VIIRS/JPSS2 Daily Surface Reflectance at 500m and 1km Global Resolution

Global daily land surface reflectance data from the NOAA-21 satellite's VIIRS sensor. The product provides estimates for twelve spectral bands at two spatial resolutions, corrected for atmospheric gases and aerosols. It is produced by LPCLOUD using inputs from the VIIRS sensor, cloud mask, aerosol product, and NCEP reanalysis data.

Use Cases

• Monitoring vegetation health and land cover change based on the twelve corrected reflectance bands.
• Modeling surface energy balance and albedo using the provided solar and sensor geometry angles.
• Assessing atmospheric correction algorithms by comparing the surface reflectance product with top-of-atmosphere inputs.
• Generating input layers for other VIIRS land products, as mentioned in the description.

Strengths

• Provides data at two distinct spatial resolutions: ~463 meters for three imagery bands and ~926 meters for nine moderate resolution bands.
• Includes twelve reflectance bands alongside quality flags and observation geometry layers (sensor and solar angles).
• Surface reflectance is corrected for atmospheric effects from gases and aerosols.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Known issues are documented on an external website, requiring additional research.

Provenance

Source

LPCLOUD via NASA Earthdata, using the NOAA-21 VIIRS sensor.

Collection Method

Derived through resampling and atmospheric correction of VIIRS Level 2 input products.

Time Range

Daily coverage; specific date range is unknown.

Freshness

Update frequency is unknown; freshness unverified.

Geography

Global coverage.