VIIRS Surface Reflectance with Atmospheric Correction

VNP09 data provides atmospherically corrected surface reflectance estimates from the VIIRS/NPP satellite across 12 reflective bands (I1-I3, M1-M5, M7, M8, M10, M11). Each swath contains approximately six minutes of daytime data, processed separately for 375-meter and 750-meter resolution pixels. This Level-2 product is produced by NASA for all land-based atmospheric conditions.

Use Cases

• Monitoring vegetation health and biomass using corrected reflectance in the red and near-infrared bands (e.g., M5, M7).
• Tracking land surface changes and urban expansion by analyzing multi-band reflectance time series at 375m resolution.
• Assessing aerosol optical depth and atmospheric composition by comparing top-of-atmosphere and surface-corrected reflectance.
• Calibrating and validating land surface models with pixel-level reflectance data from the moderate-resolution (750m) bands.

Strengths

• Provides data across 12 distinct spectral bands, enabling detailed multi-spectral analysis.
• Applies corrections for key atmospheric effects including ozone, water vapor, and aerosols.
• Offers high-resolution imagery at both 375-meter and 750-meter pixel scales.

Limitations

• Data is restricted to daytime conditions and excludes ocean and night-time observations.
• Specific row counts, file sizes, and detailed column names are not provided by any source.
• Sources conflict on license details, with some specifying 'other-license-specified' and others providing no information.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Satellite remote sensing from the VIIRS instrument aboard the Suomi NPP spacecraft, with atmospheric correction applied to top-of-atmosphere reflectance.

Time Range

Covers daytime overpasses from the Suomi NPP mission; specific start and end dates are not provided.

Freshness

2026-03-12 20:15:23.236917

Geography

Global land surface coverage under all atmospheric conditions except over oceans.