Global Daily BRDF Albedo Quality Valid Observations for MODIS Band 4

Global daily quality information for MODIS band 4 valid observations is produced from Terra and Aqua satellite data at 30 arc-second resolution. The LPCLOUD organization generates this dataset for climate simulation models, using a 16-day retrieval period weighted to the ninth day.

Use Cases

• Assessing data quality for MODIS band 4 albedo retrievals using the valid observation quality layer.
• Filtering high-quality full inversion results for climate models by applying band-specific quality flags.
• Analyzing temporal consistency of surface reflectance measurements across the 16-day retrieval period for band 4.

Strengths

• Provides data at a consistent 30 arc-second (1,000 meter) spatial resolution.
• Offers daily global coverage specifically designed for climate modeling grids.
• Integrates observations from both Terra and Aqua MODIS instruments over a 16-day period.

Limitations

• Each product file contains only one data layer, limiting immediate multi-band analysis.
• Known issues exist, requiring consultation of external quality assessment websites.
• The temporal weighting to a central day may not represent instantaneous conditions.

Provenance

Source

LPCLOUD

Collection Method

Produced daily from 16 days of Terra and Aqua MODIS data.

Freshness

Daily

Geography

Global