NOAA-07 AVHRR: Daily Global Top-of-Atmosphere Reflectance at 0.05 Degrees

NOAA-07 AVHRR Top-of-Atmosphere Reflectance Daily L3 Global 0.05 Deg. CMG is a climate data record produced by NASA's Long-Term Data Record project. It provides daily global surface reflectance data derived from the NOAA-7 satellite's Advanced Very High Resolution Radiometer, processed through the GIMMS Advanced Processing System. The dataset includes reflectance for bands 1 and 2, quality flags, solar and view angles, thermal data, and scan time, serving as a bridge between multiple polar-orbiting satellite missions.

Use Cases

• Monitoring global vegetation health based on derived NDVI and LAI/fPAR thematic products mentioned in the description
• Analyzing long-term land surface reflectance trends for climate change studies based on the daily time-series data
• Calibrating and validating models using the BRDF-corrected surface reflectance and associated quality flags
• Studying atmospheric radiation properties using the top-of-atmosphere reflectance and thermal band data

Strengths

• Part of a validated Long-Term Data Record (LTDR) project designed for global climate change studies
• Integrates data from eight distinct AVHRR missions, providing a multi-decade bridge between satellite sensors
• Includes multiple data layers: reflectance, quality flags, angles, and thermal data for comprehensive analysis

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count and dataset size are unknown, which may limit suitability assessment
• Data may reflect temporal and sensor-specific bias inherent to the NOAA-7 AVHRR mission

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Generated from GIMMS Advanced Processing System (GAPS) BRDF-corrected Surface Reflectance product (AVH01C1) from NOAA-7 AVHRR satellite

Time Range

Daily coverage, specific date range not provided

Freshness

Last updated 2026-03-12 23:18:19.692694; freshness should be verified

Geography

Global coverage at 0.05-degree resolution