MCD43D39: Daily Global BRDF/Albedo Quality Data for Climate Models

Global daily data at 30 arc second (approximately 1,000 meter) resolution, produced by NASA using 16 days of Terra and Aqua MODIS observations. The MCD43D39 Version 6.1 product provides quality information for valid observations in MODIS band 7, temporally weighted to the ninth day of the retrieval period. This dataset is designed for use in climate simulation models.

Use Cases

• Filtering high-quality albedo retrievals based on the band-specific quality flags described in the user guide.
• Assessing observation coverage and reliability for MODIS band 7 over a 16-day composite period.
• Supporting climate model validation and input by providing globally consistent, quality-annotated surface radiative property data.

Strengths

• Global spatial coverage at a consistent 30 arc second resolution.
• Daily production using a 16-day composite of data from two satellite platforms (Terra and Aqua MODIS).
• Version 6.1 incorporates specific calibration improvements, including RVS, optical crosstalk, and polarization corrections.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset contains just one data layer per file, which may limit immediate multi-band analysis.
• Row count is unknown, which may limit suitability assessment.

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

Freshness

Last updated 2026-03-12 23:23:41.664474; freshness should be verified.

Geography

Global