VIIRS/JPSS2 Surface Reflectance: 8-Day Global Land Imagery at 500m

A global 8-day composite land surface reflectance product from the NOAA-21 VIIRS sensor. The data provides corrected estimates for three imagery bands at a nominal 500-meter resolution, with each pixel representing the best quality observation selected over an 8-day period. The product is generated by LPCLOUD from NASA Earthdata.

Use Cases

• Monitor vegetation health and land cover changes based on corrected surface reflectance bands.
• Analyze seasonal and inter-annual land surface dynamics based on the 8-day composite temporal resolution.
• Assess atmospheric correction performance based on the quality assurance layers included.
• Model surface energy balance or albedo based on the three corrected imagery bands.

Strengths

• Data is atmospherically corrected for gases, water vapor, and aerosols.
• Pixel selection uses criteria for high coverage, low sensor angle, and absence of clouds.
• Includes a state quality assurance layer and a reflectance band quality layer.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Row count and file size are unknown, which may limit suitability assessment.
• Known issues exist and require consultation of an external website for full details.

Provenance

Source

NASA Earthdata (LPCLOUD)

Collection Method

Derived from NOAA-21 VIIRS sensor Level 2G observations, resampled to 500m and composited over 8-day periods.

Time Range

Temporal coverage, or null.

Freshness

Update frequency or recency, or null.

Geography

Global