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
Aleksey 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
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)