VNP43D22: VIIRS Band M10 BRDF Isotropic Parameter Daily Global Climate Grid

NASA/NOAA Suomi NPP VIIRS VNP43D22 Version 1 provided the Bidirectional Reflectance Distribution Function (BRDF) isotropic model parameter for satellite band M10 (1.61 μm). This daily product was generated using a 16-day rolling window of data at 30 arc-second (1,000 meter) resolution, temporally weighted to the ninth day and formatted on a global Climate Modeling Grid (CMG). The dataset was decommissioned on July 31, 2025, with users directed to the Version 2 data products.

Use Cases

• Modeling land surface albedo for climate simulations based on the BRDF isotropic parameter for the 1.61 μm spectral band.
• Analyzing temporal changes in surface reflectance anisotropy using daily, globally-complete Climate Modeling Grid data.
• Deriving full BRDF and albedo values for VIIRS band M10 in conjunction with the volumetric and geometric parameters from the VNP43D product suite.

Strengths

• Provides a single, focused data layer (the isotropic parameter) for a specific VIIRS band, simplifying integration for targeted analyses.
• Offers daily global coverage at a consistent 1-km resolution on a Climate Modeling Grid, designed for climate model ingestion.
• Cross-platform presence on NASA Earthdata and Data.gov signals its importance and former operational status.

Limitations

• The dataset is decommissioned (as of July 31, 2025), indicating it is an outdated version with known issues, such as impacts from high aerosol flag activation in upstream data.
• Critical metadata is missing or conflicting across sources: file size, row count, and author are unknown or listed as 'None'.
• Each file contains only one data layer, requiring users to combine multiple files (VNP43D01-D39) for a complete BRDF model parameter set.

Provenance

Source

NASA/NOAA Suomi NPP satellite, Visible Infrared Imaging Radiometer Suite (VIIRS), processed by LPCLOUD.

Collection Method

Produced daily using a 16-day data window, with methodology detailed in the VNP43MA1 Algorithm Theoretical Basis Document (ATBD).

Time Range

Daily production, but the specific date range of available data is not provided.

Freshness

2026-04-09 20:54:44.485174

Geography

Global coverage on a Climate Modeling Grid (CMG).