NOAA-20 VIIRS: Global Mapped Ocean Optical Properties, Near Real-time

Global satellite-derived measurements of inherent optical properties (IOP) in ocean waters. The Ocean Biology DAAC produces these near real-time 'quicklook' products using the best-available ancillary meteorological and ozone data. The data provides a snapshot from a short time period within a single orbit, with inputs and calibration noted as less than optimal.

Use Cases

• Monitor near real-time ocean color and water clarity based on inherent optical properties.
• Track phytoplankton bloom dynamics based on satellite-derived ocean optical data.
• Assimilate quicklook ocean state data into forecasting models based on the near real-time availability.
• Validate ocean biogeochemical models based on global mapped satellite observations.

Strengths

• Data is produced in near real-time, providing timely snapshots of ocean conditions.
• Products are generated by NASA's Ocean Biology DAAC, an authoritative source for ocean color data.
• Global spatial coverage from the NOAA-20 satellite's VIIRS instrument.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• The description notes inputs and calibration are 'less than optimal' for these quicklook products.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Satellite remote sensing data from the NOAA-20 spacecraft's VIIRS instrument, processed by the Ocean Biology DAAC.

Time Range

Near real-time, single-orbit snapshots.

Freshness

Last updated 2026-04-10 19:24:30.174082; freshness should be verified.

Geography

Global ocean coverage.