VIIRS Near-Real-Time Surface Reflectance Swath Data

VJ109_NRT provides atmospherically corrected surface reflectance estimates from the Suomi-NPP VIIRS instrument across 11 reflective bands. Each Level-2 product contains approximately six minutes of swath data at 375-meter and 750-meter resolutions, processed for daytime land conditions. NASA produces this near-real-time data, with metadata indicating updates as recent as March 2026.

Use Cases

• Monitoring vegetation health and calculating indices like NDVI using surface reflectance from bands I1, I2, I3, M5, M7, and M10.
• Analyzing land surface changes by comparing atmospherically corrected reflectance values across time, corrected for aerosols and gases.
• Assessing surface radiative properties for climate models using pixel-level reflectance data from moderate and imagery resolution bands.
• Inputting corrected surface reflectance into algorithms for land cover classification or fire detection.

Strengths

• Data is atmospherically corrected for molecular gases and aerosols, improving accuracy for surface studies.
• Provides dual spatial resolutions (375m and 750m) across 11 spectral bands (I1-I3, M1-M5, M7, M8, M10, M11).
• Processed in near-real-time, supporting timely analysis of land surface conditions.

Limitations

• Coverage is limited to daytime land conditions; data is not produced for night or ocean pixels.
• Key metrics like total row count, file size, and specific temporal coverage are not provided across sources.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Satellite remote sensing data from the Suomi-NPP Visible Infrared Imager Radiometer Suite (VIIRS), processed with atmospheric correction algorithms using reanalysis data.

Time Range

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Freshness

2026-03-12 20:23:22.752173

Geography

Global land coverage from VIIRS swath observations.