VNP43D87: VIIRS Nadir-Adjusted Reflectance for Band M10

NASA/NOAA Suomi NPP VIIRS VNP43D87 provides Nadir BRDF-Adjusted Reflectance (NBAR) for the M10 band (1.61 μm). The dataset is produced daily using a 16-day temporal window and is weighted to the ninth day, at a 30 arc-second (1,000 meter) resolution on a global Climate Modeling Grid. NBAR values model reflectance as if collected from a nadir view at local solar noon, removing view angle effects.

Use Cases

• Climate simulation modeling based on the global Climate Modeling Grid (CMG) coverage.
• Monitoring land surface reflectance changes using the daily, nadir-adjusted NBAR values.
• Analyzing surface radiative properties in the 1.61 μm spectral band for vegetation or snow studies.
• Assessing albedo and anisotropy for Earth system models using the BRDF-adjusted reflectance.

Strengths

• Provides global coverage on a Climate Modeling Grid designed for climate simulations.
• Offers daily temporal resolution using a 16-day data window, temporally weighted to the ninth day.
• Includes improvements such as a better calibration algorithm and corrected geolocation accuracy.

Limitations

• Each file contains only one data layer due to large file size, limiting simultaneous multi-band analysis.
• Metadata completeness is medium; specific column names and row counts are not provided.
• Known issues exist, requiring users to consult an external assessment website.

Provenance

Source

NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) Visible Infrared Imaging Radiometer Suite (VIIRS).

Collection Method

Produced daily using the NBAR algorithm applied to VIIRS data.

Time Range

Daily production suggests a continuous time series; specific start date is not provided.

Freshness

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

Geography

Global.