VJ143D19: VIIRS BRDF Isotropic Parameter for Band M8

Daily global data layers are produced using a 16-day rolling window, temporally weighted to the ninth day. The dataset provides the isotropic model parameter for the VIIRS band M8 (1.240 μm) at 30 arc-second (1,000 meter) resolution on a Climate Modeling Grid. This parameter is used in conjunction with volumetric and geometric parameters to derive Bidirectional Reflectance Distribution Function (BRDF) and albedo values for climate and land surface studies.

Use Cases

• Deriving surface albedo for climate models based on the three BRDF model parameters.
• Analyzing temporal changes in land surface reflectance anisotropy using daily, globally gridded data.
• Inputting pre-processed BRDF parameters into radiative transfer models for atmospheric correction.
• Studying surface properties in the 1.240 μm spectral band for vegetation or soil moisture applications.

Strengths

• Provides global coverage on a Climate Modeling Grid (CMG) designed for direct use in simulation models.
• Offers daily temporal resolution, synthesized from a 16-day data window to reduce noise.
• Part of a consistent product suite (VJ143D01-VJ143D39) covering multiple VIIRS bands and the Day/Night Band.

Limitations

• Each file contains only one data layer, requiring multiple files for a complete BRDF parameter set.
• Metadata completeness is inconsistent across platforms, with missing column definitions and conflicting license/author information.
• Known data quality issues exist, requiring users to consult external assessment websites.

Provenance

Source

NOAA-20 VIIRS satellite sensor, processed by LPCLOUD.

Collection Method

Satellite remote sensing data processed through a BRDF/Albedo algorithm, with methodology detailed in an Algorithm Theoretical Basis Document (ATBD).

Time Range

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

Freshness

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

Geography

Global.