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
Contact Information
210 Geoscience
61 Route 9W - PO Box 1000
Palisades
NY
10964
US
(845) 365-8400

Fax: 

(845) 365-8150
Education
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)
Committee member of Yonaton Golsdsmith (DEES, Columbia)
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, 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
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
Edward R. Cook
Personal Information
Edward
R.
Cook
Ewing Lamont Research Professor
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
Director of Tree-Ring Lab
Contact Information
Tree Ring Lab
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8618

Fax: 

(845) 365-8150
Michael Kaplan
Personal Information
Michael
Kaplan
Lamont Associate Research Professor
Lamont-Doherty Earth Observatory
Geochemistry
Contact Information
429 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8646

Fax: 

(845) 365-8155

Fields of interest: 

Glacial geology, paleoclimatology, glacier and ice sheet dynamics, geomorphology, geochronology, limnogeology, cosmogenic surface exposure dating

* Glacier and climate history of southern South America, New Zealand, Antarctica, and eastern North America. Whether past climate changes are in phase around the globe at low and high frequency timescales * Quantifying rates of landscape change in southern South America using cosmogenic nuclide measurements and understanding these changes in relation to development of the Andes

Education
B.A. summa cum laude
SUNY Buffalo
1992
M.S.
University of Maine-Orono
1994
Ph.D.
University of Colorado-Boulder
1999
Selected Publications:
Trans-pacific glacial response to the Antarctic Cold Reversal in the southern mid-latitudes, Sagredo, Esteban A.; Kaplan, Michael R.; Araya, Paola, S.; Lowell, Thomas V.; Aravena, Juan C.; Moreno, Patricio I.; Kelly, Meredith A.; Schaefer, Joerg M. Quaternary Science Reviews (2018)
Onset and Evolution of Southern Annular Mode-Like Changes at Centennial Timescale, Moreno, P. I.; Vilanova, I.; Villa-Martínez, R.; Dunbar, R. B.; Mucciarone, D. A.; Kaplan, M. R.; Garreaud, R.D.; Rojas, M.; Moy, C. M.; De Pol-Holz, R.; Lambert, F. Nature/Scientific Reports (2018)
Polar desert chronologies through quantitative measurements of salt accumulation, Graly, Joseph A.; Licht, Kathy J.; Druschel, Gregory K.; Kaplan, Michael R. Geology, AGU (2018)
The interconnected global climate system – a review of tropical-polar teleconnections, Yuan, Xiaojun; Kaplan, Michael R.; Cane, Mark Journal of Climate (2018)
Late Pleistocene glacial fluctuations in Cordillera Oriental, subtropical Andes, Martini, Mateo A.; Kaplan, Michael R.; Strelin, Jorge A.; Astini, Ricardo A.; Schaefer, Joerg M.; Caffee, Marc W.; Schwartz, Roseanne Quaternary Science Reviews (2017)
Recent climate warming and the Varas rock glacier activity, Cordillera Oriental, Central Andes of Argentina, Martinia, Mateo A.; Strelin, Jorge A.; Flores, Eliseo; Astinia, Ricardo A.; Kaplan, Michael R. GeoResJ (2017)
Regional mid-Pleistocene glaciation in central Patagonia, Hein, Andrew S.; Cogez, Antoine; Darvill, Christopher M.; Mendelova, Monika;. Kaplan, Michael R.; Herman, Frédéric; Dunai, Tibor J.; Norton, Kevin; Xu, Sheng, Marcus Christl, Marcus; Angel Rodés, Angel Quaternary Science Reviews (2017)
Glacial/interglacial changes of Southern Hemisphere wind circulation from the geochemistry of South American dust, Gili, Stefania; Gaiero, Diego M.; Goldstein, Steven L.; Chemale, Farid; Jweda, Jason; Kaplan, Michael R.; Becchio, Raúl A.; Koester, Edinei Earth and Planetary Science Letters (2017)
High particulate iron(II) content in glacially sourced dusts enhances productivity of a model diatom, Shoenfelt, Elizabeth M.; Sun, Jing; Winckler, Gisela; Kaplan, Michael R.; Borunda, Alejandra L; Farrell, Kayla R.; Moreno, Patricio I.; Gaiero, Diego M.; Recasens, Cristina; Sambrotto, Raymond N.; Bostick, Benjamin C. Science Advances (2017)
Geomorfología Y Cronología Glaciar Del Cuaternario En El Noroeste Argentino, Martini, Mateo A.; Strelin, Jorge A.; Astini, Ricardo A.; Kaplan, Michael R. Muruaga, C.M. and Grosse, P. (Eds.), Ciencias de la Tierra y Recursos Naturales del NOA. Relatorio del XX Congreso Geológico Argentino, San Miguel de Tucumán: 825-846. (2017)
East Antarctic ice sheet stability recorded in a high-elevation ice-cored moraine, Bader, Nicole A.; Licht, Kathy; Kaplan, Michael R.; Kassab, Christine; Winckler, Gisela Quaternary Science Reviews (2017)
Middle to Late Pleistocene stability of the central East Antarctic Ice Sheet at the head of Law Glacier, Kaplan, M R; Licht, K; Winckler, G; Schaefer, J M; Bader, N;, Mathieson, C; Roberts, M; Kassab, C M; Schwartz, R; Graly, J Geology, Volume: 45 p.: 963-966. (2017)
Patagonian and southern South Atlantic view of Holocene climate, Kaplan, M.R., Schaefer, J.M., Strelin, J.A., Denton, G.H., Anderson, R.F., Vandergoes, M.J., Finkel, R.C., Schwartz, R., Travis, S.G., Garcia, J.L., Martini, M.A., Nielsen, S.H.H. Quaternary Science Reviews 2016 (2016)
Changing influence of Antarctic and Greenlandic temperature records on sea-level over the last glacial cycle, Siddall, M.; Kaplan, M.R.; Schaefer, J.M.; Putnam, A.; Kelly, M.A.; Goehring, B. Quaternary Science Reviews, Volume: 29, Issue: 3-4 p.: 410-423 (2010) 10.1016/j.quascirev.2009.11.007
A beryllium-10 production-rate for the Southern Hemisphere middle latitudes, Putnam, A E; Schaefer, J M; Vandergoes, M; Barrell, D; Kaplan, M; Goehring, B; Schwartz, R; Finkel, R; Kelley, S; Denton, G H Journal of Quaternary Geochronology (2010)
The chronology of the Last Glacial Maximum and Late-glacial events in central Argentine Patagonia, Hein, AS; Hulton, NRJ; Dunai, T; Sugden, D; Kaplan, MR; Xu, S Journal of Quaternary Geochronology (2010)
Glacier retreat in New Zealand during the Younger Dryas stadial, Kaplan, M. R.; Schaefer, J.M., Denton, G.H.; Barrell, D.J.A.; Chinn, T.J.H.; Putnam, A.E.; Andersen, B.G.; Finkel, R.C.; Schwartz, R.; Doughty, A. Nature (2010)
Surface exposure dating in the Holocene - Precise Be-10 technique for very young surfaces, Finkel, R.; Schaefer, J. M.; Barrell, D.; Brown, T. A.; Denton, G.; Kaplan, M.; Putnam, A.; Rood, D.; Schluchter, C.; Schwartz, R. Geochimica Et Cosmochimica Acta Jun, Volume: 73, Issue: 13 p.: A377-A377 (2009)
Cosmogenic dating of 'old' glacial events in Patagonia,, Hein, A. S.; Hulton, N. R. J.; Dunai, T. J.; Schnabel, C.; Kaplan, M. R.; Xu, S. Geochimica Et Cosmochimica Acta Jun, Volume: 73, Issue: 13 p.: A513-A513 (2009)
Can glacial erosion limit the extent of glaciation?, Kaplan, M. R.; Hein, A. S.; Hubbard, A.; Lax, S. M. Geomorphology Jan 15, Volume: 103, Issue: 2 p.: 172-179 (2009) DOI 10.1016/j.geomorph.2008.04.020
Renewed glacial activity during the Antarctic cold reversal and persistence of cold conditions until 11.5 ka in southwestern Patagonia, Moreno, P. I.; Kaplan, M. R.; Francois, J. P.; Villa-Martinez, R.; Moy, C. M.; Stern, C. R.; Kubik, P. W. Geology Apr, Volume: 37, Issue: 4 p.: 375-378 (2009) Doi 10.1130/G25399a.1
High-Frequency Holocene Glacier Fluctuations in New Zealand Differ from the Northern Signature, Schaefer, J. M.; Denton, G. H.; Kaplan, M.; Putnam, A.; Finkel, R. C.; Barrell, D. J. A.; Andersen, B. G.; Schwartz, R.; Mackintosh, A.; Chinn, T.; Schluchter, C. Science May 1, Volume: 324, Issue: 5927 p.: 622-625 (2009) DOI 10.1126/science.1169312
Southern mid-latitude terminations of MIS-4, the Last Glacial Maximum and the Late Glacial period in the New Zealand moraine record, Schaefer, J. M.; Kaplan, M.; Putnam, A.; Finkel, R.; Barrell, D.; Denton, G.; Schluchter, C. Geochimica Et Cosmochimica Acta Jun, Volume: 73, Issue: 13 p.: A1167-A1167 (2009)
Middle Pleistocene glaciation in Patagonia dated by cosmogenic-nuclide 2 measurements on outwash gravels, Hein, AS; Hulton, NRJ; Dunai, T; Schnabel, C; Kaplan, MR; Naylor, M; , Xu, S Earth and Planetary Science Letters, Volume: 286 p.: 184-197 (2009)
Chronologies of the LGM and its Termination in the Andes based on Surface Exposure Dating, Zech, R; Smith, J; Kaplan, M , Springer Netherlands (2009)
Climate Change in Southern South America during the last two Millennia, Moy, CM; Moreno, PI; Dunbar, RB; Francois, J-P; Kaplan, MR; Villalba, R; Haberzettle, T , Springer Netherlands (2009)
Southern Patagonian glacial chronology for the Last Glacial period and implications for Southern Ocean climate, Kaplan, M. R.; Fogwill, C. J.; Sugden, D. E.; Hulton, N.; Kubik, P. W.; Freeman, S. P. H. T. Quaternary Science Reviews Feb, Volume: 27, Issue: 3-4 p.: 284-294 (2008) DOI 10.1016/j.quascirev.2007.09.013
Glacial dynamics in southernmost South America during Marine Isotope Stage 5e to the Younger Dryas chron: a brief review with a focus on cosmogenic nuclide measurements, Kaplan, M. R.; Moreno, P. I.; Rojas, M. Journal of Quaternary Science Sep-Oct, Volume: 23, Issue: 6-7 p.: 649-658 (2008) Doi 10.1002/Jqs.1209
Climate science - A tale of two ice sheets, Siddall, M.; Kaplan, M. R. Nature Geoscience Sep, Volume: 1, Issue: 9 p.: 570-571 (2008) Doi 10.1038/Ngeo286
Cosmogenic nuclide measurements in southernmost South America and implications for landscape change, Kaplan, M. R.; Coronato, A.; Hulton, N. R. J.; Rabassa, J. O.; Kubik, P. W.; Freeman, S. P. H. T. Geomorphology Jul 1, Volume: 87, Issue: 4 p.: 284-301 (2007) DOI 10.1016/j.geomorph.2006.10.005
Major ice sheet response in eastern New England to a cold North Atlantic region, ca. 16-15 cal ka BP, Kaplan, M. R. Quaternary Research Sep, Volume: 68, Issue: 2 p.: 280-283 (2007) DOI 10.1016/j.yqres.2007.06.003
Cosmogenic nuclide surface exposure dating of boulders on last-glacial and late-glacial moraines, Lago Buenos Aires, Argentina: Interpretive strategies and paleoclimate implications, Douglass, D. C.; Singer, B. S.; Kaplan, M. R.; Mickelson, D. M.; Caffee, M. W. Quaternary Geochronology Feb, Volume: 1, Issue: 1 p.: 43-58 (2006) DOI 10.1016/j.quageo.2006.06.001
Comment on: Cosmogenic nuclide chronology of pre-last glacial maximum moraines at Lago Buenos Aires, 46 degrees S, Argentina (Quaternary Research 63/3, 2005, 301-315) - Reply, Kaplan, M. R.; Singer, B. S.; Douglass, D. C.; Ackert, R. P.; Caffee, M. W. Quaternary Research Sep, Volume: 66, Issue: 2 p.: 367-369 (2006) DOI 10.1016/j.yqres.2006.06.002
Spatial and temporal variability of Holocene temperature in the North Atlantic region, Kaplan, M. R.; Wolfe, A. P. Quaternary Research Mar, Volume: 65, Issue: 2 p.: 223-231 (2006) DOI 10.1016/j.yqres.2005.08.020
Cosmogenic nuclide chronology of pre-last glacial maximum moraines at Lago Buenos Aires, 46 degrees S, Argentina, Kaplan, M. R.; Douglass, D. C.; Singer, B. S.; Caffee, M. W. Quaternary Research May, Volume: 63, Issue: 3 p.: 301-315 (2005) DOI 10.1016/j.yqres.2004.12.003
Cosmogenic nuclide chronology of millennial-scale glacial advances during O-isotope stage 2 in Patagonia, Kaplan, M. R.; Ackert, R. P.; Singer, B. S.; Douglass, D. C.; Kurz, M. D. Geological Society of America Bulletin Mar-Apr, Volume: 116, Issue: 3-4 p.: 308-321 (2004) Doi 10.1130/B25178.1
Joerg M. Schaefer
Personal Information
Joerg
M.
Schaefer
Lamont Research Professor
Lamont-Doherty Earth Observatory
Geochemistry
Adjunct Professor
Earth and Environmental Sciences
Contact Information
409 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8703

Fax: 

(845) 365-8155
Selected Publications:
Greenland was nearly ice-free for extended periods during the Pleistocene, Schaefer, Joerg M.; Finkel, Robert C.; Balco, Greg; Alley, Richard B.; Caffee, Marc C.; Briner, Jason P.; Young, Nicolas E.; Gow, Anthony J.; Schwartz, Roseanne Nature December 8, 2016, Volume: 540 p.: 252-255 (2016) doi:10.1038/nature20146
Do phreatomagmatic eruptions at Ubehebe Crater (Death Valley, California) relate to a wetter than present hydro-climate?, Sasnett, P.; Goehring, B.M.; Christie-Blick, N.; and Schaefer, J.M. Geophysical Research Letters 01/2012, Volume: 39 (2012) 10.1029/2011GL050130
Terrestrial exposure-age record of Holocene ice sheet and ice shelf change in the northeast Antarctic Peninsula, Balco, Greg; Schaefer, Joerg M.; LARISSA group Quaternary Science Reviews (2012)
Estimating the Age of Glacial Features and Magnitude of Subglacial Erosion Using Beryllium-10 Depth Profiles: Results from Scoresby Sund, Greenland, Goehring, B.M.; Kelly, M.A.; Schaefer, J.M.; Lowell, T.V.; Finkel, R.M. Journal of Geophysical Research-Earth Surface (2010)
Changing influence of Antarctic and Greenlandic temperature records on sea-level over the last glacial cycle, Siddall, M.; Kaplan, M.R.; Schaefer, J.M.; Putnam, A.; Kelly, M.A.; Goehring, B. Quaternary Science Reviews, Volume: 29, Issue: 3-4 p.: 410-423 (2010) 10.1016/j.quascirev.2009.11.007
A reevaluation of in situ cosmogenic 3He production rates, Goehring, B.M.; Kurz, M.D.; Balco, G.; Schaefer, J.M.; Licciardi; J; Lifton, N. Quaternary Geochronology (2010)
A beryllium-10 production-rate for the Southern Hemisphere middle latitudes, Putnam, A E; Schaefer, J M; Vandergoes, M; Barrell, D; Kaplan, M; Goehring, B; Schwartz, R; Finkel, R; Kelley, S; Denton, G H Journal of Quaternary Geochronology (2010)
The bipolar switch - changing influence of Antarctic and Greenland temperature records on sea level over the last glacial cycle, Sidall, M; Kaplan, MR; Schaefer, JM; Putnam, A; Kelly, MA; Goehring, B Quaternary Science Reviews, Volume: 29 p.: 410-423 (2010)
A high precision 10Be production rate calibration in New Zealand's Southern Alps, Putnam, A; Schaefer, J M; Barrell, D; Kaplan, M; Denton, G H; Vandergoes, M; Schwartz, R; Finkel, R C; Goehring, B; Kelley, S M Quaternary Geochronology (2010)
A glacier advance in the Peruvian Andes during the late glacial period constrained with cosmogenic He-3, Bromley, G R M; Hall, B; Schaefer, J M; Winckler, G; Todd, C E; Rademacher, K M Journal of Quaternary Science (2010)
Glacier retreat in New Zealand during the Younger Dryas stadial, Kaplan, M. R.; Schaefer, J.M., Denton, G.H.; Barrell, D.J.A.; Chinn, T.J.H.; Putnam, A.E.; Andersen, B.G.; Finkel, R.C.; Schwartz, R.; Doughty, A. Nature (2010)
The last glacial termination, Denton, G. H.; Anderson, R. F.; Toggweiler, J. R.; Edwards, R. L.; Schaefer, J. M.; Putnam, A. E Science, Volume: 328 p.: 1652-1656 (2010)
Glacier Retreat in New Zealand During the Younger Dryas Stadial, Kaplan, M. R.; Schaefer, J.M., Denton, G.H.; Barrell, D.J.A.; Chinn, T.J.H.; Putnam, A.E.; Andersen, B.G.; Finkel, R.C.; Schwartz, R.; Doughty, A. Nature (2010)
Regional beryllium-10 production rate calibration for late-glacial northeastern North America, Balco, G.; Briner, J.; Finkel, R. C.; Rayburn, J. A.; Ridge, J. C.; Schaefer, J. M. Quaternary Geochronology Apr, Volume: 4, Issue: 2 p.: 93-107 (2009) DOI 10.1016/j.quageo.2008.09.001
Precise Be-10 production rate calibration in New Zealand's Southern Alps for the Holocene and Last Glacial Maximum periods,, Putnam, A.; Schaefer, J. M.; Vandergoes, M.; Barrell, D.; Kaplan, M.; Finkel, R.; Goehring, B.; Schwartz, R.; Denton, G. Geochimica Et Cosmochimica Acta Jun, Volume: 73, Issue: 13 p.: A1061-A1061 (2009)
High-Frequency Holocene Glacier Fluctuations in New Zealand Differ from the Northern Signature, Schaefer, J. M.; Denton, G. H.; Kaplan, M.; Putnam, A.; Finkel, R. C.; Barrell, D. J. A.; Andersen, B. G.; Schwartz, R.; Mackintosh, A.; Chinn, T.; Schluchter, C. Science May 1, Volume: 324, Issue: 5927 p.: 622-625 (2009) DOI 10.1126/science.1169312
Holocene Glacier Fluctuations in the Peruvian Andes Indicate Northern Climate Linkages, Licciardi, J M; Schaefer, J M; Taggart, J R; Lund, D C Science, Volume: 325 p.: 1677 (2009)
Relative timing of last glacial maximum and late-glacial events in the central tropical Andes, Bromley, G R M; Schaefer, J M; Winckler, G; Hall, B L; Todd, C E; Rademaker, K M Quaternary Science Reviews, Volume: 28 p.: 2514 (2009)
High-Frequency Holocene Glacier Fluctuations in New Zealand Differ from the Northern Signature, Schaefer, J. M.; Denton, G. H.; Kaplan, M.; Putnam, A.; Finkel, R. C.; Barrell, D. J. A.; Andersen, B. G.; Schwartz, R.; Mackintosh, A.; Chinn, T.; Schluchter, C. Science (2009)
A Be-10 chronology of lateglacial and Holocene mountain glaciation in the Scoresby Sund region, east Greenland: implications for seasonality during lateglacial time, Kelly, M. A.; Lowell, T. V.; Hall, B. L.; Schaefer, J. M.; Finkel, R. C.; Goehring, B. M.; Alley, R. B.; Denton, G. H. Quaternary Science Reviews Dec, Volume: 27, Issue: 25-26 p.: 2273-2282 (2008) DOI 10.1016/j.quascirev.2008.08.004
Cosmogenic beryllium-10 and neon-21 dating of late Pleistocene glaciations in Nyalam, monsoonal Himalayas, Schaefer, J. M.; Oberholzer, P.; Zhao, Z.; Ivy-Ochs, S.; Wieler, R.; Baur, H.; Kubik, P. W.; Schluchter, C. Quaternary Science Reviews Feb, Volume: 27, Issue: 3-4 p.: 295-311 (2008) DOI 10.1016/j.quascirev.2007.10.014
The production rate of cosmogenic Ar-38 from calcium in terrestrial pyroxene, Niedermann, S.; Schaefer, J. M.; Wieler, R.; Naumann, R. Earth and Planetary Science Letters May 30, Volume: 257, Issue: 3-4 p.: 596-608 (2007) DOI 10.1016/j.epsl.2007.03.020
Cosmogenic-nuclide and varve chronologies for the deglaciation of southern New England, Balco, G.; Schaefer, J. M. Quaternary Geochronology Feb, Volume: 1, Issue: 1 p.: 15-28 (2006) DOI 10.1016/j.quageo.2006.06.014
Near-synchronous interhemispheric termination of the last glacial maximum in mid-latitudes, Schaefer, J. M.; Denton, G. H.; Barrell, D. J. A.; Ivy-Ochs, S.; Kubik, P. W.; Andersen, B. G.; Phillips, F. M.; Lowell, T. V.; Schluchter, C. Science Jun 9, Volume: 312, Issue: 5779 p.: 1510-1513 (2006) DOI 10.1126/science.1122872
Terrestrial manganese-53 - A new monitor of Earth surface processes, Schaefer, J. M.; Faestern-Iann, T.; Herzog, G. F.; Knie, K.; Korschinek, G.; Masarik, J.; Meier, A.; PoutivtseV, M.; Rugel, G.; Schluchter, C. Earth and Planetary Science Letters Nov 15, Volume: 251, Issue: 3-4 p.: 334-345 (2006) DOI 10.1016/j.epsl.2006.09.016
Timing of deglaciation on the northern Alpine foreland (Switzerland), Ivy-Ochs, S.; Schaefer, J.; Kubik, P. W.; Synal, H. A.; Schluchter, C. Eclogae Geologicae Helvetiae, Volume: 97, Issue: 1 p.: 47-55 (2004) DOI 10.1007/s00015-004-1110-0
Limited Pliocene/Pleistocene glaciation in Deep Freeze Range, northern Victoria Land, Antarctica, derived from in situ cosmogenic nuclides, Oberholzer, P.; Baroni, C.; Schaefer, J. M.; Orombelli, G.; Ochs, S. I.; Kubik, P. W.; Baur, H.; Wieler, R. Antarctic Science Dec, Volume: 15, Issue: 4 p.: 493-502 (2003) Doi 10.1017/S0954102003001603
Jerry F. McManus
Personal Information
Jerry
F.
McManus
Professor
Lamont-Doherty Earth Observatory
Geochemistry
Contact Information
239 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8722

Fax: 

(845) 365-8155
Jason E. Smerdon
Personal Information
Jason
E.
Smerdon
Lamont Associate Research Professor
Lamont-Doherty Earth Observatory
Ocean and Climate Physics
Adjunct Professor
Ecology, Evolution and Environmental Biology
Contact Information
205D Oceanography
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8493

Fax: 

(845) 365-8157

Fields of interest: 

Common-Era Paleoclimatology, Climate Modeling, Statistical Climatology, Climate Variability and Change

My group’s broad objective is to characterize and understand climate variability and change on multi-decadal to centennial timescales. Climate research is limited in its ability to understand these climatic variations directly from the instrumental record because such observations are not widely available for more than about 100-150 years. To circumvent this limitation, modern instrumental records are supplemented with climatic proxy records and climate model simulations to help characterize these low-frequency modes of change. Toward such ends, my research group uses numerical models, climate proxy records and statistical methods to better understand the variability of climate over decades to centuries. We have a particular interest in how multiple climate proxies can be combined to yield hemispheric and global maps of climate variability spanning the Common Era (the last two thousand years), and how climate models represent climatic change over this time period. Please see my research and publication pages for more information on my group’s research in these areas.

Projects:

  • Spectral characteristics of climate proxies and their expression in climate field reconstructions, NOAA (Lead PI)
  • Collaborative Research: Locally-constrained climate field reconstructions of the last millennium: Methods and application, NSF (Lead PI)
  • Global Decadal Hydroclimate Predictability, Variability and Change: A Data-Enriched Modeling Study (GloDecH), NOAA, (Co PI)
Education
Ph.D., Applied Physics
University of Michigan
2004
M.S., Physics
University of Michigan
2000
B.A., Physics Major
Gustavus Adolphus College
1998
Selected Publications:
Pacific Ocean Forcing and Atmospheric Variability Are the Dominant Causes of Spatially Widespread Droughts in the Contiguous United States, Back, Seung H.; Smerdon, Jason E.; Seager, Richard; Williams, A. Park, Cook, Benjamin I. JGR Atmospheres (2019)
Twentieth century hydroclimate changes consistent with human influence, Marvel, Kate; Cook, Benjamin I.; Bonfils, Céline; Durack, Paul; Smerdon, Jason E.; Williams, Park Nature (2019)
Blue Water Trade-Offs With Vegetation in a CO2 - -Enriched Climate, Mankin, Justin S.; Seager, Richard; Smerdon, Jason; Cook, Benjamin I.; Williams, Park A.; Horton, Radley M. Geophysical Research Letters (2018)
A reconstruction of of global hydroclimate and dynamical variables over the dynamical variables over the Common Era, Steiger, Nathan J., Smerdon, Jason E.; Cook, Edward R.; Cook, Benjamin I. Nature (2018)
A new archive of large volcanic events over the past millennium derived fromreconstructed summer temperatures, Schneider, L.; Smerdon, J. E.; Pretis, F.; Hartl-Meier, C.; Esper, J. Environmental Research Letters (2017)
Projected drought risk in 1.5°C and 2°C warmer climates, Lehner, Flavio; Coats, Sloan; Stocker, Thomas F.; Angeline G.; Pendergrass, Angeline G.; Sanderson, Benjamin M.; Raible, Christoph C.; Smerdon, Jason E. Geophysical Research Letters (2017)

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