VJ143D86: VIIRS Nadir BRDF-Adjusted Reflectance for Band M8

Daily global Nadir BRDF-Adjusted Reflectance (NBAR) data for the VIIRS M8 band (1.240 μm) is produced using a 16-day temporal composite at a 30 arc-second (1,000 meter) resolution. The product is part of the VJ143D BRDF/Albedo suite, designed for climate simulation models on a global Climate Modeling Grid. It corrects for view angle effects to model surface reflectance as if observed from nadir at local solar noon.

Use Cases

• Modeling land surface albedo for climate simulations based on the global Climate Modeling Grid (CMG).
• Analyzing temporal changes in surface reflectance using the daily, 16-day composite data product.
• Correcting for bidirectional reflectance effects in satellite imagery to standardize observations to a nadir view.
• Studying surface radiative properties in the 1.240 μm spectral band for vegetation or moisture-related research.

Strengths

• Provides global coverage on a Climate Modeling Grid, specifically designed for climate simulation models.
• Employs a sophisticated NBAR algorithm that removes view angle effects, standardizing reflectance values to a nadir view at solar noon.
• Includes algorithmic improvements from the S-NPP VIIRS V002 version, such as improved calibration and geolocation accuracy.

Limitations

• Metadata is incomplete; key details like row count, file size, and specific license terms are not provided across platforms.
• Each product file contains only a single data layer due to large file sizes, which may complicate multi-band analysis.
• Known issues exist and require external consultation of the MODIS/VIIRS Land Quality Assessment website for full details.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Processed from NOAA-20 Visible Infrared Imaging Radiometer Suite (VIIRS) satellite observations.

Time Range

Daily production using a 16-day data composite, temporally weighted to the ninth day.

Freshness

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

Geography

Global coverage.