VJ143DNBA1: Daily VIIRS BRDF/Albedo Model Parameters

NOAA-20 VIIRS DNB BRDF/Albedo Model Parameters provide daily, 1-kilometer resolution data on how Earth's surface reflects light. The product uses a 16-day composite weighted to the ninth day and employs the RossThick/Li-Sparse-Reciprocal kernel-driven model to generate parameters for correcting directional reflectance and calculating black-sky and white-sky albedo. This dataset is part of a suite designed to ensure continuity with NASA's MODIS BRDF/Albedo products.

Use Cases

• Correcting directional reflectance to a common view geometry using the provided BRDF model parameters (fiso, fvol, fgeo).
• Estimating black-sky albedo at any solar illumination angle using the BRDF parameters with a simple polynomial.
• Calculating instantaneous actual (blue-sky) albedo by combining the provided black-sky and white-sky albedo Science Dataset variables.
• Monitoring land surface radiative properties over time using the daily, 1km resolution global data product.

Strengths

• Provides daily global coverage at 1-kilometer spatial resolution.
• Uses a sophisticated, semi-empirical kernel-driven BRDF model (RossThick/Li-Sparse-Reciprocal) to characterize surface anisotropy.
• Designed for continuity with the long-term NASA MODIS BRDF/Albedo data product suite.

Limitations

• Specific column names and dataset size/row counts are not provided in any source, limiting precise technical understanding.
• Known issues exist but are documented on an external website, requiring users to seek additional documentation.
• The dataset appears in multiple, slightly varying entries (VJ143DNBA1 and VJ143MA1), indicating potential confusion between specific sensor band products.

Provenance

Source

NOAA-20 Visible Infrared Imaging Radiometer Suite (VIIRS) satellite sensor.

Collection Method

Produced daily using a 16-day composite of VIIRS data, weighted temporally to the ninth day.

Freshness

2026-04-09

Geography

Global coverage.