MODIS Daily Black Sky Albedo for Visible Broadband

MCD43D49 Version 6.1 provides daily black-sky albedo for the visible broadband derived from Terra and Aqua MODIS data. The dataset is produced by LPCLOUD using a 16-day rolling window temporally weighted to the ninth day, at a 30 arc second (1,000 meter) resolution covering the entire globe.

Use Cases

• Model surface energy balance in climate simulations using the daily visible broadband black-sky albedo layer.
• Analyze temporal trends in surface reflectance by utilizing the daily temporal weighting and 16-day data aggregation window.
• Validate land surface models by comparing simulated albedo against the satellite-derived black-sky albedo measurements.
• Assess vegetation changes by correlating visible broadband albedo variations with seasonal cycles.
• Isolate high-quality data for specific applications by applying the band-specific quality flags described in the user guide.

Strengths

• Daily global coverage at 30 arc second (1,000 meter) resolution.
• Data incorporates 16 days of MODIS observations from both Terra and Aqua satellites for each daily product.
• Product suite includes 10 distinct black-sky albedo layers for different spectral bands.

Limitations

• Each product file contains only one data layer, requiring multiple files for multi-band analysis.
• Known issues exist, requiring users to consult external assessment websites for details.
• The 16-day aggregation window means daily values are not independent instantaneous measurements.

Provenance

Source

LPCLOUD using NASA Terra and Aqua MODIS satellite data.

Collection Method

Produced daily using a 16-day rolling window of MODIS observations.

Time Range

Daily coverage.

Freshness

Daily

Geography

Global.