NOAA-11 AVHRR: Daily Global Top-of-Atmosphere Reflectance at 0.05 Degree Resolution

NOAA-11 AVHRR Top-of-Atmosphere Reflectance Daily L3 Global 0.05 Deg. CMG is a satellite-derived climate data record produced by NASA's Long-Term Data Record (LTDR) project. The dataset includes top-of-atmosphere reflectance for bands 1 and 2, quality flags, solar and view angles, thermal data, and scan time. It serves as a bridge connecting data from multiple polar-orbiting satellite missions for long-term climate studies.

Use Cases

• Studying global climate change trends based on long-term satellite reflectance data.
• Monitoring vegetation dynamics using derived indices like NDVI and LAI/fPAR.
• Analyzing surface radiative properties and atmospheric radiation based on reflectance bands and angles.
• Calibrating and validating models for land surface processes using quality-flagged satellite observations.

Strengths

• Part of a validated Long-Term Data Record (LTDR) critical for climate change studies.
• Integrates data from eight distinct AVHRR missions, including NOAA-11.
• Includes multiple data layers: reflectance, quality flags, angles, and thermal data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

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

Time Range

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Freshness

Last updated 2026-03-12 23:17:54.389110; freshness should be verified.

Geography

Global