Application of Novel Sensor Technology to Studies of the Marine Nitrogen Cycle
Project Manager and Lead Scientist: Ken Johnson
One of the goals of this project is to monitor nitrogen cycling by porting existing nitrogen sensors to Argo floats, a global array of free-drifting profiling floats that measure the temperature and salinity of the upper 2000 m of the ocean. Plans for 2008 include deployments and monitoring profiling floats now outfitted with in situ ultraviolet spectrophotometer (ISUS) sensors. The team will also demonstrate the viability of the eddy flux method for measuring sediment denitrification, adapting the eddy correlation system to depths greater than 100 m by using a deeper-rated oxygen sensor. Johnson's team will maintain and expand the Land Ocean Biogeochemical Observatory (LOBO) array of moorings in Elkhorn Slough and beyond, into the open ocean environment of Monterey Bay.