VJ143D20: NOAA-20 VIIRS BRDF Volumetric Parameter for Band M8

Daily VJ143D20 files contain a single volumetric BRDF model parameter for VIIRS band M8 (1.240 μm), synthesized from 16 days of observations at 1,000-meter resolution. This product is part of a global Climate Modeling Grid suite designed for simulating surface reflectance and albedo in climate models. The data are temporally weighted to the ninth day of the 16-day aggregation period.

Use Cases

• Deriving surface albedo for VIIRS band M8 based on volumetric, isotropic, and geometric BRDF parameters.
• Inputting daily, globally-complete land surface reflectance data into climate simulation models.
• Analyzing temporal changes in surface anisotropy using a 16-day rolling composite weighted to a central day.
• Studying near-infrared (1.240 μm) land surface properties at a consistent 30 arc-second scale.

Strengths

• Provides a daily, global product at 30 arc-second (1,000 meter) resolution.
• Integrates 16 days of data to improve signal quality, with temporal weighting to the ninth day.
• Cross-platform presence on NASA Earthdata and Data.gov indicates established importance and accessibility.

Limitations

• Each file contains only one data layer, requiring multiple files for full BRDF analysis.
• Column names and exact data structure are not provided in the available metadata.
• Known issues exist, requiring users to consult an external quality assessment website.

Provenance

Source

LPCLOUD (NASA Earthdata)

Collection Method

Produced daily from NOAA-20 VIIRS satellite observations.

Freshness

2026-04-09 21:06:34.624547

Geography

Global coverage (Climate Modeling Grid)