Global Argo free-drifting profiling floats

Argo is a global array of 3,000 free-drifting profiling floats that measure the temperature and salinity of the upper 2000 m of the ocean. This allows, for the first time, continuous monitoring of the temperature, salinity, and velocity of the upper ocean, with all data being relayed and made publicly available within hours after collection. Argo was designed to effectively monitor the pulse of the global heat balance. It will improve our understanding of the ocean's role in climate, as well as spawning an enormous range of valuable ocean applications.

Argo is a major contributor to the WCRP's Climate Variability and Predictability Experiment ( CLIVAR) project and to the Global Ocean Data Assimilation Experiment (GODAE). The Argo array is part of the Global Climate Observing System/Global Ocean Observing System GCOS/ GOOS)
Above cited from Argo project homepage.

APDRC is one of Regional Data Center (RDC) for Argo data distribution.

Temperature (°C), Salinity (psu)
ZonalGlobal by varies
MeridionalGlobal by varies
VerticalNA to NA, by varies
TemporalMay 1998 to Present by varies
Acquired Jan 1, 2002 (Updated Weekly)
APDRC contact
SupplementsArgo data guide (pdf- from