VNP43D23: VIIRS BRDF Volumetric Parameter for Band M10

VNP43D23 is a daily global geospatial dataset providing the volumetric parameter for the Bidirectional Reflectance Distribution Function (BRDF) and Albedo model for VIIRS band M10 (1.61 μm). It is produced using 16 days of data at a 30 arc-second (1,000 meter) resolution, temporally weighted to the ninth day, and formatted for a Climate Modeling Grid (CMG). This parameter, along with isotropic and geometric parameters, is used to derive surface reflectance and albedo values for climate simulation models.

Use Cases

• Deriving surface albedo for climate models based on the volumetric BRDF parameter.
• Analyzing land surface anisotropy and reflectance in the 1.61 μm spectral band.
• Inputting BRDF model parameters into land quality assessment workflows.
• Studying temporal changes in surface radiative properties using daily, globally-complete data.

Strengths

• Provides a single, globally-complete data layer on a Climate Modeling Grid suitable for direct use in simulations.
• Offers daily production with a 16-day data composite, providing a temporally smoothed product.
• Includes improvements from a previous version, such as a better calibration algorithm and corrected aerosol flags.

Limitations

• Metadata completeness is low: column names, row counts, and file sizes are unknown across all sources.
• The dataset has known issues, requiring users to consult an external website for complete information.
• Each VNP43D product contains just one data layer due to large file size, requiring multiple files for full analysis.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Produced from the Suomi NPP satellite's VIIRS instrument.

Time Range

Daily production.

Freshness

2026-04-09 20:42:26.271375

Geography

Global coverage.