VNP43D80: VIIRS Nadir BRDF-Adjusted Reflectance for Band M1

VNP43D80 Version 1 is a decommissioned NASA/NOAA Suomi NPP satellite data product providing daily Nadir BRDF-Adjusted Reflectance (NBAR) for the VIIRS M1 band at 0.412 μm. It is generated from a 16-day rolling window of observations, temporally weighted to the ninth day, and projected onto a global 30-arc-second Climate Modeling Grid. The NBAR algorithm corrects for view-angle effects to model surface reflectance as if observed from directly overhead at local solar noon.

Use Cases

• Modeling surface albedo for climate simulations based on the global Climate Modeling Grid (CMG) format.
• Analyzing temporal trends in land surface reflectance using the daily, 16-day composite data.
• Studying aerosol impacts on surface anisotropy characterization, as noted in the product's known issues.

Strengths

• Provides global spatial coverage on a standardized Climate Modeling Grid suitable for climate models.
• Offers a specific, atmospherically and geometrically corrected reflectance product for the VIIRS M1 band (0.412 μm).
• Data is produced daily using a consistent 16-day temporal compositing method.

Limitations

• This Version 1 product was officially decommissioned on July 31, 2025, and users are directed to newer versions.
• Metadata on dataset size, row count, and specific column structure is unavailable across all sources.
• The product has a known issue where an upstream aerosol flag reduces the number of acceptable observations used in the BRDF algorithm.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Satellite remote sensing data from the Suomi NPP Visible Infrared Imaging Radiometer Suite (VIIRS), processed through the NBAR algorithm.

Freshness

Last updated metadata indicates 2026-04-09, but the product itself is decommissioned.

Geography

Global