MCD43D22: Daily Global BRDF Isotropic Parameter for Visible Broadband at 1km Resolution

MCD43D22 Version 6.1 is a NASA-produced dataset containing the Bidirectional Reflectance Distribution Function (BRDF) isotropic parameter for the visible broadband. It is generated daily at a 30 arc second (approximately 1,000 meter) global Climate Modeling Grid (CMG) resolution, using 16 days of combined Terra and Aqua MODIS satellite data. The data are temporally weighted to the ninth day of the 16-day period.

Use Cases

• Modeling surface reflectance anisotropy for climate simulations based on the BRDF parameters.
• Deriving broadband albedo values for the visible spectrum based on the isotropic, volumetric, and geometric parameters.
• Assessing land surface radiative properties over time based on the daily, globally gridded data.
• Filtering data quality for scientific applications based on the band-specific quality flags mentioned in the user guide.

Strengths

• Produced daily using data from two satellite platforms (Terra and Aqua MODIS), suggesting frequent temporal coverage.
• Covers the entire globe at a 1,000-meter resolution on a Climate Modeling Grid.
• Version 6.1 incorporates specific calibration improvements, including RVS, optical crosstalk, and polarization corrections.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Each product file contains just one data layer, which may complicate multi-band analysis.

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 period.

Freshness

Last updated 2026-03-12 23:25:32.061224; freshness should be verified.

Geography

Global coverage.