Daily MODIS BRDF Albedo Quality Flags for Climate Modeling

16 days of Terra and Aqua MODIS data are combined daily to produce a global Bidirectional Reflectance Distribution Function and Albedo quality layer at 30 arc-second resolution. The LPCLOUD organization generates this Climate Modeling Grid product, with data temporally weighted to the ninth day of the retrieval period.

Use Cases

• Filtering MCD43D albedo retrievals using the band 2 valid observation quality layer to isolate high-quality full inversion results.
• Analyzing temporal consistency of MODIS band 2 observations across the 16-day retrieval period represented in the quality layer.
• Assessing data quality for climate simulation inputs over specific geographic regions using the global 30 arc-second grid.

Strengths

• Daily global coverage at a consistent 30 arc-second (approximately 1 km) resolution.
• Integrates observations from two satellite platforms, Terra and Aqua MODIS, over a 16-day window.

Limitations

• Each product file contains only one data layer, limiting immediate multi-band analysis.
• Known issues exist, requiring users to consult external quality assessment resources.

Provenance

Source

LPCLOUD from NASA Terra and Aqua MODIS instruments.

Collection Method

Produced daily using 16 days of MODIS data, temporally weighted to the ninth day.

Freshness

Daily

Geography

Global