MODIS/Aqua Surface Reflectance Daily L3 Global 0.05Deg CMG

MODIS/Aqua Surface Reflectance Daily L3 Global 0.05Deg CMG is a NASA near real-time product providing daily, atmospherically corrected surface reflectance estimates. The data is gridded on a 0.05-degree (approximately 5600-meter) geographic projection and includes spectral reflectance for seven bands, brightness temperatures, and auxiliary angles. It serves as a level-3 basis for generating higher-order land surface and climate products.

Use Cases

• Monitoring vegetation health and land cover change based on daily surface reflectance values for Bands 1-7.
• Analyzing surface thermal properties using brightness temperatures from Bands 20, 21, 31, and 32.
• Correcting for atmospheric and geometric effects in satellite imagery using provided solar/view zenith angles and ozone data.
• Generating cloud-free composite images by leveraging pixel selection based on low solar zenith angle and minimum blue band reflectance.

Strengths

• Provides daily, near real-time global coverage, enabling timely environmental monitoring.
• Includes a specific 0.05-degree (5600-meter) geographic grid resolution for consistent spatial analysis.
• Contains multiple science data sets, including surface reflectance, brightness temperatures, and geometric angles.

Limitations

• Key metadata such as row count, file size, and specific license terms are missing or conflicting across platforms.
• The dataset's provenance details, including the authoritative author and precise collection methodology, are not fully specified.
• Documentation is sparse, with column names and a complete data dictionary unavailable in the provided sources.

Provenance

Source

LANCEMODIS

Collection Method

Satellite remote sensing from the MODIS instrument aboard NASA's Aqua satellite.

Freshness

2026-04-10 00:52:06.243420

Geography

Global