Sentinel-3 Coastal Water Quality Daily Satellite Imagery

CSIRO's eReefs project provides daily, reprojected Level 2P water quality data derived from Sentinel-3 OLCI satellite imagery at approximately 300-meter resolution. The dataset includes key parameters like chlorophyll-a (Chl-a), colored dissolved organic matter (CDOM), and total suspended solids (TSS), processed using the FUB-CSIRO Coastal Water Processor. It is hosted on the Australian government's data platform and maintained by the CSIRO Marlin Data Catalogue.

Use Cases

• Monitoring phytoplankton biomass and algal blooms using the chlorophyll-a (Chl-a) concentration layer.
• Assessing dissolved organic matter transport in coastal waters via the colored dissolved organic matter (CDOM) parameter.
• Tracking sediment plumes and turbidity by analyzing the total suspended solids (TSS) measurements.
• Applying quality control flags (file_version_quality_control, in_out_OR_combined_flags) to filter unreliable pixel data for analysis.
• Studying daily changes in coastal water composition using the reprojected, gridded geospatial data.

Strengths

• Data is produced using a peer-reviewed scientific processor, documented at https://doi.org/10.1016/j.rse.2021.112848.
• Includes multiple quality flag layers (Level 1 flags and in_out_OR_combined_flags) for detailed data validation.
• Provides daily temporal resolution for monitoring short-term environmental changes.
• Offers full-resolution satellite data at approximately 300 meters per pixel for detailed spatial analysis.

Limitations

• Key metadata such as row count, file size, specific column names, and license are unavailable from the provided sources.
• There is a conflict in the 'last updated' dates between the sources (2026-04-08 and 2026-03-20), creating uncertainty about freshness.

Provenance

Source

CSIRO under the eReefs Phase 5 project, using Sentinel-3 OLCI satellite data.

Collection Method

Derived from Level 2 geophysical quantities and reprojected onto a regular grid using nearest neighbor resampling.

Time Range

Daily coverage; specific start and end dates are not provided.

Freshness

2026-04-08 04:30:20.222728

Geography

Coverage is not explicitly stated but implied to be Australian coastal waters, given the eReefs project and platform.