Sentinel-3 OLCI: Daily Coastal Water Quality

CSIRO's eReefs Phase 5 project provides daily, full-resolution satellite-derived water quality parameters for Australian coastal waters. The data, processed with the FUB-CSIRO Coastal Water Processor, includes Chlorophyll-a, CDOM, and TSS measurements at approximately 300-meter pixel resolution. Quality is controlled using a combination of standard Level 1 flags and algorithm-specific out-of-range flags.

Use Cases

• Monitoring coastal phytoplankton blooms based on Chlorophyll-a (Chl-a) concentrations.
• Tracking dissolved organic material in coastal waters using Colored Dissolved Organic Matter (CDOM) data.
• Assessing sediment load and turbidity via Total Suspended Solids (TSS) measurements.
• Quality filtering satellite data using the provided file_version_quality_control and in_out_OR_combined_flags.

Strengths

• Derived from a peer-reviewed algorithm detailed in a scientific publication (doi:10.1016/j.rse.2021.112848).
• Includes multiple quality control flag layers (Level 1 flags and algorithm-specific out-of-range flags).
• Data is reprojected onto a regular grid using nearest neighbor resampling for consistency.

Limitations

• Specific column names, row counts, file sizes, and license details are not provided in the available metadata.
• The last update date shows a conflict between sources, with entries from 2026-03-25 and 2026-04-26.

Provenance

Source

CSIRO Marlin Data Catalogue, produced under the eReefs Phase 5 project.

Collection Method

Processed from Sentinel-3 OLCI Level 2 geophysical quantities using the FUB-CSIRO Coastal Water Processor.

Freshness

Last updated 2026-04-26 (most recent entry).

Geography

Australia (coastal waters, inferred from eReefs project scope).