VJ143D10: VIIRS BRDF Isotropic Parameter for Band M4 Daily Global Climate Grid

Global daily data provides the isotropic model parameter for the Bidirectional Reflectance Distribution Function (BRDF) and Albedo derived from the NOAA-20 VIIRS satellite's M4 band (0.555 μm). This single-layer product is generated at a 30 arc-second (1,000 meter) resolution using a 16-day rolling window of observations, temporally weighted to the ninth day, and formatted on a Climate Modeling Grid (CMG) for global climate simulation models. The isotropic parameter, alongside volumetric and geometric parameters, is used to calculate surface reflectance anisotropy and albedo for the green visible spectrum.

Use Cases

• Modeling surface albedo for climate simulations based on the Climate Modeling Grid (CMG) format.
• Analyzing land surface anisotropy and reflectance in the green spectrum (0.555 μm) using the BRDF isotropic parameter.
• Integrating daily, globally-complete land surface data into time-series analyses of radiative properties.
• Assessing surface changes by combining this parameter with its volumetric and geometric counterparts from the VJ143D product suite.

Strengths

• Provides global coverage on a Climate Modeling Grid specifically designed for climate simulation models.
• Offers daily temporal resolution with a consistent 16-day data aggregation window for temporal smoothing.
• Cross-platform presence on NASA data.gov and EarthData indicates established importance and curation.

Limitations

• Metadata completeness is medium; specific column names, row counts, and file sizes are not provided across sources.
• The dataset is a single parameter (isotropic) for a single spectral band; full BRDF analysis requires accessing multiple files from the product suite.
• Documentation for known issues is referenced but external, requiring users to consult a separate website.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Produced daily from NOAA-20 VIIRS satellite observations using a defined BRDF/albedo algorithm.

Time Range

Daily production suggests a continuous time series, but specific start date is not provided.

Freshness

2026-04-09 21:07:08.003148

Geography

Global