VJ109: Atmospherically Corrected Surface Reflectance from JPSS-1 VIIRS

VJ109 is a Level-2 satellite product providing atmospherically corrected surface reflectance estimates from the JPSS-1 VIIRS instrument. It contains approximately six minutes of swath data across twelve reflective bands at dual spatial resolutions of 375 meters (I-bands) and 750 meters (M-bands). The product is generated for daytime land surfaces under all atmospheric conditions except for night and oceans.

Use Cases

• Monitoring vegetation health and phenology based on surface reflectance in visible and near-infrared bands.
• Assessing land surface albedo and radiative properties using atmospherically corrected reflectance values.
• Supporting land cover classification and change detection with multi-spectral, dual-resolution imagery.
• Validating atmospheric correction algorithms by comparing top-of-atmosphere and surface reflectance.

Strengths

• Provides data at two specific spatial resolutions: 375 meters for I-bands and 750 meters for M-bands.
• Includes atmospheric correction for specific gases (ozone, water vapor) and aerosols.
• Cross-platform presence on Data.gov and NASA EarthData indicates established importance and accessibility.

Limitations

• Metadata completeness is low: column names, row counts, and file sizes are unknown across all sources.
• The 'last updated' date of 2026-04 09 appears inconsistent, suggesting a potential metadata error.
• Spatial and temporal coverage is limited to daytime land conditions, excluding night and ocean data.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Derived from the Visible Infrared Imaging Radiometer Suite (VIIRS) sensor aboard the Joint Polar Satellite System-1 (JPSS-1).

Time Range

Contains approximately 6 minutes of data per swath.

Freshness

2026-04-09 21:08:55.956974 (Note: This future date may indicate a metadata error)

Geography

Global land coverage from orbital swaths.