MCD43D66: Daily Nadir BRDF-Adjusted Reflectance for MODIS Band 5 at 1km Resolution

MCD43D66 Version 6 is a daily, global dataset of Nadir BRDF-Adjusted Reflectance for MODIS band 5 at 30 arc second (1,000 meter) resolution, produced by NASA using 16 days of Terra and Aqua satellite observations. The data are temporally weighted to the ninth day of the 16-day period and are formatted for Climate Modeling Grids. This version was decommissioned on July 31, 2023, with users directed to the updated Version 6.1 product.

Use Cases

• Modeling surface albedo for climate simulations based on the daily, global 1km resolution data.
• Analyzing land surface reflectance properties using the nadir BRDF-adjusted reflectance algorithm described.
• Assessing data quality for scientific applications using the band-specific quality flags mentioned in the user guide.
• Studying temporal changes in surface reflectance with data weighted to a central ninth day.

Strengths

• Global coverage at 30 arc second (1km) resolution, suitable for climate modeling grids.
• Daily production using 16 days of observations from both Terra and Aqua MODIS sensors.
• Algorithm corrects for view angle effects to model values as if collected from nadir view at local solar noon.

Limitations

• Version 6 has known issues, particularly over arid bright surfaces, and has been decommissioned; users are urged to use Version 6.1.
• Each product file contains just one data layer due to large file size, limiting immediate multi-band analysis.
• Column-level documentation is absent; field semantics must be inferred after download.

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 data, temporally weighted to the ninth day of a 16-day period.

Freshness

Last updated 2026-03-12 23:46:39.526804; freshness should be verified as the specific version is deprecated.

Geography

Global coverage.