VNP43D25: VIIRS BRDF Isotropic Parameter for Band M11

VNP43D25 provides the Bidirectional Reflectance Distribution Function (BRDF) isotropic parameter for the VIIRS band M11 at a 2.25 μm wavelength. This daily, global product is generated at a 30 arc-second (1,000 meter) resolution on a Climate Modeling Grid, using a 16-day data window weighted to the ninth day. The isotropic parameter is one of three model parameters used to derive surface albedo and reflectance anisotropy for climate and land surface studies.

Use Cases

• Modeling surface albedo for climate simulations based on the BRDF model parameters.
• Analyzing land surface anisotropy and reflectance properties using the isotropic parameter for the 2.25 μm band.
• Integrating daily, global land surface data into climate modeling grids for temporal trend analysis.
• Correcting satellite-derived reflectance values for angular effects using the BRDF parameters.

Strengths

• Provides global coverage on a Climate Modeling Grid suitable for climate simulation models.
• Offers daily temporal resolution, synthesized from a 16-day observation window to reduce noise.
• Delivers data at a consistent 30 arc-second (approximately 1 km) spatial resolution.

Limitations

• This Version 1 product was officially decommissioned on July 31, 2025, limiting its use for current analyses.
• Metadata on dataset size, row count, and specific column structure is unavailable across all sources.
• The product is noted to be affected by an abnormally high activation of an aerosol flag in upstream data, reducing usable observations.

Provenance

Source

National Aeronautics and Space Administration (NASA) / NOAA Suomi NPP satellite.

Collection Method

Derived from Visible Infrared Imaging Radiometer Suite (VIIRS) observations, processed using BRDF/albedo modeling.

Freshness

Last updated metadata indicates 2026-04-09, but the data product itself is decommissioned.

Geography

Global