Daily Global Nadir-Adjusted Surface Reflectance at 1km Resolution

MCD43D64 provides daily, nadir BRDF-adjusted reflectance values for MODIS band 3 at a 30 arc-second (1km) spatial resolution. The product is generated by LPCLOUD using 16 days of combined Terra and Aqua MODIS observations, temporally weighted to represent the ninth day. This dataset is part of the Climate Modeling Grid suite designed for global climate simulation models.

Use Cases

• Model land surface albedo for climate simulations using the daily nadir-adjusted reflectance values.
• Monitor vegetation health and phenology by analyzing temporal trends in the Band 3 NBAR data.
• Assess surface reflectance consistency by applying the band-specific quality flags to filter for high-quality full inversion results.
• Study diurnal energy balance by utilizing data modeled for local solar noon conditions.

Strengths

• Global spatial coverage suitable for climate-scale analysis.
• Daily temporal resolution produced from a 16-day observation window.
• Nadir BRDF adjustment corrects for view-angle effects in reflectance.

Limitations

• Each product file contains only one data layer, complicating multi-band analysis.
• Data quality is dependent on the availability of clear-sky observations within the 16-day window.
• The 1km resolution may be insufficient for fine-scale ecological or urban studies.

Provenance

Source

LPCLOUD, derived from NASA Terra and Aqua MODIS instruments.

Collection Method

Produced using the NBAR algorithm on 16 days of MODIS data, temporally weighted to the ninth day.

Time Range

Daily coverage from the MODIS mission operational period.

Freshness

Daily

Geography

Global