MCD43D09: Daily Global BRDF Geometric Parameter for MODIS Band 3 at 1km Resolution

MCD43D09 Version 6.1 provides the geometric parameter for the Bidirectional Reflectance Distribution Function (BRDF) and Albedo model for MODIS band 3. The dataset is produced daily by NASA using 16 days of combined Terra and Aqua MODIS data at a 30 arc second (1,000 meter) resolution, temporally weighted to the ninth day. This Climate Modeling Grid product covers the entire globe for use in climate simulation models.

Use Cases

• Modeling surface albedo for climate simulations based on the BRDF parameters.
• Analyzing daily changes in land surface reflectance properties based on the geometric parameter for MODIS band 3.
• Integrating high-quality, full-inversion BRDF results into land surface models using the band-specific quality flags.
• Studying global surface radiative properties for climate research using the 1km resolution Climate Modeling Grid.

Strengths

• Produced daily using 16 days of combined Terra and Aqua MODIS data for temporal stability.
• Global coverage at a consistent 30 arc second (1,000 meter) resolution.
• Version 6.1 incorporates calibration improvements including RVS, crosstalk, and polarization corrections.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Each product file contains just one data layer, requiring multiple file downloads for a complete analysis.
• Data quality is dependent on user application of the band-specific quality flags as described in the guide.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Produced daily using 16 days of Terra and Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) data.

Time Range

Daily production; temporal weighting to the ninth day of a 16-day window.

Freshness

Last updated 2026-03-12 23:25:00.513493; freshness should be verified.

Geography

Global coverage.