I teach ISC12003 Global Change Science. I am interested in CO2 exchange between the ocean and the atmosphere, and the impacts of ocean acidification. I am funded by NSF to participate in the CLIVAR US Repeat Hydrography Program, collecting trace element samples on their cruises to quantify the availability of micronutrient trace elements including Mn, Fe, CO, Ni, Cu, Zn, and Cd. These are essential for phytoplankton growth, and they can be bio-limiting at low concentrations. We also collect samples to quantify atmospheric deposition of these same trace elements (aerosols and precipitation).