Current research

SOCCOM (Southern Ocean Carbon and Climate Observations and Modeling). The primary goal of SOCCOM is to improve coupled climate models, to be accomplished through greatly increased understanding and quantification of biogeochemical (carbon) processes in the Southern Ocean. Because of the enormous gaps in Southern Ocean observing, SOCCOM is instrumenting the Southern Ocean with profiling biogeochemical Argo floats, and using a biogeochemical Southern Ocean State Estimate (B-SOSE) to assimilate these and other large data sets. SOCCOM is led by Jorge Sarmiento (Princeton Univ.), with associate director Ken Johnson (MBARI). The modeling component is led by Joellen Russell (U. Arizona). The observing system is led by Lynne Talley (SIO) and Steve Riser (U. Washington), with support from Emmanuel Boss (U. Maine) and O. Schofield (Rutgers).  SIO organizes the SOCCOM float deployments and supporting shipboard measurements (SIO STS/ODF and A. Dickson laboratory), and data tracking. B-SOSE is produced by Matt Mazloff and Ariane Verdy (SIO). SIO’s Sarah Gille is a co-PI.  SOCCOM’s funding began in 2014, and will continue through 2024.

SOCCOM research at SIO includes analysis of SOCCOM float data, B-SOSE output, and coupled climate model output, and observing system design. Three PhD students are currently associated with the program (P. Chamberlain, J.-R. Shi, C. Prend), and one postdoc (TBN).

U.S. GO-SHIP. The U.S. GO-SHIP Program is a systematic re-occupation of key global hydrographic sections that began in 2003. The sections span all ocean basins and are full-depth, with physical and chemical measurements of the highest ‘reference standard’ accuracy, attainable only with research ships for the foreseeable future. The U.S. program is a major contributor to the international Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP), designed to monitor the ocean’s response to climate change; GO-SHIP is part of the WCRP’s Global Ocean Observing System. SIO academic researchers (L. Talley, I. Rosso, S. Purkey, T. Martz) provides project leadership and management. SIO Shipboard Technical Support (Oceanographic Data Facility) has provided the backbone technical support and measurements for U.S. GO-SHIP and predecessor programs since the 1970s.

GO-SHIP research at SIO includes analysis of shipboard hydrographic data and the many ancillary data sets. Each US GO-SHIP cruise has multiple graduate student positions available, and many SIO graduate students have participated on US GO-SHIP cruises, which provide excellent training. Data analysis is funded separately, and many SIO graduate students have incorporated the data sets in their research.