NOAA-19 AVHRR: Daily Global Top-of-Atmosphere Reflectance at 0.05 Degree Resolution

The NOAA-19 AVHRR Top-of-Atmosphere Reflectance Daily L3 Global 0.05 Deg. CMG dataset is part of the NASA-led Long-Term Data Record (LTDR) project. It provides daily global measurements from the NOAA-19 satellite's Advanced Very High Resolution Radiometer, including reflectance for bands 1 and 2, thermal data, quality flags, and solar/view angles. This dataset serves as a bridge connecting historical AVHRR data with newer MODIS and VIIRS missions for climate studies.

Use Cases

• Modeling land surface climate change based on the long-term, validated climate data record.
• Analyzing vegetation health and trends based on derived NDVI and LAI/fPAR products mentioned in the description.
• Studying surface radiative properties and atmospheric radiation using the top-of-atmosphere reflectance and thermal band data.
• Calibrating and validating newer satellite instruments by leveraging the bridge function between AVHRR, MODIS, and VIIRS data.

Strengths

• Part of a validated Long-Term Data Record (CDR) project critical for studying global climate change.
• Integrates data from eight distinct AVHRR missions, including NOAA-7 through NOAA-19 and MetOp-B.
• Provides daily global coverage at a 0.05-degree resolution.

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 (AVH01C1).

Time Range

Covers the operational period of the NOAA-19 satellite; specific date range is not provided.

Freshness

Last updated 2026-03-12 23:17:36.474717; freshness should be verified.

Geography

Global coverage.