Philip Sutton, National Institute of Water and Atmospheric Research, New Zealand
"Argo” is a system for observing the temperature, salinity, and currents in the Earth's oceans. Operational since the early 2000s, the data it provides are used in climate and oceanographic research and a special research interest is to quantify the ocean heat content (OHC). It consists of a fleet of 3600 drifting profiling floats deployed worldwide. Each Argo float weighs 20–30 kg, as oceanographer Philip Sutton, from New Zealand's National Institute of Water and Atmospheric Research, explains to Chris Smith and Simon Morton...