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.

Caroline Leland
Personal Information
Caroline
Leland
Graduate Student
Earth and Environmental Sciences
Biology and Paleo Environment
Contact Information
Tree Ring Lab
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8517

Fax: 

(845) 365-8150

Fields of interest: 

paleoclimatology, dendrochronology

My research focuses on understanding hydroclimatic variability in semi-arid Asia, especially Mongolia, using networks of tree-ring data.

Bridgit Boulahanis
Personal Information
Bridgit
Boulahanis
Graduate Student
Earth and Environmental Sciences
Marine Geology and Geophysics
Contact Information
Bridgit_Boulahanis2.jpg
303F Oceanography
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8355

Fax: 

(845) 365-8156
Alexey Kaplan
Personal Information
Alexey
Kaplan
Lamont Associate Research Professor
Lamont-Doherty Earth Observatory
Ocean and Climate Physics
Contact Information
103C Oceanography
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8689

Fax: 

(845) 365-8157

Fields of interest: 

Analyses of climate fields based on historical, instrumental and paleoclimatic data; El Nino and Southern Oscillation; ocean data assimilation; statistical studies of climate variability from observations and models

I work in the Climate Modeling Group which is part of the LDEO Division of Ocean and Climate Physics. My research is on climate variability, predictability, and prediction, and on methods to study such things. It involves historical climate analyses, paleoclimatic reconstructions, data assimilation, and studies of error dynamics in the ocean and coupled climate models.

Education
Ph.D., Mechanical Engineering
Russian State University of Oil and Gas, Moscow, Russia
1990
B.S. (honors), Applied Mathematics
Russian State University of Oil and Gas, Moscow, Russia
1985
Selected Publications:
On the fidelity of shell-derived δ18Oseawater estimates, Arbuszewski, J.A.; deMenocal, P.; Kaplan, A.; Farmer, E.C. Earth and Planetary Science Letters, Volume: 300, Issue: 3-4 p.: 185-196 (2010)
Evaluating climate variability and change from modern and historical SST observations, Rayner, N A; Kaplan, A; Kent, E C; Reynolds, R W; Brohan, P; Casey, K S; Kennedy, J J; Woodru ff, S D; Smith, T M; Donlon, C; Breivik, L A; Eastwood, S; Ishii, M; Brandon, T , Venice, Italy (2009)
The evolution of the equatorial Pacific zonal SST gradient during the twentieth century, Karnauskas, K B; Seager, R; Kaplan, A; Kushnir, Y; Cane, M A J Climate, Volume: 22, Issue: 16 p.: 4316-4321 (2009)
Interdecadal-decadal climate variability from multicoral oxygen isotope records in the South Pacific Convergence Zone region since 1650 A.D., Linsley, B. K.; Zhang, P. P.; Kaplan, A.; Howe, S. S.; Wellington, G. M. Paleoceanography Jun 20, Volume: 23, Issue: 2 p.: - (2008) Doi 10.1029/2007pa001539
An 8-century tropical Atlantic SST record from the Cariaco Basin: Baseline variability, twentieth-century warming, and Atlantic hurricane frequency, Black, D. E.; Abahazi, M. A.; Thunell, R. C.; Kaplan, A.; Tappa, E. J.; Peterson, L. C. Paleoceanography Oct 25, Volume: 22, Issue: 4 p.: - (2007) Doi 10.1029/2007pa001427
Corroborating ecological depth preferences of planktonic foraminifera in the tropical Atlantic with the stable oxygen isotope ratios of core top specimens, Farmer, E. C.; Kaplan, A.; deMenocal, P. B.; Lynch-Stieglitz, J. Paleoceanography Aug 1, Volume: 22, Issue: 3 p.: - (2007) Doi 10.1029/2006pa001361
The degree of anisotropy for mid-ocean currents from satellite observations and an eddy-permitting model simulation, Huang, H. P.; Kaplan, A.; Curchitser, E. N.; Maximenko, N. A. Journal of Geophysical Research-Oceans Sep 12, Volume: 112, Issue: C9 p.: - (2007) Doi 10.1029/2007jc004105
El Nino as a mediator of the solar influence on climate, Emile-Geay, J.; Cane, M.; Seager, R.; Kaplan, A.; Almasi, P. Paleoceanography Aug 8, Volume: 22, Issue: 3 p.: - (2007) Doi 10.1029/2006pa001304
Comments on "Testing the Fidelity of Methods Used in Proxy-Based Reconstructions of Past Climate": The role of the standardization interval, Smerdon, J. E.; Kaplan, A. Journal of Climate Nov 15, Volume: 20, Issue: 22 p.: 5666-5670 (2007) Doi 10.1175/2007jcli1794.1
The effects of sea-ice and land-snow concentrations on planetary albedo from the earth radiation budget experiment, Gorodetskaya, I. V.; Came, M. A.; Tremblay, L. B.; Kaplan, A. Atmosphere-Ocean Jun, Volume: 44, Issue: 2 p.: 195-205 (2006)
A forward modeling approach to paleoclimatic interpretation of tree-ring data, Evans, M. N.; Reichert, B. K.; Kaplan, A.; Anchukaitis, K. J.; Vaganov, E. A.; Hughes, M. K.; Cane, M. A. Journal of Geophysical Research-Biogeosciences Aug 10, Volume: 111, Issue: G3 p.: - (2006) Doi 10.1029/2006jg000166
Forward modeling of regional scale tree-ring patterns in the southeastern United States and the recent influence of summer drought, Anchukaitis, K. J.; Evans, M. N.; Kaplan, A.; Vaganov, E. A.; Hughes, M. K.; Grissino-Mayer, H. D.; Cane, M. A. Geophysical Research Letters Feb 21, Volume: 33, Issue: 4 p.: - (2006) Doi 10.1029/2005gl025050
Predictability loss in an intermediate ENSO model due to initial error and atmospheric noise, Karspeck, A. R.; Kaplan, A.; Cane, M. A. Journal of Climate Aug, Volume: 19, Issue: 15 p.: 3572-3588 (2006)
Toward estimating climatic trends in SST. Part III: Systematic biases, Kent, E. C.; Kaplan, A. Journal of Atmospheric and Oceanic Technology Mar, Volume: 23, Issue: 3 p.: 487-500 (2006)
Tracking the extent of the South Pacific Convergence Zone since the early 1600s, Linsley, B. K.; Kaplan, A.; Gouriou, Y.; Salinger, J.; deMenocal, P. B.; Wellington, G. M.; Howe, S. S. Geochemistry Geophysics Geosystems May 3, Volume: 7 p.: - (2006) Doi 10.1029/2005gc001115
Multi-scale modeling of the North Pacific Ocean: Assessment and analysis of simulated basin-scale variability (1996-2003), Curchitser, E. N.; Haidvogel, D. B.; Hermann, A. J.; Dobbins, E. L.; Powell, T. M.; Kaplan, A. Journal of Geophysical Research-Oceans Nov 30, Volume: 110, Issue: C11 p.: - (2005) Doi 10.1029/2005jc002902
Radiocarbon calibration curve spanning 0 to 50,000 years BP based on paired Th-230/U-234/U-238 and C-14 dates on pristine corals, Fairbanks, R. G.; Mortlock, R. A.; Chiu, T. C.; Cao, L.; Kaplan, A.; Guilderson, T. P.; Fairbanks, T. W.; Bloom, A. L.; Grootes, P. M.; Nadeau, M. J. Quaternary Science Reviews Sep, Volume: 24, Issue: 16-17 p.: 1781-1796 (2005) DOI 10.1016/j.quascirev.2005.04.007
The relationship between tibetan snow depth, ENSO, river discharge and the monsoons of Bangladesh, Shaman, J.; Cane, M.; Kaplan, A. International Journal of Remote Sensing Sep 10, Volume: 26, Issue: 17 p.: 3735-3748 (2005) Doi 10.1080/01431160500185599
A 2000-year record of Caribbean and tropical North Atlantic hydrographic variability, Black, D. E.; Thunell, R. C.; Kaplan, A.; Peterson, L. C.; Tappa, E. J. Paleoceanography Jun 23, Volume: 19, Issue: 2 p.: - (2004) Doi 10.1029/2003pa000982
Predictability of El Nino over the past 148 years, Chen, D.; Cane, M. A.; Kaplan, A.; Zebiak, S. E.; Huang, D. J. Nature Apr 15, Volume: 428 p.: 733-736 (2004) Doi 10.1038/Nature02439
Small-scale variability and model error in tropical Pacific sea level, Kaplan, A.; Cane, M. A.; Chen, D.; Witter, D. L.; Cheney, R. E. Journal of Geophysical Research-Oceans Feb 4, Volume: 109, Issue: C2 p.: - (2004) Doi 10.1029/2002jc001743
Global analyses of sea surface temperature, sea ice, and night marine air temperature since the late nineteenth century, Rayner, N. A.; Parker, D. E.; Horton, E. B.; Folland, C. K.; Alexander, L. V.; Rowell, D. P.; Kent, E. C.; Kaplan, A. Journal of Geophysical Research-Atmospheres Jul 17, Volume: 108, Issue: D14 p.: - (2003) Doi 10.1029/2002jd002670
Reduced space approach to the optimal analysis interpolation of historical marine observations: Accomplishments, difficulties, and prospects, Kaplan, A.; Cane, M. A.; Kushnir, Y. Advances in the Applications of Marine Climatology p.: 199-216 (2003)
Impact of the North Atlantic Oscillation on Middle Eastern climate and streamflow, Cullen, H. M.; Kaplan, A.; Arkin, P. A.; deMenocal, P. B. Climatic Change Nov, Volume: 55, Issue: 3 p.: 315-338 (2002)
Pacific sea surface temperature field reconstruction from coral delta O-18 data using reduced space objective analysis, Evans, M. N.; Kaplan, A.; Cane, M. A. Paleoceanography Feb, Volume: 17, Issue: 1 p.: - (2002) Doi 10.1029/2000pa000590
Support for tropically-driven Pacific decadal variability based on paleoproxy evidence, Evans, M. N.; Cane, M. A.; Schrag, D. P.; Kaplan, A.; Linsley, B. K.; Villalba, R.; Wellington, G. M. Geophysical Research Letters Oct 1, Volume: 28, Issue: 19 p.: 3689-3692 (2001)
Use of data assimilation via linear low-order models for the initialization of El Nino Southern Oscillation predictions, Canizares, R.; Kaplan, A.; Cane, M. A.; Chen, D.; Zebiak, S. E. Journal of Geophysical Research-Oceans Dec 15, Volume: 106, Issue: C12 p.: 30947-30959 (2001)
Bias correction of an ocean-atmosphere coupled model, Chen, D.; Cane, C. M.; Zebiak, S. E.; Canizares, R.; Kaplan, A. Geophysical Research Letters Aug 15, Volume: 27, Issue: 16 p.: 2585-2588 (2000)
Intercomparison of coral oxygen isotope data and historical sea surface temperature (SST): Potential for coral-based SST field reconstructions, Evans, M. N.; Kaplan, A.; Cane, M. A. Paleoceanography Oct, Volume: 15, Issue: 5 p.: 551-563 (2000)
Reduced space optimal interpolation of historical marine sea level pressure: 1854-1992, Kaplan, A.; Kushnir, Y.; Cane, M. A. Journal of Climate Aug 15, Volume: 13, Issue: 16 p.: 2987-3002 (2000)
Eight centuries of North Atlantic Ocean atmosphere variability, Black, D. E.; Peterson, L. C.; Overpeck, J. T.; Kaplan, A.; Evans, M. N.; Kashgarian, M. Science Nov 26, Volume: 286, Issue: 5445 p.: 1709-1713 (1999)
Analyses of global sea surface temperature 1856-1991, Kaplan, A.; Cane, M. A.; Kushnir, Y.; Clement, A. C.; Blumenthal, M. B.; Rajagopalan, B. Journal of Geophysical Research-Oceans Aug 15, Volume: 103, Issue: C9 p.: 18567-18589 (1998)
The impact of sea level data assimilation on the Lament model prediction of the 1997/98 El Nino, Chen, D. K.; Cane, M. A.; Zebiak, S. E.; Kaplan, A. Geophysical Research Letters Aug 1, Volume: 25, Issue: 15 p.: 2837-2840 (1998)
Optimal sites for coral-based reconstruction of global sea surface temperature, Evans, M. N.; Kaplan, A.; Cane, M. A. Paleoceanography Oct, Volume: 13, Issue: 5 p.: 502-516 (1998)
Reduced space optimal analysis for historical data sets: 136 years of Atlantic sea surface temperatures, Kaplan, A.; Kushnir, Y.; Cane, M. A.; Blumenthal, M. B. Journal of Geophysical Research-Oceans Dec 15, Volume: 102, Issue: C13 p.: 27835-27860 (1997)
Twentieth-century sea surface temperature trends, Cane, M. A.; Clement, A. C.; Kaplan, A.; Kushnir, Y.; Pozdnyakov, D.; Seager, R.; Zebiak, S. E.; Murtugudde, R. Science Feb 14, Volume: 275, Issue: 5302 p.: 957-960 (1997)
Mapping tropical Pacific sea level: Data assimilation via a reduced state space Kalman filter, Cane, M. A.; Kaplan, A.; Miller, R. N.; Tang, B. Y.; Hackert, E. C.; Busalacchi, A. J. Journal of Geophysical Research-Oceans Oct 15, Volume: 101, Issue: C10 p.: 22599-22617 (1996)
Sea level from temperature profiles in the tropical Pacific Ocean, 1975-1982, Reverdin, G.; Kaplan, A.; Cane, M. A. Journal of Geophysical Research-Oceans Aug 15, Volume: 101, Issue: C8 p.: 18105-18119 (1996)
Rosanne D'Arrigo
Personal Information
Rosanne
D'Arrigo
Lamont Research Professor
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
Associate Director - Biology and Paleo Environment
Lamont-Doherty Earth Observatory
Contact Information
Tree Ring Lab
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8617

Fax: 

(845) 365-8150
Education
PhD
Columbia University
06/01/1989
Neil Pederson
Personal Information
Neil
Pederson
Adjunct Assistant Professor
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
Contact Information

Fields of interest: 

Terrestrial Ecosystems, Dendrochronology, Dendroclimatology, Forest Ecosystems, Disturbance Ecology
Education
Ph.D.
Columbia University
08/2005
MS
Auburn University
08/1994
BS
State University of New York College of Environmental Science and Forestry
12/1990
AS
State University of New York Morrisville Ag & Tech
05/1988
Selected Publications:
Temperature and precipitation in Mongolia based on dendroclimatic investigations, Jacoby, G.; Pederson, N.; D'Arrigo, R. Chinese Science Bulletin Jul, Volume: 48, Issue: 14 p.: 1474-1479 (2003) Doi 10.1360/02wd0390
1738 years of Mongolian temperature variability inferred from a tree-ring width chronology of Siberian pine, D'Arrigo, R.; Jacoby, G.; Frank, D.; Pederson, N.; Cook, E.; Buckley, B.; Nachin, B.; Mijiddorj, R.; Dugarjav, C. Geophysical Research Letters Feb 1, Volume: 28, Issue: 3 p.: 543-546 (2001)
Hydrometeorological reconstructions for northeastern Mongolia derived from tree rings: 1651-1995, Pederson, N.; Jacoby, G. C.; D'Arrigo, R. D.; Cook, E. R.; Buckley, B. M.; Dugarjav, C.; Mijiddorj, R. Journal of Climate, Volume: 14, Issue: 5 p.: 872-881 (2001)
Monogolian tree-rings, temperature sensitivity and reconstructions of Northern Hemisphere temperature, D'Arrigo, R.; Jacoby, G.; Pederson, N.; Frank, D.; Buckley, B.; Nachin, B.; Mijiddorj, R.; Dugarjav, C. Holocene Nov, Volume: 10, Issue: 6 p.: 669-672 (2000)
Temperature and precipitation in Mongolia based on dendroclimatic investigations, Jacoby, G.; D'Arrigo, R.; Pederson, N.; Buckley, B.; Dugarjav, C.; Mijiddorj, R. Iawa Journal, Volume: 20, Issue: 3 p.: 339-350 (1999)