Oceanography

Oceanography in the Department includes ocean circulation and dynamics, air-sea interaction, chemical tracers and cycles, interactions with marine life, and the sedimentary record of past oceans and climates at timescales ranging from years to millions of years. An overarching goal is the study of the ocean's role in the global climate and marine ecosystems. Research programs involve observational, model, and theory components, and is highly interdisciplinary. The faculty have active programs across the globe, from tropical to polar environments, and coastal zones. Research includes study of the dynamics of sea ice, tropical ocean variability, El Niño and other climate oscillations, and ocean/glacial ice interaction. Chemical oceanography faculty examine the marine biogeochemical cycles of major and minor elements, including carbon and anthropogenic compounds in all their forms. They use both observational (measuring geochemical tracers at sea) and modeling approaches to understand ocean circulation, with a specific focus on the ocean's role in the carbon cycle, both today and in the past, and especially its contribution to absorbing anthropogenic carbon dioxide. Biological oceanography faculty study the intereactions of marine organisms with one another and with their physical and chemical environment to understand the their role of ocean biota in the global carbon cycle. Paleoceanography faculty reconstruct changes in surface and deep ocean circulation, changes in ocean productivity and chemistry, and changes in terrestrial environments. An important component of this research involves developing spatial and temporal records of climate change based on biological, chemical, mineralogical, and isotopic measurements on deep sea sediment samples and corals. Strong connections are maintained with the International Research Institute for Climate Prediction (IRI) and the Goddard Institute for Space Studies.

Steven L. Goldstein
Personal Information
Steven
L.
Goldstein
Associate Director - Geochemistry
Lamont-Doherty Earth Observatory
Geochemistry
Higgins Professor
Earth and Environmental Sciences
Contact Information
213 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8787

Fax: 

(845) 365-8155

Fields of interest: 

Geochemistry, isotope geology, how the earth works

The Earth is an incredibly dynamic planet. Throughout its four and a half billion year history, magmas generated in the mantle have been creating crust, which in turn has been mixed back into the mantle by subduction. Formation of the continents and the core have resulted major chemical differentiation of the planet. The combination of chemical fractionations and the decay of radioactive elements in rocks impart "fingerprints" that we use to understand how these processes work, and to determine the timing of events.

These fingerprints are among the most versatile geological tracers. Their applicability extends across the spectrum of the Earth sciences and is limited only by our creativity and imagination. Among the most exciting aspects of isotope geochemistry is that we are neither "hard-" nor "soft" rockers, neither "Quaternary-" nor "Archean" geologists.

At Lamont, we are using chemical and isotopic tracers in studies ranging from deep Earth processes and evolution to Quaternary climate change. Our igneous studies include the history of continental growth as well magma formation processes at ocean ridges, ocean islands, and island arcs. Low-temperature studies include tracing element fluxes in the present-day oceans and through time, and quantifying the timing of climate change through dating of sediments only thousands of years old. The next decade promises to be the most exciting yet as new analytical techniques will extend our arsenal of isotopic tracers.

I found Lamont to be an amazingly exciting place to be a Ph.D. student, and this is why I returned as a faculty member when the opportunity arose. Its combination of great intellectual breadth and range of resources and friendliness make a great environment for research and education.

 

Education
Ph.D.
Columbia University
1986
MA
Harvard University
1978
BA
Columbia University
1976
Randye Rutberg, faculty, Hunter College, CUNY
Alexandra LaGatta, faculty, St. Mary's College of California
Alexander Piotrowski, faculty, U of Cambridge
William Thompson, scientist, Wood Hole Oceanographic Institution
Kevin Jones, Exxon-Mobil
Kyla Simons, Exxon Mobil
Jason Jweda, ConocoPhillips
Yue Cai, Associate Research Scientist, LDEO
Selected Publications:
High precision Sr-Nd-Hf-Pb isotopic compositions of USGS Standard Reference Material BCR-2, Jweda, J., Bolge, L., Class, C., Goldstein, S.L. Geostandards and Geoanalytical Research (2015)
Biogeochemical cycling of Nd along the eastern margin of the North Atlantic, Stichel, T.; Hartman, A.E.; Duggan, B.; Goldstein, S.L.; Scher, H.D.; Pahnke, K. Earth and Planetary Science Letters, Volume: 412 p.: 245-260 (2015)
Dead Sea drawdown and monsoonal influences in the Levant during the last interglacial, Torfstein, A.; Goldstein, S.L.; Stein, M.; Kushnir, Y.; Enzel, Y.; Haug, G. Earth and Planetary Science Letters, Volume: 412 p.: 235-244 (2015)
A comparison of detrital U-Pb zircon, 40Ar/39Ar hornblende, and 40Ar/39Ar biotite ages in marine sediments off East Antarctica: implications for the geology of subglacial terrains and provenance studies, Pierce, E.L.; Hemming, S.R.; Williams, T.W.; van de Flierdt, T.; Brachfeld, S.A.; Gehrels, G.; Goldstein, S.L.; Reiners, P.W.; Thompson, S.N. Earth Science Reviews (2014)
Hafnium isotope evidence for slab melt contributions in the Central Mexican Volcanic Belt and implications for slab melting in hot and cold slab arcs, Cai, Y.; LaGatta, A.; Goldstein, S.L.; Langmuir, C.H.; Gómez-Tuena, A.; Martín-del Pozzo, A.-L.; Carrasco-Núñez, G. Chemical Geology, Volume: 377 p.: 45-55 (2014)
Biological response to millennial variability of dust supply in the Subantarctic South Atlantic Ocean, Anderson, R.F.; Barker, S.; Fleisher, M.; Gersonde R.; Goldstein, S.L.; Kuhn G.; Mortyn, P.G.; Pahnke, K.; Julian P. Sachs, J.P. Philosophical Transactions of the Royal Society, Lond. Ser. A., Volume: 372 (2014)
Meter-scale Nd isotopic heterogeneity in pyroxenite-bearing Ligurian peridotites encompasses global-scale upper mantle variability, Borghini, G.; Rampone, E.; Zanetti, A.; Class, C.; Cipriani, A.; Hofmann, A.W.; Goldstein, S.L. Geology, Volume: 41 p.: 1055-1058 (2013) 10.1130/g34438.1
Dust transport and synoptic conditions over the Sahara-Arabia deserts during the MIS6/5 and 2/1 transitions from physical, chemical and isotopic properties of Red Sea cores, Palchan, D.; Stein, M.; Almogi-Labin, A.; Erel, Y.; Goldstein, S.L. Earth and Planetary Science Letters , Volume: 382 p.: 125-129 (2013)
Rapid Changes in Meridional Advection of Southern Ocean Intermediate Waters to the Tropical Pacific During the last 30 kyr, Pena, L.D.; Goldstein, S.L.; Hemming, S.R.; Jones, K.M.; Calvo, E.; Pelejero, C.; Cacho, I. Earth and Planetary Science Letters, Volume: 368 p.: 20-32 (2013)
An integrated multi-site U-Th chronology of last glacial Lake Lisan, Torfstein, A.; Goldstein, S.L.; Kagan, E.; Stein, M. Geochimica et Cosmochimica Acta, Volume: 104 p.: 210-231 (2013)
Li/Mg systematics in scleractinian corals: Calibration of the thermometer, Montagna, P.; McCulloch, M.; Douville, E.; Correa, M.L.; Trotter, J.; Rodolfo-Metalpa, R.; Dissard, D.; Ferrier-Pages, C.; Frank, N.; Freiwald, A.; Goldstein, S.; Mazzoli, C.; Reynaud, S.; Ruggeberg, A.; Russo, S.; Taviani, M. Geochimica Et Cosmochimica Acta, Volume: 132 p.: 288-310 (2013)
Dust transport and synoptic conditions over the Sahara-Arabia deserts during the MIS6/5 and 2/1 transitions from physical, chemical and isotopic properties of Red Sea cores, Palchan, D.; Stein, M.; Almogi-Labin, A.; Erel, Y.; Goldstein, S.L. Earth and Planetary Science Letters , Volume: 382 p.: 125-129 (2013)
Inter-laboratory study for coral Sr/Ca and other element/Ca ratio measurements, Hathorne, E.C.; Gagnon, A.; Felis, T.; Adkins, J;, Ryuji, A.; Boer, W.; Caillon, N.; Case, D.; Cobb, K.; Douville, E.; deMenocal, P.; Eisenhauer, A.; Garbe-Schönberg, C.-D.; Geibert, W.; Goldstein, S.; Hughen, K.; Inoue, M.; Kawahata, H.; et al. Geochemistry Geophysics Geosystems, Volume: 14 p.: 3730-3750 (2013)
Radiocarbon reservoir ages as freshwater-brine monitors in Lake Lisan - Dead Sea system, Stein, M.; Lazar, B.; Goldstein, S.L. Radiocarbon, Volume: 55 p.: 1050-1057 (2013)
Rapid Changes in Meridional Advection of Southern Ocean Intermediate Waters to the Tropical Pacific During the last 30 kyr, Pena, L.D.; Goldstein, S.L.; Hemming, S.R.; Jones, K.M.; Calvo, E.; Pelejero, C.; Cacho, I. Earth and Planetary Science Letters, Volume: 368 p.: 20-32 (2013)
Impacts of abrupt climate changes in the Levant from last glacial Dead Sea levels, Torfstein, A.; Goldstein, S.L.; Stein, M.; Enzel, Y. Quaternary Science Reviews, Volume: 69 p.: 1-7 (2013)
An integrated multi-site U-Th chronology of last glacial Lake Lisan, Torfstein, A.; Goldstein, S.L.; Kagan, E.; Stein, M. Geochimica et Cosmochimica Acta, Volume: 104 p.: 210-231 (2013)
GEOTRACES intercalibration of neodymium isotopes and rare earth element concentrations in seawater and suspended particles - Part 2: systematic tests and baseline profiles, Pahnke, K.; van De Flierdt, T.; Jones, K.M.; Lambelet, M.; Hemming, S.R.; Goldstein, S.L. Limnology and Oceanography - Methods, Volume: 10 p.: 253-269 (2012)
Sources and transport routes of fine detritus material to the Late Quaternary Dead Sea basin, Haliva-Cohen, A.; Stein, M.; Goldstein, S.L.; Sandler, A.; Starinsky, A. Quaternary Science Reviews, Volume: 49 p.: 1-16 (2012)
GEOTRACES intercalibration of neodymium isotopes and rare earth elements in seawater and marine particulates – Part 1: international intercomparison, van de Flierdt, T.; Pahnke, K.; Amakawa, H.; Andersson, P.; Basak, C.; Colin, C.; Crocket, K.; Frank, M.; Frank, N.; Goldstein, S.L.; Goswami, V.; Haley, B.A.; Hathorne, E.C.; Hemming, S.R.; Henderson, G.M.; Jeandel, C.; Jones, K.; Kreissig, K.; et al. Limnology and Oceanography-Methods, Volume: 10 p.: 234-251 (2012)
Preboreal onset of cold-water coral growth beyond the Arctic Circle revealed by coupled radiocarbon and U-series dating and neodymium isotopes, López Correa, M.; Montagna, P.; Joseph, N.; Rüggeberg, A.; Fietzke, J.; Dorschel, B.; Goldstein, S.L.; Wheeler, A.; Freiwald, A. Quaternary Science Reviews, Volume: 34 p.: 24-43 (2012)
Enriched basalts at segment Centers: the Lucky Strike (37º 17' N) and Menez Gwen (37º 50' N) segments of the Mid-Atlantic Ridge, Gale, A.; Escrig, S.; Gier, E.J.; Langmuir, C.H.; Goldstein, S.L. Geochemistry Geophysics Geosystems, Volume: 12 p.: Q06016 (2012)
Characterizing the sediment provenance of East Antarctica's weak underbelly: The Aurora and Wilkes sub-glacial basins, Pierce, Pierce, E.L.; Williams T.; van de Flierdt, T.; Hemming, S.R.; Goldstein, S.L.; Brachfeld, S.A. Paleoceanography, Volume: 26, Issue: PA4217 p.: 10.1029/2011PA002127 (2011)
Enriched basalts at segment Centers: the Lucky Strike (37º 17' N) and Menez Gwen (37º 50' N) segments of the Mid-Atlantic Ridge, Gale, A.; Escrig, S.; Gier, E.J.; Langmuir, C.H.; Goldstein, S.L. Geochemistry Geophysics Geosystems, Volume: 12 p.: Q06016 (2011)
Crystal growth during dike injection of MOR basaltic melts: evidence from preservation of local Sr equilibria in plagioclase, Zellmer, G.F.; Rubin, K.H.; Dulski, P.; Lizuka, Y.; Goldstein, S. L.; Perfit, M.R. Contributions to Mineralogy and Petrology, Volume: 161 p.: 153-173 (2011)
Magmatic Diversity of western Mexico as a function of metamorphic transformations in the subducted oceanic plates, Gómez-Tuena; A., Mori, L.; Goldstein, S.L.; Pérez-Arvizu, O. Geochimica et Cosmochimica Acta, Volume: 75 p.: 213-241 (2011)
Slab and mantle controls on the Sr-Nd-Pb-Hf isotope evolution of the post-42 Myr Izu Bonin volcanic arc, Straub, S M; Goldstein, S L; Class, C; Schmidt, A; Gomez-Tuena, A Journal of Petrology (2010)
Evidence for iceberg armadas from East Antarctica in the Southern Ocean during the late Miocene and early Pliocene, Williams, T; van de Flierdt, T; Hemming, SR; Chung, E; Roy, M; Goldstein, SL Earth and Planetary Science Letters, Volume: 290 p.: 351-361 (2010)
Lithium isotopes in Guatamalan and Franciscan HP-LT rocks: insights into the role of sediment-derived fluids during subduction, Simons, K.K.; Harlow, G.E.; Brueckner, H.K.; Goldstein, S.L.; Sorensen, S.S.; Hemming, N.G.; Langmuir, C.H. Geochimica et Cosmochimica Acta, Volume: 74 p.: 3621-3641 (2010)
Contrasting compositions of Saharan dust in the eastern Atlantic Ocean during the last deglaciation and African Humid Period, Cole, J. M.; Goldstein, S. L.; deMenocal, P. B.; Hemming, S. R.; Grousset, F. E. Earth and Planetary Science Letters, Volume: 278, Issue: 3-4 p.: 257-266 (2009) doi:10.1016/j.epsl.2008.12.011
Mid-ocean-ridge basalt of Indian type in the northwest Pacific Ocean basin, Straub, S. M.; Goldstein, S. L.; Class, C.; Schmidt, A. Nature Geoscience Apr, Volume: 2, Issue: 4 p.: 286-289 (2009) Doi 10.1038/Ngeo471
Comprehensive refertilization of lithospheric mantle beneath the North China Craton: further Os-Sr-Nd isotopic constraints, Zhang, H.F.; Goldstein, S.L.; Zhou, X.H.; Sun, M.; Cai, Y. Journal of the Geological Society 03/2009, Volume: 166 p.: 11 (2009)
Osmium isotopes in Grande Comore lavas: constraints on EM-type mantle components, Class, C; Goldstein, S L; Shirey, S B Earth and Planetary Letters, Volume: 284 p.: 219-227 (2009)
Use of strontium isotopes in detrital sediments to constrain the glacial position of the Agulhas Retroflection, Franzese, A. M.; Hemming, S. R.; Goldstein, S. L. Paleoceanography, Volume: 24 (2009) 10.1029/2008PA001706
Lithospheric removal as a trigger for flood basalt magmatism in the Trans-Mexican Volcanic Belt, Mori, L.; Gómez-Tuena, A.; Schaaf, P.; Goldstein, S.L.; Pérez-Arvizu, O.; Solís-Pichardo, G. Journal of Petrology, Volume: 50 p.: 2157-2186 (2009)
Mantle source variations beneath the Eastern Lau Spreading Center and the nature of subduction components in the Lau basin-Tonga arc system, Escrig, S.; Bézos, A.; Goldstein, S.L.; Langmuir, C.H.; Michael, P.J. Geochemistry Geophysics Geosystems, Volume: 10 p.: Q04014 (2009)
Evolution of subcontinental lithospheric mantle beneath eastern China: Re-Os isotopic evidence from mantle xenoliths in Paleozoic kimberlites and Mesozoic basalts, Zhang, H. F.; Goldstein, S. L.; Zhou, X. H.; Sun, M.; Zheng, J. P.; Cai, Y. Contributions to Mineralogy and Petrology Mar, Volume: 155, Issue: 3 p.: 271-293 (2008) DOI 10.1007/s00410-007-0241-5
Origin of a 'Southern Hemisphere' geochemical signature in the Arctic upper mantle, Goldstein, S. L.; Soffer, G.; Langmuir, C. H.; Lehnert, K. A.; Graham, D. W.; Michael, P. J. Nature May 1, Volume: 453, Issue: 7191 p.: 89-U5 (2008) Doi 10.1038/Nature06919
Modeling the marine nd isotope variability with an offline ocean general circulation model, Jones, K. M.; Khatiwala, S.; Goldstein, S. L.; Hemming, S. R.; van de Flierdt, T. Geochimica Et Cosmochimica Acta Jul, Volume: 72, Issue: 12 p.: A439-A439 (2008)
Abrupt changes in Antarctic Intermediate Water circulation over the past 25,000 years, Pahnke, K; Goldstein, S.L.; Hemming, S.R. Nature Geoscience, Volume: 1 p.: 870-874 (2008)
Towards explaining the Nd paradox using reversible scavenging in an ocean general circulation model, Siddall, M.; Khatiwala, S.; van de Flierdt, T.; Jones, K.; Goldstein, S.L.; Hemming, S.R.; Anderson, R.F. Earth and Planetary Science Letters, Volume: 274 p.: 448-461 (2008)
A Pan-African Origin of the Gamburtsev Subglacial Mountains, Antarctica, van de Flierdt, T.; Hemming, S.R.; Goldstein, S.L.; Gehrels, G.E.; Cox, S.E. Geophysical Research Letters, Volume: 35 p.: L21303 (2008)
Ar-40/Ar-39 ages of hornblende grains and bulk Sm/Nd isotopes of circum-Antarctic glacio-marine sediments: Implications for sediment provenance in the Southern Ocean, Roy, M.; van de Flierdt, T. V.; Hemming, S. R.; Goldstein, S. L. Chemical Geology Oct 15, Volume: 244, Issue: 3-4 p.: 507-519 (2007) DOI 10.1016/j.chemgeo.2007.07.017
Effects of prolonged flat subduction on the Miocene magmatic record of the central Trans-Mexican Volcanic Belt, Mori, L.; Gomez-Tuena, A.; Cai, Y.; Goldstein, S. L. Chemical Geology Oct 15, Volume: 244, Issue: 3-4 p.: 452-473 (2007) DOI 10.1016/j.chemgeo.2007.07.002
Geochemical evidence for slab melting in the Trans-Mexican Volcanic Belt, Gomez-Tuena, A.; Langmuir, C. H.; Goldstein, S. L.; Straub, S. M.; Ortega-Gutierrez, F. Journal of Petrology Mar, Volume: 48, Issue: 3 p.: 537-562 (2007) DOI 10.1093/petrology/egl071
Global neodymium hafnium isotope systematics - Revisited, Van De Flierdt, T.; Goldstein, S. L.; Hemming, S. R.; Frank, M.; Halliday, A. N. Geochimica Et Cosmochimica Acta Aug, Volume: 71, Issue: 15 p.: A1053-A1053 (2007)
Global neodymium-hafnium isotope systematics - revisited, van de Flierdt, T.; Goldstein, S. L.; Hemming, S. R.; Roy, M.; Frank, M.; Halliday, A. N. Earth and Planetary Science Letters Jul 30, Volume: 259, Issue: 3-4 p.: 432-441 (2007) DOI 10.1016/j.epsl.2007.05.003
Late Quaternary changes in desert dust inputs to the Red Sea and Gulf of Aden from Sr-87/Sr-86 ratios in deep-sea cores, Stein, M.; Almogi-Labin, A.; Goldstein, S. L.; Hemleben, C.; Starinsky, A. Earth and Planetary Science Letters Sep 15, Volume: 261, Issue: 1-2 p.: 104-119 (2007) DOI 10.1016/j.epsl.2007.06.008
Strontium isotope tracing of terrigenous sediment dispersal in the Antarctic Circumpolar Current: Implications for constraining frontal positions, Hemming, S. R.; van de Flierdt, T.; Goldstein, S. L.; Franzese, A. M.; Roy, M.; Gastineau, G.; Landrot, G. Geochemistry Geophysics Geosystems Jun 13, Volume: 8 p.: - (2007) Doi 10.1029/2006gc001441
The co-evolution of Black Sea level and composition through the last deglaciation and its paleoclimatic significance, Major, C. O.; Goldstein, S. L.; Ryan, W. B. F.; Lericolais, G.; Piotrowski, A. M.; Hajdas, I. Quaternary Science Reviews Sep, Volume: 25, Issue: 17-18 p.: 2031-2047 (2006) DOI 10.1016/j.quascirev.2006.01.032
Radiogenic isotope fingerprint of Wilkes Land - Adelie Coast Bottom Water in the circum-Antarctic Ocean, van de Flierdt, T.; Hemming, S. R.; Goldstein, S. L.; Abouchami, W. Geophysical Research Letters Jun 24, Volume: 33, Issue: 12 p.: - (2006) Doi 10.1029/2006gl026020
The radiogenic isotope fingerprint of Wilkes Land-Adelie Coast Bottom Water in the Circum-Antarctic Ocean, van de Flierdt, T.; Hemming, S. R.; Goldstein, S. L.; Abouchami, W. Geochimica Et Cosmochimica Acta Aug-Sep, Volume: 70, Issue: 18 p.: A665-A665 (2006) DOI 10.1016/j.gca.2006.06.1243
A radiometric calibration of the SPECMAP timescale, Thompson, W. G.; Goldstein, S. L. Quaternary Science Reviews Dec, Volume: 25, Issue: 23-24 p.: 3207-3215 (2006) DOI 10.1016/j.quascirev.2006.02.007
Reduced Agulhas Leakage during the Last Glacial Maximum inferred from an integrated provenance and flux study, Franzese, A. M.; Hemming, S. R.; Goldstein, S. L.; Anderson, R. F. Earth and Planetary Science Letters Oct 15, Volume: 250, Issue: 1-2 p.: 72-88 (2006) DOI 10.1016/j.epsl.2006.07.002
Temporal stability of the neodymium isotope signature of the Holocene to glacial North Atlantic, van de Flierdt, T.; Robinson, L. F.; Adkins, J. F.; Hemming, S. R.; Goldstein, S. L. Paleoceanography Nov 25, Volume: 21, Issue: 4 p.: - (2006) Doi 10.1029/2006pa001294
Evolution of helium isotopes in the Earth's mantle, Class, C.; Goldstein, S. L. Nature Aug 25, Volume: 436, Issue: 7054 p.: 1107-1112 (2005) Doi 10.1038/Nature03930
Grand Comore Island: A well-constrained "low He-3/He-4" mantle plume, Class, C.; Goldstein, S. L.; Stute, M.; Kurz, M. D.; Schlosser, P. Earth and Planetary Science Letters May 15, Volume: 233, Issue: 3-4 p.: 391-409 (2005) DOI 10.1016/j.epsl.2005.02.029
Open-system coral ages reveal persistent suborbital sea-level cycles, Thompson, W. G.; Goldstein, S. L. Science Apr 15, Volume: 308, Issue: 5720 p.: 401-404 (2005) DOI 10.1126/science.1104035
Sr isotope evidence for sources of terrigenous sediment in the southeast Atlantic Ocean: Is there increased available Fe for enhanced glacial productivity?, Rutberg, R. L.; Goldstein, S. L.; Hemming, S. R.; Anderson, R. F. Paleoceanography Mar 30, Volume: 20, Issue: 1 p.: - (2005) Doi 10.1029/2003pa000999
Temporal relationships of carbon cycling and ocean circulation at glacial boundaries, Piotrowski, A. M.; Goldstein, S. L.; Hemming, S. R.; Fairbanks, R. G. Science Mar 25, Volume: 307, Issue: 5717 p.: 1933-1938 (2005) DOI 10.1126/science.1104883
Intensification and variability of ocean thermohaline circulation through the last deglaciation, Piotrowski, A. M.; Goldstein, S. L.; Hemming, S. R.; Fairbanks, R. G. Earth and Planetary Science Letters Aug 30, Volume: 225, Issue: 1-2 p.: 205-220 (2004) DOI 10.1016/j.epsl.2004.06.002
Origin of enriched ocean ridge basalts and implications for mantle dynamics, Donnelly, K. E.; Goldstein, S. L.; Langmuir, C. H.; Spiegelman, M. Earth and Planetary Science Letters Oct 15, Volume: 226, Issue: 3-4 p.: 347-366 (2004) DOI 10.1016/j.epsl.2004.07.019
U-Th dating of Lake Lisan (late Pleistocene Dead Sea) aragonite and implications for glacial East Mediterranean climate change, Haase-Schramm, A.; Goldstein, S. L.; Stein, M. Geochimica Et Cosmochimica Acta Mar, Volume: 68, Issue: 5 p.: 985-1005 (2004)
Catastrophic arid episodes in the Eastern Mediterranean linked with the North Atlantic Heinrich events, Bartov, Y.; Goldstein, S. L.; Stein, M.; Enzel, Y. Geology May, Volume: 31, Issue: 5 p.: 439-442 (2003)
Catastrophic flooding of the Black Sea, Ryan, W. B. F.; Major, C. O.; Lericolais, G.; Goldstein, S. L. Annual Review of Earth and Planetary Sciences, Volume: 31 p.: 525-554 (2003) DOI 10.1146/annurev.earth.31.100901.141249
Magmatic and amagmatic seafloor generation at the ultraslow-spreading Gakkel ridge, Arctic Ocean, Michael, P. J.; Langmuir, C. H.; Dick, H. J. B.; Snow, J. E.; Goldstein, S. L.; Graham, D. W.; Lehnert, K.; Kurras, G.; Jokat, W.; Muhe, R.; Edmonds, H. N. Nature Jun 26, Volume: 423, Issue: 6943 p.: 956-U1 (2003) Doi 10.1038/Nature01704
An open-system model for U-series age determinations of fossil corals, Thompson, W. G.; Spiegelman, M. W.; Goldstein, S. L.; Speed, R. C. Earth and Planetary Science Letters May 15, Volume: 210, Issue: 1-2 p.: 365-381 (2003) Doi 10.1016/S0012-821x(03)00121-3
Temporal control of subduction magmatism in the eastern Trans-Mexican Volcanic Belt: Mantle sources, slab contributions, and crustal contamination, Gomez-Tuena, A.; LaGatta, A. B.; Langmuir, C. H.; Goldstein, S. L.; Ortega-Gutierrez, F.; Carrasco-Nunez, G. Geochemistry Geophysics Geosystems Aug 9, Volume: 4 p.: - (2003) Doi 10.1029/2003gc000524
Standards for publication of isotope ratio and chemical data in Chemical Geology, Goldstein, S. L.; Deines, P.; Oelkers, E. H.; Rudnick, R. L.; Walter, L. M. Chemical Geology Dec 15, Volume: 202, Issue: 1-2 p.: 1-4 (2003) DOI 10.1016/j.chemgo.2003.08.003
Long-lived isotopic tracers in oceanography, paleoceanography, and ice-sheet dynamics, Goldstein, SL; Hemming, S. The Oceans and Marine Geochemistry, Volume: 6 p.: 453-489 (2003) 10.1016/BO-08-043751-6/06179-X
The control of lithium budgets in island arcs, Tomascak, P. B.; Widom, E.; Benton, L. D.; Goldstein, S. L.; Ryan, J. G. Earth and Planetary Science Letters Mar 15, Volume: 196, Issue: 3-4 p.: 227-238 (2002) Pii S0012-821x(01)00614-8
Sulfur and strontium isotope composition of the Llobregat River (NE Spain): Tracers of natural and anthropogenic chemicals in stream waters, Soler, A.; Canals, A.; Goldstein, S. L.; Otero, N.; Antich, N.; Spangenberg, J. Water Air and Soil Pollution May, Volume: 136, Issue: 1-4 p.: 207-224 (2002)
Calibration of the C-14 time scale to > 40 ka by U-234-Th-230 dating of Lake Lisan sediments (last glacial Dead Sea), Schramm, A.; Stein, M.; Goldstein, S. L. Earth and Planetary Science Letters Jan 30, Volume: 175, Issue: 1-2 p.: 27-40 (2000)
Composition and processes of the mantle lithosphere in northeastern Brazil and Fernando de Noronha: evidence from mantle xenoliths, Rivalenti, G.; Mazzucchelli, M.; Girardi, V. A. V.; Vannucci, R.; Barbieri, M. A.; Zanetti, A.; Goldstein, S. L. Contributions to Mineralogy and Petrology Apr, Volume: 138, Issue: 4 p.: 308-325 (2000)
Radiocarbon calibration beyond the dendrochronology range, Stein, M.; Goldstein, S. L.; Schramm, A. Radiocarbon, Volume: 42, Issue: 3 p.: 415-422 (2000)
Reconstructing low levels of Lake Lisan by correlating fan-delta and lacustrine deposits, Machlus, M.; Enzel, Y.; Goldstein, S. L.; Marco, S.; Stein, M. Quaternary International, Volume: 73-4 p.: 137-144 (2000)
Reduced North Atlantic Deep Water flux to the glacial Southern Ocean inferred from neodymium isotope ratios, Rutberg, R. L.; Hemming, S. R.; Goldstein, S. L. Nature Jun 22, Volume: 405, Issue: 6789 p.: 935-938 (2000)
Distinguishing melt and fluid subduction components in Umnak volcanics, Aleutian Arc, Class, C.; Miller, D. M.; Goldstein, S. L.; Langmuir, C. H. Geochemistry Geophysics Geosystems, Volume: 1, Issue: 6 (2000) 10.1029/1999GC000010
The process of plume-lithosphere interactions in the ocean basins - the case of Grande Comore, Class, C.; Goldstein, S. L.; Altherr, R.; Bachelery, P. Journal of Petrology May, Volume: 39, Issue: 5 p.: 881-903 (1998)
Plume-lithosphere interactions in the ocean basins: constraints from the source mineralogy, Class, C.; Goldstein, S. L. Earth and Planetary Science Letters Aug, Volume: 150, Issue: 3-4 p.: 245-260 (1997)
Temporal evolution of the Kerguelen plume: Geochemical evidence from approximate to 38 to 82 Ma lavas forming the Ninetyeast ridge - Discussion, Class, C.; Goldstein, S. L.; Galer, S. J. G. Contributions to Mineralogy and Petrology Jun, Volume: 124, Issue: 1 p.: 98-103 (1996)
Cerium Lead and Lead-Isotope Ratios in Arc Magmas and the Enrichment of Lead in the Continents, Miller, D. M.; Goldstein, S. L.; Langmuir, C. H. Nature Apr 7, Volume: 368, Issue: 6471 p.: 514-520 (1994)
The Importance of Parental Magma Composition to Calc-Alkaline and Tholeiitic Evolution - Evidence from Umnak Island in the Aleutians, Miller, D. M.; Langmuir, C. H.; Goldstein, S. L.; Franks, A. L. Journal of Geophysical Research-Solid Earth Jan 10, Volume: 97, Issue: B1 p.: 321-343 (1992)
A Sm-Nd Isotopic Study of Atmospheric Dusts and Particulates from Major River Systems, Goldstein, S. L.; Onions, R. K.; Hamilton, P. J. Earth and Planetary Science Letters, Volume: 70, Issue: 2 p.: 221-236 (1984)
Nd and Sr Isotopic Study of a Mafic Layer from Ronda Ultramafic Complex, Zindler, A.; Staudigel, H.; Hart, S. R.; Endres, R.; Goldstein, S. Nature, Volume: 304, Issue: 5923 p.: 226-230 (1983)
Nd, Sr and Pb Isotopic Systematics in a 3-Component Mantle - a New Perspective, Zindler, A.; Jagoutz, E.; Goldstein, S. Nature, Volume: 298, Issue: 5874 p.: 519-523 (1982)
Nd and Sr Isotopic Relationships in Pelagic Clays and Ferromanganese Deposits, Goldstein, S. L.; Onions, R. K. Nature, Volume: 292, Issue: 5821 p.: 324-327 (1981)
Bärbel Hönisch
Personal Information
Bärbel
Hönisch
Associate Professor
Earth and Environmental Sciences
Geochemistry
Contact Information
229 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8828

Fax: 

(845) 365-8155

Fields of interest: 

Paleoclimatology, Paleoceanography, Biological Oceanography

My main interest is focussed on the understanding and reconstruction of past marine carbonate chemistry. Specifically, I seek to validate and apply the boron isotope proxy for past seawater pH. The methods used for the validation work are culture experiments with living planktic foraminifers, as well as observations on planktic and benthic foraminifers from coretop sediments, and now also bamboo corals. Specifically I studied the influence of symbiont photosynthesis on the pH recorded by planktic foraminifers (Hönisch et al., 2003) and scleractinian corals (Hönisch et al., 2004). The boron isotopic composition of symbiont-bearing planktic foraminifers also changes with foraminiferal shell size, as it appears that larger individuals spend relatively more time closer to the seasurface where light levels are higher and symbiont photosynthesis is stronger (Hönisch and Hemming, 2004). In the latter study we also describe a significant post-depositional dissolution effect on the boron isotopic composition in foraminifera shells. Although these side effects are significant, the detailed knowledge of these proxy limitations now allows us to carefully select sample material for paleoreconstructions. I am currently applying the boron isotope proxy to reconstruct ocean acidification across the Paleocene/Eocene Thermal Maximum.

The B/Ca proxy for marine carbonate chemistry is fairly new and we continue to test it in culture experiments Allen et al., 2011, Allen et al., 2012), where we can control environmental conditions. I am also particularly interested in testing proxy relationships of times when the minor and trace element composition of seawater was different from today.

Some of my projects include:

  • Testing Geochemical proxy relationships under variable paleo-seawater chemical conditions
  • Reconstructing surface ocean acidification at the PETM
  • Validating the boron isotope proxy in deep-sea corals and tracing anthropogenic CO2 invasion
Education
Ph.D.
Alfred Wegener Institute for Polar and Marine Research (AWI) and University of Bremen
2002
Diplom (equal to MS)
University of Bremen
1999
Vordiplom (equal to BA)
University of Bielefeld
1995
Caroline Baptist
Selected Publications:
The influence of salinity on Mg/Ca ratios of cultured and core-top planktic foraminifers, Hönisch, B., K.A. Allen, D.W. Lea, H.J. Spero, S.M. Eggins, J. Arbuszewski, P. deMenocal, Y. Rosenthal, A.D. Russell Geochimica et Cosmochimica Acta, Volume: 121 p.: 196-213 (2013) 10.1016/j.gca.2013.07.028
The Geological Record of Ocean Acidification, Hönisch, B.; A. Ridgwell; D.N. Schmidt; E. Thomas; S.J. Gibbs; A. Sluijs; R.E. Zeebe; L. Kump; R.C. Martindale; S.E. Greene; W. Kiessling; J. Ries; J. Zachos; D.L. Royer; S. Barker; T.M. Marchitto Jr.; R. Moyer; C. Pelejero; P. Ziveri; G.L. Foster; and B. Science, Volume: 335, Issue: 1058 (2012)
Atmospheric Carbon Dioxide Concentration over the Mid Pleistocene Transition, Hönisch, B.; Hemming, N.G.; Archer, D.; Siddall, M.; McManus, J.F. Science, Volume: 324 p.: 1551-1554 (2009)
Maureen Raymo
Personal Information
Maureen
Raymo
Bruce C. Heezen/Lamont Research Professor
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
Adjunct Professor
Earth and Environmental Sciences
Director - Core Repository
Lamont-Doherty Earth Observatory
Contact Information
105E Geoscience
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8801

Fax: 

(845) 365-8150
Selected Publications:
Departures from eustasy in Pliocene sea-level records, Raymo, Maureen E.; Mitrovica, Jerry X.; O'Leary, Michael J.; DeConto, Robert M.; Hearty, Paul L. NATURE GEOSCIENCE MAY, Volume: 4 p.: 328–332 (2011)
Diachronous benthic delta O-18 responses during late Pleistocene terminations, Lisiecki, Lorraine E.; Raymo, Maureen E. PALEOCEANOGRAPHY SEP 23, Volume: 24 p.: PA3210 (2009)
Plio-Pleistocene Ice Volume, Antarctic Climate, and the Global δ18O Record, Raymo, M. E., L. E. Lisiecki, and K. H. Nisancioglu Science, Volume: 313 p.: 492 (2006)
A Pliocene-Pleistocene stack of 57 globally distributed benthic delta O-18 records, Lisiecki, L. E.; Raymo, M. E. PALEOCEANOGRAPHY JAN 18, Volume: 20 p.: PA1003 (2005)
The 41 kyr world: Milankovitch's other unsolved mystery, Raymo, M. E.; Nisancioglu, K. PALEOCEANOGRAPHY MAR 6, Volume: 18 p.: 1011 (2003)
The timing of major climate terminations, Raymo, M. E. PALEOCEANOGRAPHY AUG, Volume: 12 p.: 577–585 (1997)
THE HIMALAYAS, ORGANIC-CARBON BURIAL, AND CLIMATE IN THE MIOCENE, RAYMO, ME PALEOCEANOGRAPHY JUN, Volume: 9 p.: 399–404 (1994)
Tectonic forcing of late Cenozoic climate, Raymo, M.E. and W.F. Ruddiman Nature, Volume: 359 p.: 117-122 (1992)
Evolution of Atlantic Pacific Delta-C-13 Gradients over the Last 2.5 My, Raymo, M. E.; Ruddiman, W. F.; Shackleton, N. J.; Oppo, D. W. Earth and Planetary Science Letters Mar, Volume: 97, Issue: 3-4 p.: 353-368 (1990)
Peter B. deMenocal
Personal Information
Peter
B.
deMenocal
Professor
Earth and Environmental Sciences
Biology and Paleo Environment
Contact Information
207 Geoscience
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8483

Fax: 

(845) 365-8150

Fields of interest: 

Paleoceanography and Paleoclimatology

I study marine sediment to reconstruct past changes in ocean circulation and terrestrial climate. Our group primarily uses stable isotopic and trace metal (Mg/Ca) analyses of foraminifera and terrigenous sediment geochemistry to investigate how and why climates have changed in the past. Recent research projects include: Holocene climate and ocean circulation variability

Some of my projects include:

  • African climate change and Human evolution ( details )
  • Holocene climate variability ( details )
  • Abrupt onset and termination of the African Humid Period ( details )
  • Cultural responses to Holocene climate changes ( details )
  • Mollusc geochemistry and reconstructing seasonal to multiannual records of coastal oceean temperatures ( details)

 

 

Education
Ph.D. (Geology)
Columbia University
1991
M.S. (Oceanography)
University of Rhode Island, Graduate School of Oceanography
1986
B.S. (Geology) cum laude
St. Lawrence University
1982
SONYA DYHRMAN
Personal Information
Sonya
Dyhrman
Associate Professor
Earth and Environmental Sciences
Biology and Paleo Environment
Contact Information
102E Geoscience
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8165

Fax: 

(845) 365-8163

I am broadly interested in how marine microbes like phytoplankton interact with their geochemical environment, where I use molecular level tools to study the intersection of microbial physiology and biogeochemistry.

Microbial oceanography group members are using a suite of genome-enabled approaches to examine the distribution and activities of marine phytoplankton, and how they influence cycling of carbon, nitrogen and phosphorus. Our work often uses model cultures to understand and bound field observations made on research cruises that span the from polar to tropical systems. This research emphasis provides advanced training for undergraduates, graduate students, and postdoctoral scholars and it is also used as a framework for the development and implementation of inquiry-based educational activities for children.

Education
Ph.D.
Scripps Institution of Oceanography, University of California San Diego
11/1999
B.A.
Dartmouth College
06/1994
Braddock Linsley
Personal Information
Dr.
Braddock
Linsley
Lamont Research Professor
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
Contact Information
104E Geoscience
61 Route 9W - PO Box 1000
Palisades
NY
10964
US
(845 365-8306

Fax: 

(845) 365-8150

Fields of interest: 

Coral-based paleoclimatology in the Indo-Pacific, Sediment records of Western Pacific Warm Pool and Indonesian Throughflow variability
Education
Ph.D. Geology
University of New Mexico
1990
M.S. Geology
University of South Carolina
1984
B.S. Geology
St. Lawrence University
1982
Emilie Dassie; former post doctoral scientist at LDEO
Selected Publications:
SPCZ Zonal Events and Downstream Influence on Surface Ocean Conditions in the Indonesian Throughflow Region, Linsley, Braddock K.; Wu, Henry C.; Rixen, Tim; Charles, Chris D.; Gordon, Arnold L: Moore, Michael D. Geophysical Research Letters, Volume: 43 (2016)
Decadal changes in South Pacific sea surface temperatures and the relationship to the Pacific decadal oscillation and upper ocean heat content, Linsley, Braddock K.; Wu, Henry C.; Dassie, Emilie P.; Schrag, Daniel P Geophysical Research Letters 04/2015, Volume: 42 p.: doi:10.1002/2015GL063045. (2015)
Oceanographic variability in the South Pacific Convergence Zone region over the last 210 years from multi-site coral Sr/Ca., Wu, Henry C; Linsley, BK; Dassie,EP, Schiraldi, B; deMenocal,PB Geochemistry, Geophysics, Geosystems (2013)
Holocene Evolution of the Indonesian Throughflow and the Western Pacific Warm Pool, Linsley, B.K.; Y. Rosenthal; D. W. Oppo, Nature Geoscience 2010, Volume: 3 p.: 578-583 (2010)
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
Pratigya Polissar
Personal Information
Pratigya
Polissar
Lamont Associate Research Professor
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
Contact Information
210 Geoscience
61 Route 9W - PO Box 1000
Palisades
NY
10964
US
(845) 365-8400

Fax: 

(845) 365-8150
Education
Ph.D.
University of Massachusetts, Amherst
05/2005
M.Sc.
University of Massachusetts, Amherst
08/1999
B.A.
Hampshire College
05/1995
Committee member of Jonathan LaRiviere (University of California, Santa Cruz)
Committee member of Cassaundra Meyers (DEES, Columbia)
Committee member of Yonaton Golsdsmith (DEES, Columbia)
Selected Publications:
Reduced El Niño–Southern Oscillation during the Last Glacial Maximum, Ford, H.L.; Ravelo, A.C.; Polissar, P.J. Science 01/2015, Volume: 347, Issue: 6219 p.: 255-258 (2015) 10.1126/science.1258437
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)
A 6,000-yr Lake Record of Drought from the Pacific Northwest, Nelson, D. N.; Abbott, M. B.; Steinman, B.; Polissar, P. J.;Stansell, N.S.; Ortiz, J. S.; Rosenmeier, M. F.; Finney, B.; Riedel, J. Proceedings of the National Academy of Sciences (2011) 10.1073/pnas.1009194108
Extractable organic material in fault zones as a tool to investigate frictional stress, Polissar, P. J.; Savage, H. M.; Brodsky, E. E. Earth and Planetary Science Letters (2011)
Effects of aridity and vegetation on plant-wax δD in modern lake sediments, Polissar, Pratigya J.; Freeman, Katherine H. Geochimica et Cosmochimica Acta, Volume: 74 p.: 5785-5797 (2010) 10.1016/j.gca.2010.06.018
Paleoaltimetry of the Tibetan Plateau from D/H ratios of lipid biomarkers, Polissar, P. J.;Freeman K. H.;Rowley D. B.;Mcinerney F. A.;Currie B. S. Earth and Planetary Science Letters, Volume: 287 p.: 64-76 (2009) 10.1016/j.epsl.2009.07.037
Measurement of 13C and 15N Isotopic Composition on Nanomolar Quantities of C and N, Polissar, P. J.; Fulton, J. M.; Junium,C. K.;Turich,C. C.;Freeman, K. H. Analytical Chemistry, Volume: 81, Issue: 2 p.: 755-763 (2009) 10.1016/j.yqres.2006.07.005
Last Glacial Maximum equilibrium-line altitude and paleo-temperature reconstructions for the Cordillera de Mérida, Venezuelan Andes, Stansell, N.; Polissar, P. J.;Abbott, M. B. Quaternary Research, Volume: 67 p.: 115-127 (2007) 10.1016/j.yqres.2006.07.005
Solar modulation of Little Ice Age climate in the tropical Andes, Polissar, P. J.; Abbott, M. B.;Wolfe, A. P.;Bezada, M.;Rull, V.;Bradley, R. S. Proceedings of the National Academy of Sciences, Volume: 103, Issue: 24 p.: 8937-8942 (2006) 10.1073 pnas.0603118103
Hydrologic balance of tropical South America from oxygen isotopes of lake sediment opal, Polissar, P. J.; Abbott, M. B.; Shemesh, A.; Wolfe, A. P.;Bradley, R. S. Earth and Planetary Science Letters, Volume: 242 p.: 375-389 (2006) 10.1016/j.epsl.2005.12.024
Late Quaternary deglacial history of the Mérida Andes, Venezuela, Stansell, N. D.;Abbott, M. B.;Polissar, P. J.;Wolfe, A. P.;Bezada, M.;Rull, V. Journal of Quaternary Science, Volume: 20, Issue: 7-8 p.: 801-812 (2005) doi:10.1002/jqs.973
15,000-yr pollen record of vegetation change in the high altitude tropical Andes at Laguna Verde Alta, Venezuela, Rull, V.;Abbott, M. B.;Polissar, P. J.; Wolfe, A. P.;Bezada, M.;Bradley, R. S. Quaternary Research, Volume: 64 p.: 308-317 (2005) 10.1016/j.yqres.2005.08.014
Lake records of Holocene climate change, Cordillera de Mérida, Venezuela, Polissar, Pratigya J. Geosciences, Amherst (2005)
Holocene paleohydrology and glacial history of the central Andes using multiproxy lake sediment studies, Abbott, M. B.; Wolfe, B. B.; Wolfe, A. P.; Seltzer, G. O.; Aravena, R.; Mark, B. G.; Polissar, P. J.;Rodbell, D. T.;Rowe, H. D.;Vuille, M. Palaeogeography, Palaeoclimatology, Palaeoecology, Volume: 194 p.: 123-138 (2003) 10.1016/S0031-0182(03)00274-8
Carbon isotopes in aquatic plants, Long Valley caldera, California as records of past hydrothermal and magmatic activity, Reid Jr., J. B.;Reynolds, J. L.; Connolly, N. T.; Getz, S. L.; Polissar, P. J.; Winship, L. J.; Hainsworth, L. J. Geophysical Research Letters, Volume: 25, Issue: 15 p.: 2853-2856 (1998) 10.1029/98GL01854
Using the sunspot cycle to date ice cores, Steig, E. J.;Morse, D. L.; Waddington, E. D.; Polissar, P. J. Geophysical Research Letters, Volume: 25, Issue: 2 p.: 163-166 (1998) 10.1029/97GL03566
Large amplitude solar modulation cycles of 10Be in Antarctica: implications for atmospheric mixing processes and interpretation of the ice core record, Steig, E. J.; Polissar, P. J.; Stuiver, M.; Grootes, P. M.; Finkel, R. C. Geophysical Research Letters, Volume: 23, Issue: 5 p.: 523 (1996) 10.1029/96GL00255
Sliding rocks at the Racetrack, Death Valley: What makes them move?, Reid Jr., J. B.; Bucklin, E. P.; Copenagle, L.; Kidder, J.; Pack, S. M.; Polissar, P. J.;Williams, M. L. Geology, Volume: 23, Issue: 9 p.: 819-822 (1995) 10.1130/0091-7613(1995)​023<0819:SRATRD>​2.3.CO;2
Joaquim Goes
Personal Information
Joaquim
Goes
Lamont Research Professor
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
Contact Information
7 Marine Biology
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8467

Fax: 

(845) 365-8150

Fields of interest: 

a) Marine phytoplankton physiology and productivity b) Climate change and its impact on ocean biota and biogeochemical processes c) Development of ocean color and other remote sensing algorithms and methods for studying ocean carbon cycling and air-s

My major research efforts have been directed at understanding the structure and functioning of plankton ecosystems and their response to physical forcing so that a capability can be developed to forecast responses of marine ecosystems to global change (Goes et al, 2001. 2004, 2005; Limsakul et al., 2001). For my research work I rely on an approach that examines phytoplankton at the cellular level, where changes in phytoplankton cell physiology, biochemistry and optical properties are studied as a means of evaluating their role and response to changes in the environment (Goes et al., 2002). With the help of empirical or semi-analytical modeling techniques, information obtained at the cellular level is then extrapolated to regional and global scales using data from satellites and ships. Research on this front has led to the development of satellite based methods that have made it possible to assess how large-scale climatic events such as El-Niño and La Niña, the North Atlantic Oscillation impact atmospheric CO2 draw down by phytoplankton (export production). (Goes et al, 200, 2004) Ship and satellite studies, currently underway in the Arabian Sea, have provided the first indications of rapid ecosystem changes being brought about by global warming and the rapid decline in snow over the Himalayan-Tibetan Plateau region (Goes et al.,2005, Gomes et al., 2008; 2009). Bio-optical and phytoplankton physiological studies being undertaken in the Bering Sea are aiding in the development of regional satellite ocean color algorithms that will help assess how the Bering Sea shelf ecosystem is responding to changes in sea-ice concentrations. In the Amazon River Plume, ship and satellite are being collected to help understand the influence of the Amazon River on the pelagic ecosystem, carbon cycling and sequestration in the tropical north Atlantic and the sensitivity of this ecosystem to anthropogenic climate change.

Education
Doctor of Science
Nagoya University, Japan
05/1996
Master of Science
Bombay University
09/1985
Bachelor of Science
Bombay University
06/1980
Richard Seager
Personal Information
Richard
Seager
Palisades Geophysical Institute/Lamont Research Professor
Lamont-Doherty Earth Observatory
Ocean and Climate Physics
Contact Information
105B Oceanography
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8743

Fax: 

(845) 365-8157

Fields of interest: 

My interests are in climate variability and change on timescales of seasons to millennia and in particular the causes of multiyear droughts around the world and how climate change will impact global hydroclimate. I analyze observations, proxy climate rec

I am currently the Palisades Geophysical Institute/Lamont Research Professor at the Lamont Doherty Earth Observatory of Columbia University in Palisades, New York. I gained my undergraduate degree at Liverpool University in England and came to the United States in 1983 as a graduate student at Columbia. My Ph. D work was completed in 1990 under the supervision of Professor Mark Cane and Dr. Steve Zebiak and involved using tropical atmosphere and ocean models to understand key features of the tropical climate. In 1991-2 I completed a postdoctoral appointment at the University of Washington before returning to Lamont, this time to stay.

Throughout my career I have used numerical models, observations and proxy reconstructions of past climates to understand the physical mechanisms responsible for climate variability and change on seasonal to glacial-interglacial timescales. I have a particular interest in how the variation of the tropical atmosphere-ocean system organize climate on a global scale. I have also studied the reasons why the mean climate of the planet is the way it is and why Europe has mild winters, why there is a tropical Pacific warm pool, why there are subtropical anticyclones etc. My recent work has focused on the mechanisms of persistent North American drought and its relation to tropical Pacific and tropical Atlantic Ocean temperature variations. This work has led me into studies of Medieval megadroughts in the American West and studies of the hydrological future of the West.

Education
PhD
Columbia University
1990
MA
Columbia University
1985
B.Sc
Liverpool Unversity
1983
M.Phil
Columbia University
1990
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)

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