VJ143MA2: VIIRS BRDF/Albedo Quality Daily Global 1km Grid

NOAA-20 VIIRS VJ143MA2 Version 2 provides daily Bidirectional Reflectance Distribution Function and albedo quality data at 1-kilometer resolution, synthesized from a 16-day observation window. It uses the RossThick/Li-Sparse-Reciprocal kernel-driven model to correct directional reflectance and compute black-sky and white-sky albedo, supporting continuity with NASA's MODIS BRDF/Albedo product suite. The dataset includes 23 Science Dataset layers covering band quality, observation days, land/water flags, snow class, and uncertainty metrics.

Use Cases

• Correcting directional reflectance to a common view geometry based on the RTLSR BRDF model parameters.
• Estimating black-sky albedo at any solar illumination angle using the provided BRDF model parameters with a polynomial.
• Calculating instantaneous actual albedo (blue-sky albedo) using the black-sky and white-sky albedo SDS layers.
• Assessing data quality for specific VIIRS moderate resolution bands (M1-M5, M7-M8, M10-M11) via the band quality and days of valid observation layers.
• Classifying land surface conditions using the land water type class flag and snow BRDF albedo class flag.

Strengths

• Provides daily global coverage at a consistent 1-kilometer spatial resolution.
• Includes 23 distinct Science Dataset layers, offering detailed quality and ancillary information.
• Designed for continuity with the established NASA MODIS BRDF/Albedo product suite, ensuring long-term data compatibility.

Limitations

• Specific column names and dataset size (rows, file size) are not provided across any source.
• The temporal weighting to the ninth day within a 16-day window may introduce representativeness limitations for rapidly changing surfaces.
• Metadata for license, author, and organization is incomplete or conflicting across platforms.

Provenance

Source

NOAA-20 Visible Infrared Imaging Radiometer Suite (VIIRS)

Collection Method

Produced daily using 16 days of VIIRS data, processed with the RossThick/Li-Sparse-Reciprocal (RTLSR) semi-empirical kernel-driven BRDF model.

Freshness

2026-04-09 21:06:11.367317

Geography

Global