MCD19A1CMGO: Daily Global Surface Reflectance from MODIS MAIAC at 0.05° Resolution

Global daily surface reflectance data from the combined MODIS Terra and Aqua satellites, processed using the Multi-Angle Implementation of Atmospheric Correction (MAIAC) algorithm. The National Aeronautics and Space Administration produces this Level 3 product on a 0.05-degree Climate Modeling Grid, providing atmospherically corrected reflectance for bands 8-12. It includes Bidirectional Reflectance Factor (BRF), normalized BRF, and Nadir BRDF-Adjusted Reflectance (NBAR) layers.

Use Cases

• Monitoring land surface changes based on daily, atmospherically corrected surface reflectance.
• Analyzing surface radiative properties for climate modeling based on the Bidirectional Reflectance Factor (BRF) and NBAR layers.
• Studying aerosol and atmospheric gas impacts on satellite observations based on the MAIAC correction algorithm.
• Developing time-series analyses of vegetation or land cover based on the daily global grid.

Strengths

• Atmospheric correction applied using the MAIAC algorithm, which is based on time series and pixel/image-based processing.
• Provides multiple reflectance measures: BRF, geometry-normalized BRF, and Nadir BRDF-Adjusted Reflectance (NBAR).
• Combined data from both MODIS Terra and Aqua satellites for daily global coverage.
• Data is structured on a consistent 0.05-degree (approx. 5.6 km) Climate Modeling Grid.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Known issues are documented in a separate user guide and website, requiring additional review.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Satellite data from MODIS Terra and Aqua sensors, processed with the MAIAC atmospheric correction algorithm.

Time Range

Daily production.

Freshness

Last updated 2026-03-12 23:21:28.996437; freshness should be verified.

Geography

Global coverage on a 0.05-degree grid.