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.

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 (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
Gisela Winckler
Personal Information
Gisela
Winckler
Lamont Research Professor
Lamont-Doherty Earth Observatory
Geochemistry
Lecturer
Lamont-Doherty Earth Observatory
Contact Information
209 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8756

Fax: 

(845) 365-8155

Fields of interest: 

Marine geochemistry, Paleoclimatology, Paleoceanography, Tracer oceanography, dust, paleoclimate

My research interests involve the application of trace elements and isotopes, such as noble gases, radiogenic, cosmogenic, and extraterrestrial nuclides as well as oxygen, carbon and hydrogen isotopes, to problems at the interface between climate, biogeochemistry, and environmental studies., Most of my studies focus on marine systems, both modern and paleo. More recently, I have started working with ice cores as an archive of past climate conditions.

Education
Ph.D.
Institute of Environmental Physics, University of Heidelberg
1998
Diploma
Institute of Environmental Physics, University of Heidelberg
1993
Selected Publications:
Mantle helium reveals Southern Ocean hydrothermal venting, Winckler, G.; Newton, R.; Schlosser, P.;Crone, T Geophysical Research Letters (2010) 10.1029/2009GL042093
Covariant glacial-interglacial dust fluxes in the equatorial Pacific and Antarctica, Winckler, G.; Anderson, R. F.; Fleisher, M. Q.; McGee, D.; Mahowald, N. Science Apr 4, Volume: 320, Issue: 5872 p.: 93-96 (2008) DOI 10.1126/science.1150595
30,000 years of cosmic dust in Antarctic ice, Winckler, G.; Fischer, H. Science Jul 28, Volume: 313, Issue: 5786 p.: 491-491 (2006) DOI 10.1126/science.1127469
Equatorial Pacific productivity and dust flux during the mid-Pleistocene climate transition, Winckler, G.; Anderson, R. F.; Schlosser, P. Paleoceanography Dec 17, Volume: 20, Issue: 4 p.: - (2005) Doi 10.1029/2005pa001177
Does interplanetary dust control 100 kyr glacial cycles?, Winckler, G.; Anderson, R. F.; Stute, M.; Schlosser, P. Quaternary Science Reviews Oct, Volume: 23, Issue: 18-19 p.: 1873-1878 (2004) DOI 10.1016/j.quascirev.2004.05.007
Noble gases and radiocarbon in natural gas hydrates, Winckler, G.; Aeschbach-Hertig, W.; Holocher, J.; Kipfer, R.; Levin, I.; Poss, C.; Rehder, G.; Suess, E.; Schlosser, P. Geophysical Research Letters May 15, Volume: 29, Issue: 10 p.: - (2002) Doi 10.1029/2001gl014013
Salty brines on the Mediterranean sea floor, Wallmann, K.; Suess, E.; Westbrook, G. H.; Winckler, G.; Cita, M. B. Nature May 1, Volume: 387, Issue: 6628 p.: 31-32 (1997)
Joerg M. Schaefer
Personal Information
Joerg
M.
Schaefer
Lamont Research Professor
Lamont-Doherty Earth Observatory
Geochemistry
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
Dorothy M. Peteet
Personal Information
Dorothy
M.
Peteet
Adjunct Senior Research Scientist
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
Adjunct Professor
Earth and Environmental Sciences
Contact Information
15 Geochemistry
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8420

Fax: 

(845) 365-8154

Fields of interest: 

Paleoclimate, paleoecology, climate modeling, wetland carbon storage, palynology.

In the face of a rapidly changing climate today, we can turn to the landscapes around us as well as their historical archives to give us the best possible hints of the magnitude and rapidity of past climate shifts, and their relevance for our future. Our group utilizes field trips to wetlands (salt marshes, fresh marshes, bogs, fens, and swamps) to combine the study of modern plant ecology with retrieval of long sediment cores.

Our research includes travel to Siberia, Alaska, southeastern US, and Easter Island as well as the Hudson River marshes, Black Rock Forest, NY and upland nearby lakes. From these cores we analyze pollen, spores, and plant and animal macrofossils. We are particularly interested in abrupt climate change and patterns of droughts and floods as well as warm intervals and recent coolings such as the Little Ice Age.

Patterns and rates of plant migration are documented using our macrofossil studies in combination with pollen stratigraphy. We target disturbances such as land use change and fire at the local and regional level. Carbon sequestration in wetlands is a more recent focus, with changes in sequestration linked to climate change. Global climate modeling (GCM) at GISS is utilized to understand mechanisms and causes of climatic change.

Education
Ph.D.
New York University
1983
Master of Science
New York University
1979
Bachelor of Arts
Duke University
1974
Selected Publications:
Responses of an arctic landscape to Lateglacial and early Holocene climatic changes: the importance of moisture, Mann, D. H.; Peteet, D. M.; Reanier, R. E.; Kunz, M. L. Quaternary Science Reviews Apr, Volume: 21, Issue: 8-9 p.: 997-1021 (2002) Pii S0277-3791(01)00116-0
Sensitivity and rapidity of vegetational response to abrupt climate change, Peteet, D. Proceedings of the National Academy of Sciences of the United States of America Feb 15, Volume: 97, Issue: 4 p.: 1359-1361 (2000)
Late-glacial to early Holocene climate changes from a central Appalachian pollen and macrofossil record, Kneller, M.; Peteet, D. Quaternary Research Mar, Volume: 51, Issue: 2 p.: 133-147 (1999)
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
School of International & Public Affairs
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:
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)
The 2016 Southeastern U.S. Drought: An Extreme Departure From Centennial Wetting and Cooling Q2, Williams, Park A.; Cook, Benjamin I.; Smerdon, Jason E.; Bishop, Daniel A.; Seager, Richard; Mankin, Justin S. Journal of Geophysical Research: Atmospheres (2017)
Revisiting the Leading Drivers of Pacific Coastal Drought Variability in the Contiguous United States, Cook, Benjamin I.; Willliam, Park A.; Mankin, Justin S.; Seager, Richard; Smerdon, Jason E.; Singh, Deepti Journal of Climate (2017)
A Robust Null Hypothesis for the Potential Causes of Megadrought in Western North America, Ault, Toby R.; St. George, Scott; Smerdon, Jason E.; Coats, Sloan; Mankin, Justin S.; Carrillo, Carlos M.; Cook, Benjamin I.; Stevenson Samantha Journal of Climate (2017)
The 2016 southeastern US drought: an extreme departure from centennial wetting and cooling, Williams, A. Park; Cook, Benjamin I.; Smerdon, Jason E.; Bishop, Daniel A.; Seager, Richard; Mankin, Justin S. Journal of Geophysical Research - Atmospheres, Volume: 122, Issue: 20 p.: 10888-10905 (2017) 10.1002/2017JD027523

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