Ellen R.M. Druffel

Fred Kavli Professor, Earth System Science
School of Physical Sciences

Adjunct Professor - Research Associate, IOD, Scripps, UCSD

Co-Director, Keck Carbon Cycle AMS


Ph.D., U.C. San Diego, Chemistry


B.S., Loyola Marymount University, Chemistry

Phone: (949) 824-2116
Fax: (949) 824-3874
Email: edruffel@uci.edu

University of California, Irvine
Croul Hall 3222
Mail Code: 3100
Irvine, CA 92697

picture of Ellen R.M. Druffel

Research
Interests
Changes in past ocean circulation and ventilation; sources and cycling of marine dissolved and particulate carbon using AMS
   
URLs Druffel Lab website
   
Fused glass art website - E. Druffel
   
Academic
Distinctions
American Institute of Chemists Award, 1975
Macelwane Medal, AGU, 1990
Fellow of AGU, AAAS and The Oceanography Society
Hall of Fame, Loyola Marymount Univ. 2001
Ruth Patrick Award, American Society of Limnology and Oceanography, 2004
UCI NSF Advance Chair, 2003-2008
Fred Kavli Chair of Earth System Science 2013 - present
Revelle Medal, AGU, 2016
   
Research
Abstract
The goals of my research group are twofold. First, we aspire to understand why the 14C age of marine dissolved organic carbon is thousands of years old, despite the fact that most of it is produced recently in the surface ocean during photosynthesis. Second, how has circulation changed in the tropical Pacific during the past millennium? We use accelerator mass spectrometry (AMS) and preparative capillary gas chromatography (PCGC) to measure radiocarbon in samples as small as 2µg C to date the time since C was last in contact with the atmosphere. We study coral from the Pacific and Atlantic to reconstruct seasonal-to-annual records of isotopes that lend themselves well to reconstruction of past temperature, salinity and upwelling strength in surface waters.

Recent doctoral students in our group include Steve Beaupré (2007, moving to SUNY Stony Brook as Professor) and Lori Ziolkowski (2009, Professor at University of South Carolina).
   
Publications Druffel, E.R.M., S. Griffin, C. S. Glynn, R. Benner and B. D. Walker (2017). Radiocarbon in dissolved organic and inorganic carbon of the Arctic Ocean. Geophysical Research Letters, 44 DOI:10.1002/2016GL072138
   
  Rafter, P., S.C. Sanchez, J Ferguson, E.R.M. Druffel, H.D. Graven, J.R. Southon and J.D. Carriquiry (2017). Eastern tropical North Pacific coral radiocarbon reveals North Pacific Gyre Oscillation (NPGO) variability, Quaternary Science Reviews 160, 108-115.
   
  Salvatteci, R., D. Gutierrez, A. Sifeddine, L. Ortlieb, E. Druffel, and R. Schneider (2016). Centennial to millennial–scale changes in oxygenation and productivity in the Eastern Tropical South Pacific during the last 25,000 years, Quaternary Science Reviews 131, 102-117.
   
  Bolton, A, N.F. Goodkin, E.R.M. Druffel, S. Griffin, S.A. Murty (2016). Upwelling of Pacific Intermediate Water in the South China Sea revealed by coral radiocarbon record, Radiocarbon, 58 37-53.
   
  Southon, J.R., R. De Pol–Holz, E.R.M. Druffel (2016). Chapter 7: Paleoclimatology, in Radiocarbon and Climate Change: Mechanisms, Applications and Laboratory Techniques, Editors E.A.G. Schuur, S.E. Trumbore and E.R.M. Druffel, Springer International Publishing, New York/Heidelberg, 221-252
   
  Schuur, E.A.G., S.E. Trumbore, E.R.M. Druffel, J.R. Southon, A. Steinhof, R.E. Taylor, J.C. Turnbull, X. Xu (2016). Chapter 1: Radiocarbon and the Global Carbon Cycle, in Radiocarbon and Climate Change: Mechanisms, Applications and Laboratory Techniques, Editors E.A.G. Schuur, S.E. Trumbore and E.R.M. Druffel, Springer International Publishing, New York/Heidelberg, 1-19
   
  Druffel, E.R.M., S.R. Beaupré and L.A. Ziolkowski (2016). Chapter 5: Radiocarbon in the Oceans, in Radiocarbon and Climate Change: Mechanisms, Applications and Laboratory Techniques. Editors E.A.G. Schuur, S.E. Trumbore and E.R.M. Druffel, Springer International Publishing, New York/Heidelberg, 139-166.
   
  Coppola, A.I. and E.R.M. Druffel (2016). Cycling of black carbon in the oceans. Geophysical Research Letters, 43 DOI:10.1002/2016GL068574.
   
  Druffel, E.R.M., S. Griffin, * A. I. Coppola, and B. D. Walker (2016). Radiocarbon in dissolved organic carbon of the Atlantic Ocean. Geophysical Research Letters, 43, doi:10.1002/2016GL068746.
   
  Walker, B.D., S. Griffin and E.R.M. Druffel. Effect of acidified versus frozen storage on marine dissolved organic carbon concentration and isotopic composition, Radiocarbon, 58 DOI:10.1017/RDC.2016.48.
   
  Walker, B.W. S.R. Beaupré, T.P. Guilderson, M.D. McCarthy, E.R.M. Druffel, (2016). Pacific carbon cycling constrained by organic matter size, age and composition relationships, Nature Geoscience doi:10.1038/ngeo2830.
   
  Walker, B.D., F.W. Primeau, S.R. Beaupré, T.P. Guilderson, E.R.M. Druffel, M.D. McCarthy (2016). Linked changes in marine dissolved organic carbon molecular size and radiocarbon age. Geophysical Research Letters, 43 DOI/10.1002/2016GL070359.
   
  Wang, X., C. Xu, E.R.M. Druffel, Y. Xue and Y. Qi (2016). Two black carbon pools transported by the Yangtze and Yellow Rivers, Global Biogeochemical Cycles, doi:10.1002/2016GB005509.
   
Grants NSF Chemical Oceanography
   
The Kavli Foundation
   
American Chemical Society Petroleum Research Fund Grant
   
Professional
Society
AAAS, AGU, ASLO, TOS
   
Other Experience Scientist
Woods Hole Oceanographic Institution 1981—1993

Visiting Scholar
University of California, Santa Cruz 1987—1988

Research Center W. M. Keck Carbon Cycle Accelerator Mass Spectrometry Laboratory
   
   
Link to this profile http://www.faculty.uci.edu/profile.cfm?faculty_id=2027
   
Last updated 05/31/2017