MCD43D33: Daily Global BRDF/Albedo Quality Data for MODIS Band 1 at 1km Resolution

Daily global data produced using 16 days of Terra and Aqua MODIS observations, temporally weighted to the ninth day. The MCD43D33 Version 6.1 dataset provides valid observation quality information for MODIS band 1 at 30 arc second (1,000 meter) resolution, intended for use in climate simulation models. It is produced by the National Aeronautics and Space Administration (NASA) and was last updated in March 2026.

Use Cases

• Filtering high-quality full inversion results for land surface studies based on the band-specific quality flags described in the user guide.
• Assessing observation coverage and reliability for MODIS band 1 over a 16-day retrieval period based on the valid observation quality layer.
• Supporting climate model input and validation by providing daily, globally gridded quality information for surface radiative properties.
• Investigating temporal changes in surface reflectance quality by using the daily production and temporal weighting scheme.

Strengths

• Daily production with a 16-day observation window, providing frequent global coverage.
• Data is at a consistent 30 arc second (approximately 1km) Climate Modeling Grid (CMG) resolution.
• Version 6.1 incorporates specific calibration improvements, including RVS, crosstalk, and polarization corrections as noted in the description.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for specific computational needs.
• The description metadata is limited; actual data quality and known issues require manual inspection via the linked external resources.

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

Freshness

Last updated 2026-03-12 23:24:05.633137; freshness should be verified.

Geography

Global coverage on a Climate Modeling Grid (CMG).