VJ143D16: VIIRS BRDF Isotropic Parameter for Band M7

Daily 30 arc-second (1,000 meter) resolution data provides the isotropic model parameter for the VIIRS M7 band (0.865 μm) used to derive land surface albedo and anisotropy. This product is part of a 39-file suite covering nine moderate resolution bands, visible, NIR, shortwave, and the Day/Night Band, generated from a rolling 16-day composite weighted to the ninth day. It is formatted on a global Climate Modeling Grid for use in climate simulation models.

Use Cases

• Modeling land surface albedo for climate simulations based on the global Climate Modeling Grid (CMG) format.
• Analyzing temporal changes in surface reflectance anisotropy using the 16-day composite, temporally-weighted data.
• Deriving BRDF/Albedo values for the VIIRS M7 band by combining this isotropic parameter with volumetric and geometric parameters.
• Assessing surface radiative properties for the VIIRS Day/Night Band using the related parameters in the VJ143D product suite.

Strengths

• Provides global coverage at a consistent 30 arc-second (1,000 meter) spatial resolution.
• Incorporates algorithm improvements from the S-NPP VIIRS V002 version, including improved calibration and geolocation.
• Offers a long-term, daily time series product designed specifically for climate modeling applications.

Limitations

• Metadata completeness is low; specific column names, row counts, and file sizes are not provided on any platform.
• Each of the 39 product files contains only a single data layer, requiring multiple files for a complete analysis.
• Known issues exist and require referral to an external website for full documentation.

Provenance

Source

LPCLOUD (NASA Earthdata), derived from NOAA-20 VIIRS sensor data.

Collection Method

Satellite remote sensing, processed using a BRDF/Albedo model algorithm.

Time Range

Daily production using a rolling 16-day composite; specific start date not provided.

Freshness

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

Geography

Global coverage.