Princeton University

The earth system involves interactions amongst the physical climate, chemical cycles and living organisms. Faculty and staff in the global biogeochemical cycles focus area work on characterizing these interactions, developing numerical models of them, and using these models to evaluate how changes in one part of the system affect other parts. Examples of the questions studied include:

*How much carbon dioxide is taken up by terrestial ecosystems and the ocean?
*Why is atmospheric carbon dioxide lower during glacial periods?
*How will climate change affect fisheries?
*How do changes in the biosphere directly affect the physical climate?
*How do the nitrogen, carbon, and silicon cycles interact?

Faculty
Michael Bender - High-precision measurements of gasses, global productivity (Geosciences)
Anand Gnanadesikan - Ocean biosphere-physics interactions
Hiram Levy - Biogeochemical cycles of carbon and nitrogen
Steve Pacala - Modeling terrestrial ecology, carbon cycle dynamics (EEB)
Jorge Sarmiento - Carbon and nitrogen cycles, global change impacts on ecosystems

Associated GFDL Research Staff
John Dunne - Ocean biogeochemistry and earth system modelling
Songmiao Fan - Aerosol iron and ocean biogeochemistry
Arlene Fiore - Chemistry-climate interactions
Larry Horowitz - Chemistry-climate interactions
Ron Stouffer - Biosphere-climate interactions
Robbie Toggweiler - Global carbon cycle and paleoclimate
Marian Westley - Oceanic nitrogen cycling

Princeton Research Staff/Postdoctoral Fellows
Whit Anderson - Ocean color/climate interactions
Cyril Crevoisier -Characterizing carbon cycle from space
Eric Galbraith -Paleoclimate modeling
Stefan Gerber - Modeling the terrestrial nitrogen cycle (EEB)
Bob Key - Oceanic measurement and synthesis of carbon and associated tracers
Sergey Malyshev - Modeling terrestrial ecosystems, carbon cycle (EEB)
Sara Mikaloff Fletcher - Atmospheric and oceanic inversions of the carbon cycle
Mike Hiscock - Light limitation of phytoplankton
Keith Rodgers - Interannual variability of biogeochemical cycles
Elena Shevliakova - Modelling terrestrial ecosystems, carbon cycle (EEB)

Graduate Students
Daniele Bianchi - Studying the ocean circulation with Helium-3
Kelly Kearney - Climate change and fisheries (Geosciences)
Yves Plancherel - Biogeochemical cycles from water mass analysis (Geosciences)
Patrick Schultz - Characterizing phytoplankton from space (Geosciences)

Technical Staff
Jennifer Simeon - Modeling ocean circulation and biogeochemistry
Rick Slater - Modeling ocean biogeochemical cycles