VJ143D34: BRDF Isotropic Parameter for VIIRS Shortwave

NOAA-20 VIIRS provides daily BRDF isotropic parameter data for the shortwave broadband (1.61 μm) at a 30 arc-second (1,000 meter) resolution. Each product file contains a single data layer from a global Climate Modeling Grid, synthesized from 16 days of observations weighted to the ninth day. This parameter, alongside volumetric and geometric components, is used to derive surface albedo and reflectance anisotropy for climate simulation models.

Use Cases

• Climate model initialization based on global shortwave albedo parameters.
• Land surface anisotropy analysis using the isotropic, volumetric, and geometric BRDF model parameters.
• Surface radiative property trend monitoring based on daily, temporally-weighted global data.
• Algorithm validation and comparison referencing the documented methodology and known issues.

Strengths

• Provides data at a consistent 30 arc-second (1,000 meter) resolution for the entire globe.
• Incorporates improvements from previous versions, including enhanced calibration and geolocation accuracy.
• Data is produced daily using a 16-day synthesis window, offering a temporally smoothed product.

Limitations

• Column names and specific data structure are not provided in any source description.
• Each large file contains only one data layer, which may complicate multi-parameter analysis.
• Known issues exist, requiring users to consult an external assessment website for complete details.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Produced from NOAA-20 Visible Infrared Imaging Radiometer Suite (VIIRS) sensor data.

Freshness

2026-04-09 20:50:10.954751

Geography

Global