NOAA-14 AVHRR: Daily Global Top-of-Atmosphere Reflectance at 0.05 Degree Resolution

NOAA-14 AVHRR Top-of-Atmosphere Reflectance Daily L3 Global 0.05 Deg. CMG is a satellite-derived data product from the Long-Term Data Record project. The National Aeronautics and Space Administration produces this dataset to support global climate change studies by bridging data from multiple polar-orbiting satellite missions. It includes daily surface reflectance, NDVI, and experimental LAI/fPAR products, generated from GIMMS Advanced Processing System BRDF-corrected data.

Use Cases

• Modeling long-term climate change impacts based on daily surface reflectance data.
• Monitoring global vegetation health and phenology based on the Normalized Differential Vegetation Index (NDVI).
• Studying surface radiative properties and atmospheric interactions based on top-of-atmosphere reflectance for bands 1 and 2.
• Analyzing land surface energy balance based on included thermal data from bands 3, 4, and 5.

Strengths

• Part of the Long-Term Data Record (LTDR) project, which serves as a bridge connecting data from eight distinct AVHRR missions and MODIS/VIIRS sensors.
• Includes multiple derived products such as daily surface reflectance, NDVI, and an experimental Leaf-Area Index/fPAR product.
• Provides global 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 for large-scale ML projects.
• The LAI/fPAR product is described as experimental, which may affect its reliability for certain analyses.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Generated from GIMMS Advanced Processing System (GAPS) BRDF-corrected Surface Reflectance product (AVH01C1).

Time Range

null

Freshness

Last updated 2026-03-12 23:17:18.738999; freshness should be verified.

Geography

Global