MCD43D25: Daily Global NIR Albedo Parameters for Climate Models

MCD43D25 Version 6 was decommissioned on July 31, 2023, with users directed to the newer Version 6.1. This NASA product provides daily, globally complete Bidirectional Reflectance Distribution Function (BRDF) isotropic parameters for the Near-Infrared (NIR) broadband at a 1,000-meter resolution, derived from 16 days of combined Terra and Aqua MODIS satellite observations.

Use Cases

• Parameterizing land surface albedo in climate simulation models based on the global Climate Modeling Grid (CMG) product.
• Deriving daily NIR broadband BRDF/Albedo values based on the isotropic parameter used in conjunction with volumetric and geometric parameters.
• Analyzing surface radiative properties over time using data temporally weighted to the ninth day of a 16-day acquisition period.
• Assessing data quality for science applications using the band-specific quality flags described in the user guide.

Strengths

• Provides daily global coverage at a consistent 30 arc second (1,000 meter) spatial resolution.
• Data is produced using observations from two satellite platforms (Terra and Aqua MODIS) over a 16-day period.
• The description details known issues and improvements from the previous version, indicating documented version control.

Limitations

• The specific Version 6 dataset described has been decommissioned, and the documentation advises against substantive use due to known issues in Collection 6.
• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Produced daily using 16 days of Terra and Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) data.

Time Range

Daily production, with data temporally weighted to the ninth day of a 16-day period.

Freshness

Last updated 2026-03-12 23:44:16.128405; freshness should be verified.

Geography

Global coverage.