VJ143D82: VIIRS Nadir BRDF-Adjusted Reflectance for Band M3

NOAA-20 VIIRS VJ143D82 provides daily, global Nadir BRDF-Adjusted Reflectance (NBAR) for the 0.488 μm (blue) spectral band at a 1-kilometer resolution. The product uses a 16-day data composite, temporally weighted to the ninth day, and is formatted on a Climate Modeling Grid for climate simulation. NBAR values model surface reflectance as if observed from directly overhead at local solar noon, removing view-angle effects.

Use Cases

• Modeling surface albedo for climate simulations based on the Climate Modeling Grid (CMG) format.
• Analyzing temporal trends in blue-band surface reflectance using the daily, 16-day composite product.
• Studying land surface anisotropy and BRDF effects by comparing NBAR values to directional reflectances.
• Integrating VIIRS moderate resolution band M3 data with other spectral bands from the VJ143D product suite.

Strengths

• Provides global coverage on a Climate Modeling Grid designed for climate simulation models.
• Offers daily temporal resolution using a 16-day composite to reduce noise and cloud cover.
• Includes algorithmic improvements from version V002, such as enhanced calibration and geolocation accuracy.

Limitations

• Metadata for row count, file size, and specific columns is not provided across any source.
• Each product file contains only a single data layer due to large file sizes, requiring multiple files for multi-band analysis.
• Known issues exist and require external consultation of the MODIS/VIIRS Land Quality Assessment website.

Provenance

Source

NOAA-20 satellite's Visible Infrared Imaging Radiometer Suite (VIIRS), processed by LPCLOUD.

Collection Method

Satellite remote sensing data processed through the NBAR algorithm to adjust for bidirectional reflectance distribution.

Time Range

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

Freshness

Last updated on 2026-04-09 according to nasa_earthdata and datagov.

Geography

Global coverage.