VNP43DNBA4: Daily Nadir BRDF-Adjusted Reflectance from VIIRS

NASA/NOAA's Suomi NPP satellite provides daily 1-kilometer resolution Nadir BRDF-Adjusted Reflectance estimates using 16-day VIIRS data composites. The algorithm applies the RossThick/Li-Sparse-Reciprocal model to correct for view angle effects, producing stable reflectance and albedo values. This data product is part of a suite designed after the MODIS BRDF/Albedo system and has been succeeded by Version 2.

Use Cases

• Modeling land surface albedo for climate simulations using the integrated black-sky and white-sky albedo layers.
• Analyzing surface anisotropic effects and correcting directional reflectance to a common view geometry.
• Estimating instantaneous actual albedo (blue-sky albedo) by combining BSA and WSA Science Dataset layers.
• Monitoring daily changes in surface reflectance at a 1km global scale for environmental studies.

Strengths

• Provides a stable, consistent NBAR product by removing view angle effects from directional reflectances.
• Offers a 1-kilometer spatial resolution for detailed global land surface analysis.
• Based on a well-established algorithm suite designed after the MODIS BRDF/Albedo product.

Limitations

• The Version 1 product was decommissioned on July 31, 2025, limiting access to current data.
• Key metadata such as row count, file size, and specific column names are unavailable across all sources.
• Conflicting license information exists between platforms (other-license-specified vs. None).

Provenance

Source

National Aeronautics and Space Administration (NASA) / National Oceanic and Atmospheric Administration (NOAA) Suomi NPP satellite.

Collection Method

Produced daily using 16 days of VIIRS Day/Night Band data, weighted temporally to the ninth day.

Freshness

Last updated on 2026-04-09 according to datagov, but the dataset is decommissioned.

Geography

Global coverage at 1km resolution in a sinusoidal grid projection.