VIIRS/NPP BRDF/Albedo Quality Daily L3 Global 500 m SIN Grid NRT
type: Dataset
description: 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.
issued: 2019-01-01
language: {en-US}
modified: 2019-07-03
spatial: Location
contact point: Organization
  fn: LANCEMODIS
keyword: amerigeo
keyword: amerigeoss
keyword: ckan
keyword: earth-science
keyword: geo
keyword: geoss
keyword: land-surface
keyword: national
keyword: north-america
keyword: surface-radiative-properties
keyword: united-states
theme: {LANCE
theme: SUOMI-NPP
theme: geospatial}

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type: Distribution
description: Access VIIRS data set from the MODAPS/NRT server.
issued: 2020-11-12T04:29:49.835556
modified: 2025-11-22T21:44:24.702344
access URL: https://nrt3.modaps.eosdis.nasa.gov/archive/allData/5000/VNP43IA2N/
media type: application/x-hdf5

View documentation related to this dataset
type: Distribution
description: NASA LANCE Near Real Time Data Product Information
format: HTML
issued: 2020-11-12T04:29:49.835559
modified: 2025-11-22T21:44:24.702737
access URL: https://earthdata.nasa.gov/earth-observation-data/near-real-time/download-nrt-data/viirs-nrt
media type: text/html

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type: Distribution
description: Search results for publications that cite this dataset by its DOI.
format: HTML
issued: 2020-11-12T04:29:49.835549
modified: 2025-11-22T21:44:24.701928
access URL: https://scholar.google.com/scholar
media type: text/html

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type: Agent