- Mr. David McGeeGraduate StudentEarth and Environmental SciencesGeochemistry
419 Comer61 Route 9W - PO Box 1000PalisadesNY10964-8000USPhone:(845) 365-8514dmcgee@ldeo.columbia.eduFields of interest:Dryland paleohydrology, eolian dust deposition and transport in past climates, constant flux proxies in ocean sedimentsMy research applies the tools of isotope geochemistry to questions of paleoclimate, paleoceanography and hydrology. My current projects include:
-Reconstructing dust deposition rates and provenance in the Pacific Ocean over late Pleistocene glacial-interglacial cycles
-Improving our understanding of constant-flux proxies used in paleoceanographic studies (230Th, 3He), in particular how they respond to sediment redistribution by ocean currents
-Estimating hydrothermal and surface water fluxes into Mono Lake using 36Cl and 3He in order to understand its carbon budget
-Dating past shorelines of closed-basin lakes and cave deposits in arid regions to reconstruct dryland paleohydrology
Honors & Awards:National Science Foundation Graduate Research Fellowship 2005Lawrence McKinley Gould Award in the Natural Sciences 1997Phi Beta Kappa 1996Educational Activities:GK-12 Fellow at the High School for Arts, Imagination, and InquiryTA for "The Earth's Carbon Cycle" and "Earth Systems: Climate"Selected Publications:Covariant glacial-interglacial dust fluxes in the equatorial Pacific and Antarctica, , Science, Apr 4, Volume 320, Issue 5872, p.93-96, (2008), DOI 10.1126/science.1150595
Deglacial changes in dust flux in the eastern equatorial Pacific, , Earth and Planetary Science Letters, May 15, Volume 257, Issue 1-2, p.215-230, (2007), DOI 10.1016/j.epsl.2007.02.033

