MCD43D65: Daily Global Nadir-Adjusted Reflectance for MODIS Band 4 at 1km

Global daily surface reflectance data produced by NASA using 16-day composites from the Terra and Aqua MODIS satellites. The MCD43D65 product provides Nadir BRDF-Adjusted Reflectance for MODIS spectral band 4 at a 30 arc-second (approximately 1,000-meter) resolution, temporally weighted to the ninth day of the composite period. This Climate Modeling Grid product is designed for use in climate simulation models.

Use Cases

• Modeling land surface albedo for climate simulations based on the Climate Modeling Grid (CMG) product design.
• Analyzing daily surface reflectance changes based on the nadir BRDF-adjusted reflectance (NBAR) algorithm.
• Assessing data quality for scientific applications based on the band-specific quality flags mentioned in the user guide.
• Studying view angle effects on satellite observations based on the NBAR algorithm's correction for directional reflectances.

Strengths

• Data is produced daily using a 16-day composite from two satellite platforms (Terra and Aqua MODIS).
• Provides global coverage at a consistent 30 arc-second (approximately 1,000-meter) spatial resolution.
• Version 6.1 incorporates specific calibration improvements, including RVS, optical crosstalk, and polarization corrections.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Each product file contains just one data layer, which may require handling multiple files for multi-band analysis.

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; temporal weighting to the ninth day of a 16-day composite.

Freshness

Last updated 2026-03-12 23:47:10.221937; freshness should be verified.

Geography

Global