VNP43D19: VIIRS BRDF Isotropic Parameter for Band M8

NASA/NOAA's VNP43D19 product provides the Bidirectional Reflectance Distribution Function (BRDF) isotropic parameter for the VIIRS satellite's M8 band (1.240 μm). It is produced daily at 30 arc-second (1,000 meter) resolution using a 16-day temporal window weighted to the ninth day, formatted for global Climate Modeling Grids (CMG). This parameter, alongside volumetric and geometric parameters, is used to derive BRDF and albedo values for the M8 band in climate simulation models.

Use Cases

• Deriving surface albedo for VIIRS band M8 based on the isotropic BRDF model parameter.
• Inputting land surface reflectance anisotropy data into global climate simulation models.
• Analyzing temporal changes in surface radiative properties using daily, 16-day composite data.
• Studying the impact of calibration and geolocation improvements on BRDF parameter accuracy.

Strengths

• Provides a specific model parameter (isotropic) for a defined spectral band (M8 at 1.240 μm).
• Offers daily production with a consistent 16-day temporal composite and 1,000-meter spatial resolution.
• Covers the entire globe in a Climate Modeling Grid (CMG) format designed for climate models.
• Includes improvements such as a better calibration algorithm and updated geolocation accuracy for the entire Suomi NPP mission.

Limitations

• Column names are unknown across all platform entries, limiting detailed feature understanding.
• Each large file contains only one data layer, which may complicate multi-parameter analysis.
• Known issues exist, requiring users to consult an external website for complete information.

Provenance

Source

NASA/NOAA Suomi NPP VIIRS instrument

Collection Method

Derived from satellite observations using a BRDF/albedo modeling algorithm.

Time Range

Daily production using a 16-day data window; covers the entire Suomi NPP mission.

Freshness

2026-04-09 20:53:44.296307

Geography

Global