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| ELLEN DRUFFEL |
Professor
Physical Sciences
Earth System Science
Degrees
B.S., Chemistry, Loyola-Marymount University, Los Angeles, 1975.
M.S., Chemistry, University of California, San Diego, 1977.
Ph.D., Chemistry, University of California, San Diego, 1980.
Distinctions
Chemistry Teaching Awards, Loyola-Marymount University, 1974, 1975.
American Institute of Chemists Award, 1975.
Chemistry Teaching Award (Revelle College), University of California, San Diego, 1976.
Visiting Professorships for Women Award, National Science Foundation, 1987.
James B. Macelwane Medal, American Geophysical Union, 1990.
Fellow of the American Geophysical Union, 1990.
Best Paper Award, Organic Geochemistry Division of Geological Society of America, 1998 (Eglinton et al, 1997).
UCI, School of Physical Sciences Award for Excellence in Teaching, 2001.
Elected into the Hall of Fame, College of Science and Engineering Hall of Fame, Loyola Marymount University, 2001.
Fellow of the A.A.A.S., 2001
UCI ADVANCE Term Chair 2003-08
Research Summary:
Dr. Druffel’s primary area of research is in the study of the carbon cycle in the upper ocean as related to past and present circulation changes and global climate change. She also examines the coupling between climate and ocean ventilation and their effects on global CO2 cycling. She uses high-precision radiocarbon using AMS (accelerator mass spectrometry) and stable carbon and oxygen isotope analyses to determine decade time scale changes in the ventilation rate of upper waters in major oceanic current systems during the past few centuries.
Dr. Druffel also examines the sources and turnover times of organic matter within the oceans. Using AMS to measure radiocarbon in small amounts of carbon. (0.1-1 mg C), her goals are: (1) assessment of the contribution of deep dissolved organic carbon to the POC (particulate organic carbon) pool, (2) determining the relative amount of terrestrially-derived carbon to the DOC (dissolved organic carbon) pool, and (3) estimating the turnover time of DOC in the oceanic water column through measurements of radiocarbon activities of organic constituents in DOC and in sinking and suspended POC. These studies have direct implications for ascertaining the magnitude of the ocean repository for excess atmospheric CO2 and for estimating, in part, the extent of the anticipated greenhouse effect.
Publications:
Lipid-like material as the source of the uncharacterized organic carbon in the ocean? Jeomshik Hwang and Ellen R. M. Druffel (2003), Science, 299, 881-884.
Organic and black carbon 13C and 14C through the Santa Monica Basin sediment oxic-anoxic transition, Masiello, C.A. and E.R.M. Druffel Geophysical Research Letters, 30 (4), art. no. 1185 Feb 26, 2003.
Preservation of organic matter in mound-forming coral skeletons, Ingalls, A.E., C. Lee and E.R.M. Druffel, Geochimica et Cosmochimica Acta, in press, 2003.
Methods for determining ages of deep-sea corals using 230Th and 14C dating, Adkins, J. A., et al. Radiocarbon, 44, 567-580.
A critical evaluation of interlaboratory data on total, elemental and isotopic carbon in the carbonaceous particle reference material, NISTSRM 1649a, Currie, LA, BA Benner, H Cachier, R Cary, JC Chow, ERM Druffel, TI Eglinton, O Gustafsson, PC Hartman, JI Hedges, JD
Kessler, TW Kirchstetter, DB Klinedinst, GA Klouda, SD Kohl, JV Marlof, CA Masiello, T Novakov, A Pearson, KM Prentice, H Puxbaum, JG Quinn, CM Reddy, H Schmid, JF Slater and SA Wise, Environmental Science and Technology. 2003.
Radiocarbon in Corals: Records of the Carbon Cycle, Surface Circulation and Climate, Druffel, E.R.M., Oceanography 2002.
Temporal and regional variability of sources and cycling of DOC and POC in the Northwest Atlantic continental shelf and slope, Bauer, J.E., E.R.M. Druffel, D. Wolgast, and S. Griffin, Deep-Sea Research II, 2002.
Professional Associations:
American Geophysical Union
The Oceanography Society
Union of Concerned Scientists
American Association for the Advancement of Science
Office Address:
University of California, Irvine
Physical Sciences
Earth System Science Department
270 Rowland Hall
Mail code: 3100
Irvine, CA 92697
Telephone: (949) 824-2116
Lab: (949) 824-3286
Fax: (949) 824-3256
E-mail: edruffel@uci.edu
Web: www.ess.uci.edu/~druffel/