NOAA-11 AVHRR: Daily Global Vegetation Index at 0.05 Degree Resolution

NOAA-11 AVHRR Atmospherically Corrected Normalized Difference Vegetation Index (NDVI) Daily L3 Global 0.05 Deg. CMG is a thematic climate data record from NASA's Long-Term Data Record project. The product is generated from GIMMS Advanced Processing System BRDF-corrected Surface Reflectance and serves as a bridge connecting data from multiple polar-orbiting satellite missions. It is available in HDF4 file format.

Use Cases

• Monitoring global vegetation health and phenology based on daily NDVI values.
• Studying long-term climate change impacts on land cover based on the thematic climate data record.
• Calibrating and validating models using atmospherically corrected surface reflectance data.
• Analyzing spatial patterns of photosynthetic activity at a 0.05-degree resolution.

Strengths

• Data is atmospherically corrected and BRDF-corrected, which likely improves accuracy for surface reflectance.
• Part of a long-term record bridging data from eight AVHRR missions, MODIS, and VIIRS.
• Global daily coverage at a 0.05-degree spatial resolution.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect temporal and sensor-specific bias inherent to the NOAA-11 AVHRR mission.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Generated from GIMMS Advanced Processing System (GAPS) BRDF-corrected Surface Reflectance product derived from NOAA-11 AVHRR satellite data.

Time Range

null

Freshness

Last updated 2026-03 12 23:18:15.114599; freshness should be verified.

Geography

Global