VIIRS/NPP BRDF/Albedo Quality Daily L3 Global 500 m SIN Grid NRT

The VIIRS/NPP BRDF/Albedo Quality Daily L3 Global 500 m SIN Grid NRT (VNP43IA2N) Version 1 product provides BRDF and Albedo quality at 500 meter (m) resolution. The VNP43IA2N product is produced daily using 16-day VIIRS data (i.e., the current day and the previous 15 days to produce 16-day product).

The VNP43 algorithm uses the RossThick/Li-Sparse-Reciprocal (RTLSR) semi-empirical kernel-driven BRDF model, with the three kernel weights from VNP43IA1N to reconstruct surface anisotropic effects, correcting the directional reflectance to a common view geometry (VNP43IA4N), while also computing integrated black-sky albedo (BSA) at local solar noon and white-sky albedo (WSA) (VNP43IA3N). Researchers can use the BRDF model parameters with a simple polynomial, to obtain black-sky albedo at any solar illumination angle. Likewise, both the BSA and WSA Science Dataset (SDS) layers can be used with a simple polynomial, to manually estimate instantaneous actual albedo (blue-sky albedo). Additional details regarding the methodology are available in the Algorithm Theoretical Basis Document (ATBD) at https://lpdaac.usgs.gov/sites/default/files/public/product_documentation/vnp43_v1_atbd.pdf.

The VNP43IA2N data product provides a total of 11 SDS layers including: BRDF/Albedo band quality (inversion information) and days of valid observation within a 16-day period for VIIRS imagery bands I1, I2, and I3, as well as land water type class flag, snow BRDF albedo class flag, local solar noon, and the platform name.

Data and Resources

Field Value
accessLevel public
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citation LANCEMODIS. 2019-01-01. VIIRS/NPP BRDF/Albedo Quality Daily L3 Global 500 m SIN Grid NRT. Version 1. NASA GSFC LANCE. Archived by National Aeronautics and Space Administration, U.S. Government, LANCEMODIS. https://doi.org/10.5067/VIIRS/VNP43IA2N.001. http://doi.org/10.5067/VIIRS/VNP43IA2N.001.
creator LANCEMODIS
identifier C1581594221-LANCEMODIS
issued 2019-01-01
landingPage https://doi.org/10.5067/VIIRS/VNP43IA2N.001
language {en-US}
metadata_type geospatial
modified 2019-07-03
programCode {026:001}
publisher NASA/GSFC/SED/ESD/TISL/MODAPS
release-place NASA GSFC LANCE
resource-type Dataset
source_datajson_identifier true
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spatial {"type": "Polygon", "coordinates": [[[-180.0, -80.0], [180.0, -80.0], [180.0, 80.0], [-180.0, 80.0], [-180.0, -80.0]]]}
temporal 2019-01-01T00:00:00Z/2020-11-30T00:00:00Z
theme {LANCE,SUOMI-NPP,geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • earth-science
  • geo
  • geoss
  • land-surface
  • national
  • north-america
  • surface-radiative-properties
  • united-states
isopen False
license_id notspecified
license_title License not specified
maintainer LANCEMODIS
maintainer_email support@earthdata.nasa.gov
metadata_created 2025-11-22T21:44:24.709614
metadata_modified 2025-11-22T21:44:24.709618
notes The VIIRS/NPP BRDF/Albedo Quality Daily L3 Global 500 m SIN Grid NRT (VNP43IA2N) Version 1 product provides BRDF and Albedo quality at 500 meter (m) resolution. The VNP43IA2N product is produced daily using 16-day VIIRS data (i.e., the current day and the previous 15 days to produce 16-day product). The VNP43 algorithm uses the RossThick/Li-Sparse-Reciprocal (RTLSR) semi-empirical kernel-driven BRDF model, with the three kernel weights from VNP43IA1N to reconstruct surface anisotropic effects, correcting the directional reflectance to a common view geometry (VNP43IA4N), while also computing integrated black-sky albedo (BSA) at local solar noon and white-sky albedo (WSA) (VNP43IA3N). Researchers can use the BRDF model parameters with a simple polynomial, to obtain black-sky albedo at any solar illumination angle. Likewise, both the BSA and WSA Science Dataset (SDS) layers can be used with a simple polynomial, to manually estimate instantaneous actual albedo (blue-sky albedo). Additional details regarding the methodology are available in the Algorithm Theoretical Basis Document (ATBD) at https://lpdaac.usgs.gov/sites/default/files/public/product_documentation/vnp43_v1_atbd.pdf. The VNP43IA2N data product provides a total of 11 SDS layers including: BRDF/Albedo band quality (inversion information) and days of valid observation within a 16-day period for VIIRS imagery bands I1, I2, and I3, as well as land water type class flag, snow BRDF albedo class flag, local solar noon, and the platform name.
num_resources 3
num_tags 11
title VIIRS/NPP BRDF/Albedo Quality Daily L3 Global 500 m SIN Grid NRT