Daily Global BRDF Albedo Quality Flags for Climate Modeling

Daily global data provides BRDF and albedo quality information at 30 arc-second (1,000 meter) resolution for climate simulation grids. The product is generated by LPCLOUD using 16 days of combined Terra and Aqua MODIS observations, temporally weighted to the ninth day of each collection period. It includes an overall pixel quality layer and individual quality layers for MODIS spectral bands 1 through 7.

Use Cases

• Filtering high-quality albedo retrievals using the BRDF quality layer for climate model input.
• Assessing data reliability for specific MODIS spectral bands via the individual band quality layers.
• Analyzing temporal consistency of surface reflectance by leveraging the daily, 16-day composited time series.
• Validating land surface models by comparing modeled albedo against quality-controlled satellite observations.

Strengths

• Daily temporal resolution supports analysis of short-term surface changes.
• Global spatial coverage at 30 arc-second resolution suitable for climate modeling grids.
• Provides quality flags for 7 distinct MODIS spectral bands to enable band-specific analysis.

Limitations

• Data resolution is coarse (1km), limiting analysis of fine-scale surface features.
• Each daily value is derived from a 16-day window, which may smooth rapid changes.
• Known issues exist, requiring consultation of external quality assessment resources.

Provenance

Source

LPCLOUD using Terra and Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) data.

Collection Method

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

Time Range

Daily coverage.

Freshness

Daily

Geography

Global.