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VIIRS/NPP Albedo Daily L3 Global 1km SIN Grid NRT

Metadata Updated: February 3, 2025

The VIIRS/NPP Albedo Daily L3 Global 1 km SIN Grid Near Real Time (NRT), short-name VNP43MA3N product provides albedo values at 1 km resolution for the bi-hemispherical reflectance white-sky albedos (WSA) and directional hemispherical reflectance black-sky albedos (BSA) at local solar noon. The VNP43MA3N product is produced daily using 16-day VIIRS data (i.e., the current day and the previous 15 days).

The VNP43 algorithm uses the RossThick/Li-Sparse-Reciprocal (RTLSR) semi-empirical kernel-driven BRDF model, with the three kernel weights from VNP43MA1N to reconstruct surface anisotropic effects, correcting the directional reflectance to a common view geometry (VNP43MA4N), while also computing integrated black-sky albedo (BSA) at local solar noon and white-sky albedo (WSA) (VNP43MA3N). 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://www.umb.edu/editor_uploads/images/school_for_the_environment_cs/Viirs/VIIRS_ATBD_Apr_Jul2017.pdf

The VNP43MA3N product provides a total of 36 SDS layers including: BSA, WSA, and mandatory quality layers for nine VIIRS moderate bands: M1-M5, M7-M8, and M10-M11, as well as three broadbands: near-infrared (NIR), shortwave infrared (SWIR), and visible (VIS).

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Created Date December 6, 2023
Metadata Updated Date February 3, 2025

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date December 6, 2023
Metadata Updated Date February 3, 2025
Publisher NASA/GSFC/SED/ESD/TISL/MODAPS
Maintainer
Identifier C2807625522-LANCEMODIS
Data First Published 2023-11-20
Language en-US
Data Last Modified 2025-02-18
Category LANCE, Suomi-NPP, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Citation LANCEMODIS. 2023-11-20. VIIRS/NPP Albedo Daily L3 Global 1 km SIN Grid NRT. Version 2. NASA GSFC LANCE. Archived by National Aeronautics and Space Administration, U.S. Government, LANCEMODIS. https://doi.org/10.5067/VIIRS/VNP43MA3N.002. https://doi.org/10.5067/VIIRS/VNP43MA3N.002.
Creator LANCEMODIS
Harvest Object Id 79b1e408-2105-4b0f-86cf-3f914cfdcf28
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://doi.org/10.5067/VIIRS/VNP43MA3N.002
Metadata Type geospatial
Old Spatial -180.0 -80.0 180.0 80.0
Program Code 026:001
Release Place NASA GSFC LANCE
Source Datajson Identifier True
Source Hash cc6c47f27daa85b73ba74fe338710f03bad4f2409d0508fe6d0513ae2ab2a01e
Source Schema Version 1.1
Spatial
Temporal 2023-11-20T00:00:00Z/2025-02-03T00:00:00Z

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