Current Projects

Marine Microbial Genomics:

• NSF Science and Technology Center, Center for Microbial Oceanography: Research and Education (C-MORE) (NSF); Co-PI with D. Karl, PI, U. Hawaii

• Team Leader for C-MORE Synthesis and Modeling Theme

Ocean Biogeochemistry and Ecosystem Dynamics

• Basin-scale and global ocean ecosystem model development and data-based evaluation (w/ K. Moore UC Irvine; K. Lindsay NCAR)
• Ocean biological feedbacks on global coupled climate-carbon cycle dynamics (w/ N. Mahowald Cornell University; I. Fung UC Berkeley; M. Behrenfeld Oregon State) (NASA)
• Hindcasting seasonal to interannual variability in air-sea CO₂ flux (w/ R. Feely, NOAA/PMEL; Mahowald Cornell University; J. Carton U. Maryland) (NASA)
• Modeling of ocean sulfur dynamics (NSF)
• Ocean iron fertilization
• Geochemical and biological impacts of ocean acidification
• Climate Process Team (CPT) on Southern Ocean water mass transformation and the carbon-cycle (w/ J. Sarmiento Princeton) (NOAA)
• Primary production and net community production in the Southern Ocean (w/ M. Bender Princeton) (NASA)
• Marine food-web in Palmer Station Antarctica Long Term Ecological Research (PAL-LTER) (NSF-OPP)
  

Ocean Satellite Remote Sensing

• Submesoscale and Mesoscale Variability in ocean color (SeaWiFS & MODIS data)
• Plankton physiological measures (w/ M. Behrenfeld, Oregon State)

Climate & Global Carbon Cycle

• Coupled climate-carbon cycle modeling in Community Climate System Model (CCSM)
• CCSM Biogeochemistry Working Group
• Carbon-climate interactions with increasing water demand (w/ I. Fung UC Berkeley)
• Satellite observations of atmospheric CO₂, NASA Ocean Carbon Observatory (OCO)
• Data assimilation of atmospheric CO₂
  • Variational methods and OSSEs (w/ D. Baker CSU)
  • NASA Global Modeling and Assimilation Office (GMAO)
    

Ocean CO₂ and Tracer Field Work

• US CLIVAR and CO₂ Programs Repeat Hydrography
• Carbon and tracer measurements as part of CLIMODE (w/ N. Bates, BIOS)