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Prof. Karen Kohfeld

Karen Kohfeld

School of Resource & Environmental Management
Simon Fraser University
8888 University Drive
V5A 1S6 Burnaby
BC
Canada

  ...
  +1 778 782 7651
  http://www.rem.sfu.ca/index.htm
  http://www.rem.sfu.ca/faculty/kohfeld.htm

Expertise & Interests

Overview / specialty        Dr. Kohfeld is interested in understanding natural variability and biogeochemical linkages within the ocean and climate system, in order to better assess earth system responses to anthropogenic perturbations. Her research focuses on natural and anthropogenic changes in the ocean carbon cycle, the influence of climate and land surface conditions on atmospheric dust, and assessing and adapting to extreme weather conditions in British Columbia.
 
Official PAGES function(s)        C-SIDE Steering Group member and mailing list administrator
PAGES interests        C-SIDE
 
Topics        Biogeochemical processes, Carbon cycle, Climate dynamics, Climate variability, Data Stewardship, Ecosystem processes, Fire, Forests, Interannual-decadal varaibility, Proxy development
Timescales        Anthropocene (last 100 years), Holocene, Last millennia, Last glacial cycle, Observational period, Pleistocene
Regions        Global, Mid-latitude Northern Hemisphere, Mid-latitude Southern Hemisphere, North America, World ocean
Archives        Lake sediments, Loess, Ocean sediments, Pollen, Tree rings
Sector        Academia / Education
Discipline        (Micro)paleontology, (Paleo)climatology, (Paleo)ecology, (Paleo)limnology, (Paleo)oceanography

 

Publications

Kohfeld KE, and Z Chase, Temporal evolution of mechanisms controlling ocean carbon uptake during the last glacial cycle, in press, Earth and Planetary Science Letters 472: 206-215, http://dx.doi.org/10.1016/j.epsl.2017.05.015, 2017.

Chase, Z, KE Kohfeld, K. Matsumoto, Controls on rates of opal burial in the Southern Ocean, Global Biogeochemical Cycles 29(10): 1599-1616, 2015.

Albani, S, NM Mahowald, G. Winckler, RF Anderson, LI Bradtmiller, B Delmonte, R Francois, M Goman, NG Heavens, PP Hesse, SA Hovan, KE Kohfeld, H Lu, V Maggi, JA Mason, PA Mayewski, DM McGee, X Miao, DR Muhs, BL Otto-Bleisner, AT Perry, A Pourmand, HM Roberts, N Rosenbloom, T Stevens, and J Sun, 12,000 years of dust: the Holocene global dust cycle constrained by natural archives, Climate of the Past 11(6): 893-903, 2015.

Matsumoto, K., Z. Chase, KE Kohfeld, Different mechanisms of silicic acid leakage and their biogeochemical consequences, Paleoceanography, 29, DOI: 10.1002/2013PA002588, 2014.

Kohfeld, KE, R. Graham, A. De Boer, LC. Sime, EW Wolf, C. Le Quere, and L. Bopp, Glacial-interglacial changes in Southern Hemisphere Westerly Winds: Paleo-data synthesis, Quaternary Science Reviews, doi:10.1016/j.quascirev.2013.01.017, 2013.

Sime, LC., KE Kohfeld, EW Wolff, A De Boer, C. Le Quere, and L. Bopp, , Glacial-interglacial changes in Southern Hemisphere Westerly Winds: Model-data comparison, Quaternary Science Reviews, 64: 104-120, doi: 10.1016/j.quascirev.2012.12.008, 2013.

Kohfeld, KE, and Z. Chase, Controls on deglacial changes in biogenic fluxes in the North Pacific Ocean, Quaternary Science Reviews, 30 (23-24): 3350-3363, doi:10.1016/j.quascirev.2011.08.007, 2011.

Kohfeld, KE, C Le Quéré, R.F. Anderson and S.P. Harrison, Role of marine biology in glacial-interglacial CO2 cycles, Science, 308 (5718): 74-78, 2005.

Bopp, L, KE Kohfeld, C Le Quéré, O Aumont, Dust impact on marine biota and atmospheric CO2 during glacial periods, Paleoceanography, 18, 10.1029/2002PA000810, 2003.

Kohfeld, KE, and SP Harrison, DIRTMAP: The geological record of dust, Earth Science Reviews, 54 (1-3): 81-114, 2001.

Mahowald, N, KE Kohfeld, M Hansson, Y Balkanski, SP Harrison, IC Prentice, H Rodhe, and M Schulz, Dust sources and deposition during the Last Glacial Maximum and current climate: A comparison of model results with paleodata from ice cores and marine sediments. JGR-Atmospheres, 104(D13): 15,895-15,916, 1999.

Kohfeld, KE, RG Fairbanks, SL Smith, and IA Walsh, Neogloboquadrina pachyderma (sinistral coiling) as paleoceanographic tracers in polar oceans: Evidence from Northeast Water Polynya plankton tows, sediment traps, and surface sediments. Paleoceanography, 11(6): 679-699, 1996.