IMOS - NOAA20 Satellite Chlorophyll-a Concentration (OCI Model)

NOAA20 satellite VIIRS sensor data provides multi-spectral measurements of sunlight reflected from the ocean surface layer. These measurements are processed using the OCI algorithm to infer chlorophyll-a concentration, a key indicator of phytoplankton presence. The data is provided by the Australian Ocean Data Network and was last updated on 2026-07-13.

Use Cases

• Monitoring phytoplankton biomass and algal blooms based on chlorophyll-a concentration estimates.
• Studying ocean primary productivity and biogeochemical cycles based on satellite-derived chlorophyll data.
• Validating and calibrating ocean color models based on the OCI algorithm implementation.
• Assessing coastal water quality and ecosystem health based on inferred phytoplankton presence.

Strengths

• Data originates from the NOAA20 satellite's VIIRS sensor, a dedicated environmental monitoring platform.
• Uses the OCI algorithm recommended by NASA's Ocean Biology Processing Group, suggesting a standardized methodology.
• Last updated on 2026-07-13, indicating recent maintenance.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and spatial/temporal coverage are unknown, which may limit suitability assessment.
• Data may reflect geographic or temporal bias inherent to the data_gov_au source and satellite coverage.

Provenance

Source

Australian Ocean Data Network via data_gov_au, from the NOAA20 satellite.

Collection Method

Satellite remote sensing via the VIIRS sensor, processed using the OCI algorithm in SeaDAS software.

Freshness

Last updated 2026-07-13 20:11:28.766809