MODIS Daily Global NIR BRDF Isotropic Parameter at 1km Resolution

Daily global data from 2000 onward provides the isotropic parameter for the Near-Infrared broadband, derived from Terra and Aqua MODIS observations. LPCLOUD produces this Climate Modeling Grid product at 30 arc-second (approximately 1km) resolution for integration into climate simulation models. Each daily file is temporally weighted to represent the ninth day of a 16-day data collection window.

Use Cases

• Deriving NIR broadband albedo values by combining the isotropic parameter with volumetric and geometric parameters from companion datasets.
• Assessing daily changes in surface reflectance anisotropy for the NIR band using the BRDF isotropic parameter.
• Inputting the 1km resolution isotropic parameter into climate models to improve land surface energy budget calculations.
• Filtering data for high-quality full inversion results using the band-specific quality flags referenced in the user guide.

Strengths

• Daily temporal resolution enables tracking of short-term surface reflectance changes.
• Global spatial coverage at 30 arc-second resolution supports climate-scale modeling.
• Data is produced using 16 days of MODIS observations from two satellites (Terra and Aqua) for robust retrievals.

Limitations

• Each product file contains only one data layer, requiring multiple files for complete parameter analysis.
• Known issues exist, requiring users to consult external assessment websites for full details.
• The large file size per single layer may complicate data management and processing.

Provenance

Source

LPCLOUD using data from NASA's Terra and Aqua MODIS instruments.

Collection Method

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

Time Range

From MODIS instrument operational dates onward (2000 for Terra, 2002 for Aqua).

Freshness

Daily

Geography

Global