Argo Float Data: Global Ocean Temperature and Salinity Profiles

The dataset contains real-time observations from a global array of over 3,000 autonomous profiling floats. Each float cycles approximately every 10 days, recording temperature and salinity measurements from the upper 2000 meters of the ice-free oceans, along with mid-depth current data. Argo Australia contributes specific observations from the oceans surrounding Australia, with data mirrored and updated regularly.

Use Cases

• Monitoring ocean heat content and sea surface temperature trends based on high-quality temperature profiles.
• Studying global and regional salinity patterns and freshwater fluxes based on salinity measurements.
• Validating and improving ocean circulation models based on mid-depth current data.
• Investigating seasonal and interannual climate variability (e.g., ENSO) based on time-series data from float cycles.

Strengths

• Global coverage from over 3,000 autonomous floats, providing a high-density observational network.
• High-quality, standardized measurements of temperature and salinity from the upper 2000m of the ocean.
• Provides near-real-time data with regular updates, as indicated by the mirrored server structure.

Limitations

• Key metadata (exact column names, row counts, license, author) is missing from all provided sources.
• Spatial coverage is limited to 'ice-free oceans', excluding polar regions with significant sea ice.
• Conflicting 'last updated' dates (2026-04-10 and 2026-03-21) suggest potential metadata inconsistency.

Provenance

Source

International Argo Program and Argo Australia, managed by the Australian Ocean Data Network and CMAR.

Collection Method

Data collected by battery-powered autonomous floats that drift at depth, ascend to surface every ~10 days to transmit measurements via satellite.

Time Range

Ongoing real-time observations; each float is designed for approximately 150 cycles.

Freshness

2026-04 10 21:32:08.438825

Geography

Global coverage of ice-free oceans, with specific contributions from oceans surrounding Australia.