METOP-B AVHRR Daily Surface Reflectance: Global 0.05 Degree Grid

The METOP-B AVHRR Atmospherically Corrected Surface Reflectance Daily L3 Global 0.05 Deg CMG dataset is a fundamental climate data record produced by the Long-Term Data Record project. It provides daily, atmospherically and BRDF-corrected surface reflectance data from the MetOp-B satellite's AVHRR instrument, bridging data from multiple polar-orbiting missions. The product includes reflectance for bands 1, 2, and 3, quality flags, solar and view angles, and thermal data.

Use Cases

• Monitoring vegetation health and phenology based on daily Normalized Differential Vegetation Index (NDVI) data.
• Analyzing land surface radiative properties based on atmospherically corrected surface reflectance values.
• Studying climate change impacts on global land cover using long-term, multi-sensor bridged data.
• Modeling leaf-area index and fraction of absorbed photosynthetically active radiation based on the experimental LAI/fPAR thematic product.

Strengths

• Data is atmospherically and BRDF-corrected, which likely improves accuracy for surface analysis.
• Product bridges data from eight AVHRR missions and MODIS/VIIRS sensors, suggesting a long temporal continuity.
• Includes multiple data layers: surface reflectance for three bands, quality flags, angles, and thermal data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• LAI/fPAR product is described as experimental, indicating potential variability or lower confidence.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Generated from GIMMS Advanced Processing System (GAPS) BRDF-corrected Surface Reflectance product.

Freshness

Last updated 2026-03-13 00:21:26.285840; freshness should be verified.

Geography

Global