VJ143D80: VIIRS Nadir BRDF-Adjusted Reflectance for Band M1

Daily global Nadir BRDF-Adjusted Reflectance (NBAR) data for the NOAA-20 VIIRS sensor's M1 band (0.412 μm) is produced at 30 arc-second (1,000 meter) resolution. The dataset uses a 16-day temporal composite weighted to the ninth day and is formatted on a Climate Modeling Grid for use in climate simulations. It is part of a product suite that provides NBAR values for nine moderate resolution bands and the Day/Night Band, with corrections applied for view angle effects.

Use Cases

• Climate model input based on the Climate Modeling Grid (CMG) format and corrected surface reflectance.
• Land surface change detection based on daily, nadir-adjusted reflectance values from a 16-day composite.
• Atmospheric aerosol studies based on the corrected aerosol quantity flag over bright surfaces.
• Algorithm validation based on the documented methodology and links to the Algorithm Theoretical Basis Document.

Strengths

• Provides daily, global coverage at a consistent 1,000-meter spatial resolution.
• Incorporates algorithm improvements from the S-NPP VIIRS V002 version, including better calibration and geolocation accuracy.
• Cross-platform presence on Data.gov and NASA Earthdata signals its importance and curation for the scientific community.

Limitations

• Metadata for row count, file size, and specific columns is missing or listed as 'unknown' across all sources.
• Each product file contains only one data layer, which may complicate multi-band analysis.
• The license is ambiguously listed as 'other-license-specified' without explicit terms.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Produced daily from NOAA-20 VIIRS sensor data using a BRDF/Albedo modeling algorithm.

Time Range

Daily production, using a rolling 16-day data composite.

Freshness

2026-04-09 21:07:45.615891

Geography

Global