The Biogeochemical Sensors sub-facility collects high-quality biogeochemical data from two ships.

The Antarctic re-supply vessel, L’Astrolabe is one of the few vessels that has a repeat track in the Southern Ocean, between Hobart and the French Antarctic base, Durmont d’Urville on the Antarctic continent, making it one of the most comprehensive repeat observing platforms in the Southern Ocean. 

The RV Southern Surveyor, which operates from the tropics to 50°S, is also instrumented to collect biogeochemical data.  These data help to determine the regional uptake of carbon dioxide around Australia and in the Southern Ocean and provide data to evaluate biogeochemical models of the region.

For more details on instrumentation see here.