N11_AVH09C1: NOAA-11 AVHRR Daily Surface Reflectance at 0.05-Degree Resolution

NOAA-11 satellite data provides atmospherically corrected surface reflectance for bands 1, 2, and 3, forming part of the Long-Term Data Record (LTDR) critical for climate change studies. The National Aeronautics and Space Administration produces this daily, global product at a 0.05-degree resolution, bridging data from multiple polar-orbiting satellite missions. Files include data quality flags, solar/view angles, and thermal band data, available in HDF4 format.

Use Cases

• Calculate daily Normalized Differential Vegetation Index (NDVI) based on surface reflectance bands.
• Model long-term climate change impacts on land surfaces based on the multi-decadal LTDR bridge.
• Study vegetation health and Leaf-Area Index (LAI) based on the experimental LAI/fPAR product.
• Analyze surface radiative properties using the provided solar zenith, view zenith, and relative azimuth angles.
• Validate and compare land surface data across AVHRR, MODIS, and VIIRS satellite missions.

Strengths

• Part of a validated Long-Term Data Record (LTDR) designed for climate data record (CDR) generation.
• Integrates data from eight distinct AVHRR missions, including NOAA-7 through NOAA 19 and MetOp-B.
• Provides atmospherically and BRDF-corrected surface reflectance, which is a fundamental climate data record (FCDR).
• Includes ancillary data such as quality flags and geometric angles to support analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for specific modeling tasks.
• The LAI/fPAR product is described as experimental, indicating potential variability in validation.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Generated from GIMMS Advanced Processing System (GAPS) BRDF-corrected Surface Reflectance product (AVH01C1).

Time Range

Daily product; temporal coverage is implied by the NOAA-11 mission lifespan but not explicitly stated.

Freshness

Last updated 2026-03-12 23:18:24.751327; freshness should be verified.

Geography

Global coverage at 0.05-degree resolution.