Allison Jacobel

Graduate Student
Earth and Environmental Sciences
421 Comer
61 Route 9W - PO Box 1000
(845) 365-8926
(845) 365-8155
Fields of interest: 
Paleoclimatology, paleoceanography, isotope geochemistry

 My research goals focus on furthering our understanding of the climate system through the application of geochemical techniques and reconstruction of paleoclimatic records. Specifically, I am interested in glacial/interglacial tranistions in climate and the mechanisms that amplify insolation forcing. My current project focuses on reconstructing past movements of the Intertropical Convergence Zone (ITCZ) using 232Th, (231Pa/230Th)xs,0 and and 230Th normalized productivity proxies.  The goal of this project is to ground-truth hypotheses about the mechanisms moving CO2 to/from the deep ocean on glacial/interglacial timescales.

List of degrees from highest to lowest:
M.A. Earth and Environmental Studies
Columbia University
B.A. Geology
Macalester College
Honors & Awards: 
Kenneth and Linda Ciriacks Graduate Fellowship Fund in Earth and Environmental Sciences 2015
Columbia Climate Center Grant 2014
NSF Stable Isotope Course Fellowship 2014
NSF Urbino Paleoclimate Summer School Fellowship 2013
NSF GRFP Honorable Mention 2012
Barry M. Goldwater Scholar 2011
Research Blogs: 
Selected Publications: 
Large Deglacial Shifts of the Pacific Intertropical Convergence Zone. Nature Geoscience, Jacobel, A.W.; McManus, J.F.; Anderson, B.A.; Winckler, G. , Nature Geoscience, (Submitted)

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)

Pentultimate Deglacial Dust Fluxes in the Equatorial Pacific: Implications for ITCZ Movement and a Common Mechanism for Glacial Terminations, Jacobel, A.W.; McManus, J.F.; Anderson, B.A.; Winckler, G. , Fall Meeting American Geophysical Union, San Francisco, California, USA, (2014)

Deep Equatorial Atlantic Ocean Circulation over the Last 25,000 Years – Insights from 231Pa/230Th, 14C and Sortable Silt Grain Size, Ng, H.C.; Robinson, L.; McManus, J.F.; Falcon, K.M.; Jacobel, A.W. , Fall Meeting of the American Geophysical Union, (2014)

Heinrich-like events in the Southeast Pacific: abrupt climate change during the last interglacial, Jacobel, A.W.; Mokeddem, Z.; McManus, J.F. , American Geophysical Union, Volume 91, (2010)

The Indonesian Throughflow: Oceanographic Responses to Holocene Changes in the Mean Pacific State, Jacobel, A.W.; Oppo, D.W.; Eglinton, T.I.; Gibbons, F.T.; Montlucon, D.M.; Rosenthal, Y.; Linsley, B.K. , American Geophysical Union, Volume 90, (2009)

Evaluating the effect of coral topography on the climate signal in porites spp., Jacobel, A.W.; Quinn, T.M.; Maupin, C.W. , American Geophysical Union, Volume 89, (2008)