Global satellite-derived measurements of inherent optical properties (IOPs) of seawater, produced by the Ocean Biology DAAC. The data provides per-pixel coefficients for total absorption and backscattering, supporting near real-time monitoring. It is generated using the Generalized Inherent Optical Properties (GIOP) model framework applied to VIIRS sensor data.
Use Cases
- Water-type classification based on per-pixel inherent optical properties.
- Water-clarity assessment using total absorption and backscattering coefficients.
- Biogeochemical studies leveraging phytoplankton and CDOM/detritus absorption coefficients.
- Forward/adjoint radiative-transfer applications based on IOPs.
- Cross-sensor satellite comparisons using the more robust IOP framework.
Strengths
- Provides near real-time (NRT) data, offering a snapshot within a single orbit.
- Includes specific geophysical variables like absorption coefficients at 445 nm with associated uncertainty estimates.
- Supports multiple applications including water-type classification and biogeochemical studies as described.
Limitations
- Description metadata is limited; actual data quality requires manual inspection after download.
- Row count, column details, and file formats are unknown, which may limit suitability assessment.
- The description notes NRT products use 'less than optimal' inputs and calibration compared to standard products.
Provenance
- Source
- Ocean Biology DAAC (OB_CLOUD) via NASA Earthdata (nasa_earthdata).
- Collection Method
- Derived from NOAA-21 VIIRS satellite sensor data using the Generalized Inherent Optical Properties (GIOP) model framework.
- Freshness
- Near real-time (NRT); specific update frequency is unknown.
- Geography
- Global