NOAA-19 AVHRR: Daily Global Surface Reflectance at 0.05 Degree Resolution

A daily global land surface climate data record produced by NASA's Long-Term Data Record project. The dataset provides atmospherically corrected surface reflectance from the NOAA-19 Advanced Very High Resolution Radiometer, bridging data from multiple polar-orbiting satellite missions. It includes reflectance for three bands, quality flags, solar/view angles, and thermal data, formatted in HDF4.

Use Cases

• Monitoring long-term vegetation health and trends based on the derived NDVI and LAI/fPAR products.
• Studying global climate change impacts on land surfaces using the fundamental climate data record.
• Calibrating and validating models with atmospherically corrected surface reflectance data.
• Analyzing surface radiative properties using the provided solar zenith, view zenith, and relative azimuth angles.

Strengths

• Part of a validated Long-Term Data Record (LTDR) critical for climate change studies.
• Bridges data from eight AVHRR missions, MODIS, and VIIRS, providing continuity.
• Includes multiple derived products: surface reflectance, NDVI, and an experimental LAI/fPAR.

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.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

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

Time Range

Daily product; specific temporal coverage is not detailed.

Freshness

Last updated 2026-03-12 23:17:54.242993; freshness should be verified.

Geography

Global coverage at 0.05 degree resolution.