GO-SHIP Repeat Hydrography Expedition

The Global Ocean Ship-based Hydrographic Investigations program (GO-SHIP) brings together physical oceanographers, carbon cycle experts, and marine biogeochemists to coordinate a network of globally sustained hydrographic sections as part of the global ocean/climate observing system. GO-SHIP provides approximately decadal resolution of the changes in inventories of heat, freshwater, carbon, oxygen, nutrients and transient tracers, covering the ocean basins from coast to coast and full depth (top to bottom), with global measurements of the highest required accuracy to detect these changes. The GO-SHIP principal scientific objectives are: (1) understanding and documenting the large-scale ocean water property distributions, their changes, and drivers of those changes, and (2) addressing questions of how a future ocean will increase in dissolved inorganic carbon, become more acidified and more stratified, and experience changes in circulation and ventilation processes due to global warming and altered water cycle. I was invited by researchers from UCSB, Dr. Norman Nelson and Dr. David Siegal, to aid in bio-optical and radiometric instrument deployments as well water sample collection and processing for phytopolankton biomass and colored dissolved organic matter (CDOM) on the IO9N leg of the 2016 45 day expedition from Fremantle, Western Australia to Phuket, Thailand abourd the R/V Roger Revelle. I was also in charge of assembly, maintenance, and measurements from an underway flow-through optical system which continuously measured absoprtion, scattering, and fluorescence from the surface ocean.