N09_AVH13C1: Daily Global Vegetation Index from NOAA-9 Satellite

NOAA-09 AVHRR Atmospherically Corrected Normalized Difference Vegetation Index Daily L3 Global 0.05 Deg. CMG is a satellite-derived data product. The National Aeronautics and Space Administration produces this daily global land surface climate data record as part of the Long-Term Data Record project. It bridges data from multiple polar-orbiting satellite missions to support climate change studies.

Use Cases

• Modeling climate change impacts on global vegetation based on daily NDVI data.
• Analyzing long-term land surface phenology trends based on the satellite-derived thematic climate data record.
• Calibrating or validating other satellite sensor data (e.g., MODIS, VIIRS) using the bridged Long-Term Data Record.
• Studying the fraction of absorbed photosynthetically active radiation (fPAR) for ecosystem productivity research.

Strengths

• Part of a critically important global climate data record for studying climate change.
• Bridges data from eight distinct AVHRR missions and connects to MODIS and VIIRS data streams.
• Provides daily thematic data products (NDVI and LAI/fPAR) at a 0.05-degree global resolution.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for specific analyses.
• Data may reflect temporal bias inherent to the specific NOAA-9 satellite mission period.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

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

Time Range

Covers the operational period of the NOAA-9 satellite mission.

Freshness

Last updated 2026-03-12 23:15:42.565748; freshness should be verified.

Geography

Global coverage at 0.05-degree resolution.