“Chucking objects and instruments into the ocean for scientific study is a time-honored method … In Bidder’s time, the most he could hope for was information on a bottle’s release point and where it washed ashore. Deep-sea floats in the Argo network can track ocean currents from the sea surface to 6,600 feet (2,000 meters) deep. New float designs will enable even deeper examinations of ocean currents at 19,700 feet (6,000 meters).”
“a lot of excitement in Deep Argo has to do with the ocean circulation and ocean circulation changes that are responsible for getting these property changes into the deep oceans”
3,628 free-drifting profiling Argo floats are currently measuring the temperature and salinity of the upper 2000 m of the ocean.
“Argo is one of the scientific triumphs of the age ”