Argo is an international program that calls for the deployment of 3,000 free drifting profiling floats, distributed over the global oceans, which will measure the temperature and salinity in the upper 2,000m of the ocean providing 100,000 T/S profiles and reference velocity measurements per year. This broad-scale global array of temperature/salinity profiling floats has already grown to be a major component of the ocean observing system. The program has changed the way scientists think about collecting data and provided additional spin off such as how to collaborate internationally and how to develop a data management that can be used for the scientific community. Data is crucial for weather forecast and provides information for climate and the biological ocean.

The international Argo community maintains a web portal where the Argo project information is shared.