VJ143D50: VIIRS Valid Observation Quality for Band M11

NOAA-20 VIIRS VJ143D50 is a daily global dataset providing the valid observation quality layer for the M11 spectral band, derived from 16 days of data at 1,000-meter resolution. It is part of the BRDF/Albedo Climate Modeling Grid product suite, with data temporally weighted to the ninth day of the retrieval period. The product incorporates algorithm improvements from the S-NPP VIIRS V002 version, including enhanced calibration and geolocation accuracy.

Use Cases

• Filtering satellite retrievals for climate modeling based on the valid observation quality layer.
• Assessing temporal data coverage for VIIRS band M11 over a 16-day composite period.
• Improving downstream land surface products, such as vegetation indices, by accounting for aerosol quantity flag corrections.
• Analyzing global land surface anisotropy and reflectance properties at a Climate Modeling Grid scale.

Strengths

• Provides daily global coverage at a consistent 30 arc-second (1,000 meter) resolution.
• Incorporates algorithm improvements including better calibration coefficients and geolocation accuracy for the entire NOAA-20 mission.
• Data is part of a multi-parameter suite (VJ143D40-VJ143D53) designed specifically for climate simulation models.

Limitations

• Metadata for specific column names, row counts, and file sizes is not provided across any source.
• The dataset's license is listed as 'other-license-specified' without explicit details on reuse terms.
• Known issues exist and require referral to an external MODIS/VIIRS Land Quality Assessment website for full details.

Provenance

Source

LPCLOUD (via NASA Earthdata and Data.gov)

Collection Method

Satellite remote sensing from the NOAA-20 Suomi NPP VIIRS instrument, processed through the VJ143 algorithm.

Time Range

Daily production using a rolling 16-day data composite.

Freshness

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

Geography

Global coverage on a Climate Modeling Grid (CMG).