MODIS/Aqua Surface Reflectance Daily Global Data at 5600m Resolution

MYD09CMG Version 6.1 provides daily global estimates of surface spectral reflectance from the Aqua MODIS satellite. The product includes 25 layers of corrected reflectance data, brightness temperature, and quality assurance bands, resampled to a 5600-meter Climate Modeling Grid. NASA produced this dataset, which was last updated on March 12, 2026.

Use Cases

• Calibrating climate simulation models based on the Climate Modeling Grid (CMG) format.
• Monitoring global land surface properties based on daily surface reflectance estimates.
• Assessing atmospheric correction performance based on data corrected for gasses, aerosols, and Rayleigh scattering.
• Analyzing long-term surface radiative trends based on the multi-band spectral reflectance data.

Strengths

• Data is corrected for atmospheric conditions including gasses, aerosols, and Rayleigh scattering.
• Product contains 25 layers, including 7 reflectance bands, 4 thermal brightness temperature bands, and quality assurance data.
• Version 6.1 includes specific calibration improvements, such as a polarization correction to Reflective Solar Bands.

Limitations

• A known striping anomaly in Band 5 affects data accuracy throughout the Aqua MODIS mission.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and total dataset size are unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Satellite observations from the Aqua Moderate Resolution Imaging Spectroradiometer (MODIS), processed and corrected.

Time Range

Daily coverage; specific date range is not provided.

Freshness

Last updated 2026-03-12 23:46:36.266753; freshness should be verified.

Geography

Global