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Druffel, Ellen

Professor, UCI, Earth System Science

Research Associate, SIO, IOD

Degrees:

• B.S., Loyola Marymount University
• M.S., U.C. San Diego
• Ph.D., U.C. San Diego

Research Interests:

• Changes in past ocean circulation and ventilation
• Sources and cycling of marine dissolved and particulate carbon using AMS

Honors and Awards:

• Macelwane Medal, AGU, 1990
• Fellow of the AGU and AAAS
• Hall of Fame, Loyola Marymount Univ. 2001
• Ruth Patrick Award, ASLO, 2004
• UCI Advance Chair, 2003-present

Mentoring:

• Vetter, Desirée (Undergrad; 2008-2009)
• Beaupré, Steve (Post Doc; 2007-2009)
• Ziolkowski, Lori (Graduate; 2004-2009)

* Drenzek, Nicholas J., Konrad A. Hughen, Daniel B. Montluçon, John R. Southon, Guaciara M. dos Santos, Ellen R. M. Druffel, Liviu Giosan, and Timothy I. Eglinton, A new look at old carbon in active margin sediments, accepted for publication in Geology.

Druffel, E.R.M., J.E. Bauer, S. Griffin, * S.R. Beaupré, * J. Hwang (2008). Dissolved inorganic radiocarbon in the North Pacific Ocean and Sargasso Sea, Deep-Sea Research I, 55 (4), 451-459. doi:10.1016/j.dsr.2007.12.007

Druffel, E.R.M., LF. Robinson, S. Griffin, R. Halley, J. Southon and J.F. Adkins (2008). Low reservoir ages for the surface ocean from mid-Holocene Florida corals, Paleoceanography, doi:10.1029/2007PA001527.

Druffel, E.R.M. and S. Griffin (2008). Daily variability of dissolved inorganic radiocarbon at three sites in the surface ocean, Marine Chemistry, 110, 185-189.

Santos, G.M., J.R. Southon, S. Griffin, * S.R. Beaupré and E.R.M. Druffel (2007). Ultra small-mass 14C-AMS sample preparation and analyses at KCCAMS Facility, Nuclear Instrumentation and Methods in Physics Research B, 259, 293-302.

Druffel, E.R.M., S. Griffin, S. R. Beaupré and R. B. Dunbar (2007) Oceanic climate and circulation changes during the past four centuries from radiocarbon in corals, Geophysical Research Letters, 34, doi:10.1029/2006GL028681.

* Beaupre, S.R., E.R.M. Druffel and S. Griffin, (2007). A low-blank photochemical extraction system for concentration and isotopic analyses of marine dissolved organic carbon, Limnology and Oceanography: Methods, 5, 174-184.

* K. McDuffee and E.R.M. Druffel, (2007). Daily variability of dissolved inorganic radiocarbon in Sargasso Sea surface water, Marine Chemistry, 106, 513-518.

* Hwang, J., E.R.M. Druffel, and J.E. Bauer (2006), Incorporation of aged dissolved organic carbon (DOC) onto oceanic particulate organic carbon (POC): an experimental approach using carbon isotopes, Marine Chemistry, 98, 315-322.

Ingalls, A.E., S.R. Shah, R.L. Hansman, L.I. Aluwihare, G.M. Santos, E.R.M. Druffel, A. Pearson (2006). Quantifying archaeal community autotrophy in the mesopelagic ocean using natural radiocarbon. Proceedings of the National Academy of Sciences, 103 (17), 6442-6447.

* Hwang, J. and E.R.M. Druffel, T.I. Eglinton, and D.J. Repeta (2006). Source(s) and cycling of the non-hydrolyzable organic fraction of oceanic particles, Geochim. Cosmochim. Acta, doi:10.1016/j.gca.2006.07.020.

* Hwang, J. and E.R.M. Druffel, (2006) Carbon isotope ratios of organic compound fractions in oceanic suspended particles, Geophysical Research Letters, 33, L23610, doi:10.1029/2006GL027928.

Druffel, E.R.M., J.E. Bauer and S. Griffin (2005). Input of particulate organic and dissolved inorganic carbon from the Amazon to the Atlantic Ocean, Geochemistry, Geophysics and Geosystems, 6(3), Q03009, doi:10.1029/2004GC000842.

* Hwang, J. and E.R.M. Druffel (2005). Blank correction for ∆14C measurements in organic compound classes of oceanic particulate organic carbon, Radiocarbon, 47 (1), 75–87.

* Komada, T., E.R.M. Druffel and * J. Hwang (2005), Sedimentary rocks as sources of ancient organic carbon to the ocean: An investigation through ∆14C and δ13C signatures of compound classes, Global Biogeochemical Cycles, 19, GB2017, doi:10.1029/2004GB002347.

* Hwang, J., E.R.M. Druffel, and * T. Komada (2005). Transport of organic carbon from the California coast to the slope region: A study of ∆14C and δ13C signatures of organic compound classes, Global Biogeochemical Cycles, 19, GB2018, doi:10.1029/2004GB002422.

J. Southon, G.M. Santos, E.R.M. Druffel, S. Griffin, S.E. Trumbore and X. Xu (2005). High throughput, high precision 14C AMS with a small accelerator. International Symposium on Utilization of Accelerators, Dubrovnik, Croatia, 05-09 June 2005. IAEA-CN-115-10.

* Komada, T., E. R. M. Druffel, S. E. Trumbore, (2004) Oceanic export of relict carbon by small mountainous rivers. Geophysical Research Letters, 31 (7) 7504, doi:10.1029/2004GL019512.

* Hwang, J., E.R.M. Druffel, S. Griffin, K.L. Smith, Jr., R.J. Baldwin, J.E. Bauer (2004). Temporal variability of ∆14C and δ13C in sinking POC at a deep time-series station in the Northeast Pacific Ocean, Global Biogeochemical Cycles, 18, GB4015, doi:10.1029/2004GB002221.

* Loh, A.N., J.E. Bauer and E.R.M. Druffel (2004). Variable aging and storage of dissolved organic components in the open ocean, Nature, 430 (7002) 877-881.

Southon, J.G. M. Santos, * K.C. Druffel-Rodriguez, E.R.M. Druffel, S.E. Trumbore, X. Xu, S. Griffin; S. Ali; * M. Mazon (2004). The Keck Carbon Cycle AMS Laboratory, U.C.I.: Initial operation and a background surprise. Radiocarbon, 46 (1), 41-50.

Druffel, E.R.M, S. Griffin, * J. Hwang, * T. Komada, * S.R. Beaupre, * K.C. Druffel-Rodriguez, G.M. Santos and J. Southon (2004) Variability of radiocarbon during the 1760s in monthly corals from the Galapagos Islands, Radiocarbon, 46 (2), 627-632.

Druffel, E.R.M, (2004). Comments on the importance of black carbon in the global carbon cycle, Marine Chemistry, 92, 197-200.

* Masiello, C.A. and E.R.M. Druffel (2003) Organic and black carbon 13C and 14C through the Santa Monica Basin sediment oxic-anoxic transition, Geophysical Research Letters, 30 (4), 1185, doi:10.1029/2002GL15050.

Ingalls, A.E., C. Lee and E.R.M. Druffel (2003) Preservation of organic matter in mound-forming coral skeletons, Geochimica et Cosmochimica Acta 67 (15), 2827-2841.

* Hwang, J and E.R.M. Druffel (2003). Lipid-like material as the source of the uncharacterized organic carbon in the ocean? Science 299, 881-884.

Druffel, E.R.M., J.E. Bauer, S. Griffin and * J. Hwang, (2003) Penetration of anthropogenic carbon into organic particles of the deep ocean, Geophysical Research Letters, 30, 14, 1744, doi:10.1029/2003GL017423.

* Grottoli, A., S. Gille, E.R.M. Druffel and R. Dunbar (2003). Decadal timescale shift in the radiocarbon record of a central equatorial Pacific coral, Radiocarbon, 45, 91-99.