VJ143D70: VIIRS White-Sky Albedo for Band M4 Daily Global Climate Grid

NOAA-20 VIIRS VJ143D70 provides daily white-sky albedo values for the M4 band (0.555 μm) at a 30 arc-second (1,000 meter) resolution. The product is generated using a 16-day rolling window of data, temporally weighted to the ninth day, and formatted on a global Climate Modeling Grid (CMG). This dataset is part of a larger suite offering albedo for multiple VIIRS spectral bands, including the Day/Night Band, for use in surface energy balance and climate simulation studies.

Use Cases

• Modeling surface energy balance in climate simulations based on the global Climate Modeling Grid (CMG) format.
• Analyzing temporal trends in surface reflectance using the daily product generated from a 16-day data window.
• Studying vegetation and land surface properties using the green spectral band (M4 at 0.555 μm) albedo.
• Integrating albedo data with other VIIRS land products for comprehensive Earth system analysis.

Strengths

• Provides global coverage on a standardized Climate Modeling Grid (CMG) designed for climate models.
• Offers daily temporal resolution, synthesized from a 16-day window to improve data quality.
• Includes algorithm improvements from the S-NPP VIIRS V002 version, such as enhanced calibration and geolocation accuracy.

Limitations

• Metadata completeness is low; specific column names, row counts, and file sizes are not provided.
• Each product file contains only a single data layer, which may complicate multi-band analysis.
• Known issues exist and require external consultation of the MODIS/VIIRS Land Quality Assessment website.

Provenance

Source

LPCLOUD (via NASA Earthdata and Data.gov)

Collection Method

Satellite remote sensing data from the NOAA-20 VIIRS instrument, processed using BRDF/Albedo algorithms.

Time Range

Daily production, using a rolling 16-day window of input data.

Freshness

Last updated on 2026-04-09 according to nasa_earthdata and datagov.

Geography

Global