VJ143D04: VIIRS BRDF Isotropic Parameter for Band M2

Global daily satellite-derived data provides the isotropic parameter for the Bidirectional Reflectance Distribution Function (BRDF) and albedo model for VIIRS band M2 (0.445 μm). The product is generated daily using a 16-day temporal composite at a 30 arc-second (1,000 meter) resolution, weighted to the ninth day, and formatted on a Climate Modeling Grid (CMG) for climate simulation models. This single-layer file is part of a larger suite of 39 files covering three model parameters across multiple spectral bands.

Use Cases

• Modeling surface albedo for climate simulations based on the Climate Modeling Grid (CMG) format.
• Analyzing land surface anisotropy and reflectance changes over time using the 16-day composite data.
• Deriving BRDF/Albedo values for the blue spectral band (M2) by combining the isotropic parameter with volumetric and geometric parameters.

Strengths

• Provides global coverage on a Climate Modeling Grid (CMG) designed for climate models.
• Offers daily temporal resolution using a 16-day composite to reduce noise.
• Includes improvements from the S-NPP VIIRS V002 algorithm, such as better calibration coefficients and geolocation accuracy.

Limitations

• Column names and exact data structure are not provided in any source.
• Each product file contains only one data layer, requiring multiple files for a complete analysis.
• Known issues exist, requiring users to consult an external website for complete details.

Provenance

Source

LPCLOUD (NASA Earthdata), NOAA-20 VIIRS instrument.

Collection Method

Satellite remote sensing data processed through a BRDF/albedo modeling algorithm.

Time Range

Daily production.

Freshness

Last updated on 2026-04-09 according to two platforms.

Geography

Global.