VJ143D88: VIIRS Nadir BRDF-Adjusted Reflectance for Band M11

Daily global Nadir BRDF-Adjusted Reflectance (NBAR) values for the VIIRS band M11 (2.25 μm) are produced using 16 days of data at a 1,000-meter resolution. The algorithm removes view angle effects to model reflectance as if collected from a nadir view at local solar noon, and the data are formatted in a Climate Modeling Grid for global climate simulations. This product is part of a suite that includes NBAR for nine moderate resolution bands and the Day/Night Band.

Use Cases

• Climate model parameterization based on globally gridded surface reflectance data.
• Monitoring land surface albedo changes over time using daily, temporally weighted composites.
• Analyzing surface anisotropy and reflectance properties for the VIIRS M11 (2.25 μm) spectral band.
• Validating and improving BRDF/albedo algorithms using the nadir-adjusted reflectance values.

Strengths

• Provides a daily, global product at a consistent 1,000-meter (30 arc-second) resolution.
• Uses a 16-day composite window temporally weighted to the ninth day to improve data stability.
• Includes algorithmic improvements from the S-NPP VIIRS V002 version, such as better calibration coefficients and geolocation accuracy.

Limitations

• Each file contains only one data layer due to large file size, limiting simultaneous multi-band analysis.
• Known issues exist, requiring users to consult external MODIS/VIIRS Land Quality Assessment websites.
• Metadata for size, row count, and author is incomplete or conflicting across platforms.

Provenance

Source

NOAA-20 Visible Infrared Imaging Radiometer Suite (VIIRS)

Collection Method

Satellite remote sensing data processed through a Bidirectional Reflectance Distribution Function (BRDF) and Albedo NBAR algorithm.

Time Range

Daily production.

Freshness

2026-04-09 21:07:32.590964

Geography

Global coverage via a Climate Modeling Grid (CMG).