VNP43D83: Nadir-Adjusted Surface Reflectance for VIIRS Band M4

Global daily Nadir BRDF-Adjusted Reflectance (NBAR) data at 30 arc-second (1,000 meter) resolution, produced from the Suomi NPP VIIRS satellite. The VNP43D83 product provides surface reflectance for band M4 (0.555 μm), corrected to a nadir view at local solar noon using 16 days of observations weighted to a central date. It is formatted on a Climate Modeling Grid for use in global climate simulations.

Use Cases

• Modeling surface albedo and anisotropy for climate simulations based on the BRDF-adjusted reflectance values.
• Analyzing temporal changes in green vegetation reflectance using the 0.555 μm (green) band M4.
• Inputting corrected surface reflectance into land cover or phenology models based on the nadir-adjusted, solar noon standard.
• Assessing data quality and known aerosol flagging issues over arid regions for downstream product reliability.

Strengths

• Provides global coverage on a Climate Modeling Grid designed for climate simulation models.
• Offers daily temporal resolution with a consistent 16-day compositing and temporal weighting method.
• Corrects for view-angle effects to standardize reflectance values to a nadir view at local solar noon.

Limitations

• This Version 1 product was decommissioned on July 31, 2025, and is no longer current.
• Known data quality issues exist, including an abnormally high activation of the high aerosol flag in Collection 1 input data, reducing usable observations.
• Column names, row counts, and specific data layers are not detailed in the provided metadata.

Provenance

Source

NASA/NOAA Suomi NPP Visible Infrared Imaging Radiometer Suite (VIIRS)

Collection Method

Satellite remote sensing, processed using the NBAR algorithm from the VNP43D BRDF/Albedo product suite.

Time Range

Daily production, but specific start and end dates are not provided.

Freshness

2026-04-09 20:55:10.085543

Geography

Global