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VIIRS/JPSS1 BRDF/Albedo Model Parameters Daily L3 Global 500 m SIN Grid NRT

Metadata Updated: November 5, 2024

The VIIRS/JPSS1 BRDF/Albedo Model Parameters Daily L3 Global 500 m SIN Grid Near Real Time (NRT), short-name VJ143IA1N product provides BRDF/Albedo model parameters at 500 meter (m) resolution. The VJ143IA1N product is produced daily using 16-day VIIRS data (i.e., the current day and the previous 15 days).

The VJ143 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 (VJ143IA4N), while also computing integrated black-sky albedo (BSA) at local solar noon and white-sky albedo (WSA) (VJ143IA3N). 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 VJ143IA1N data product provides a total of six SDS layers including: mandatory quality bands and three multi-dimensional model parameter bands representing fiso, fvol, and fgeo of the VIIRS imagery bands: I1, I2, and I3. Each data product file is provided in HDF-EOS5 format.

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 7, 2023
Metadata Updated Date November 5, 2024

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date December 7, 2023
Metadata Updated Date November 5, 2024
Publisher NASA/GSFC/SED/ESD/TISL/MODAPS
Maintainer
Identifier C2808108740-LANCEMODIS
Data First Published 2023-11-20
Language en-US
Data Last Modified 2024-11-19
Category NOAA - SPACE WEATHER PROGRAM, 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/JPSS1 BRDF/Albedo Model Parameters Daily L3 Global 500 m 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/VJ143IA1N.002. https://doi.org/10.5067/VIIRS/VJ143IA1N.002.
Creator LANCEMODIS
Harvest Object Id ce692e3e-f278-447b-899b-2781e9058fed
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://doi.org/10.5067/VIIRS/VJ143IA1N.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 df9dd3ce4f157bca0e58d15f3debf4d2a9c5e4ed0493cce5dd82e3faf0e39837
Source Schema Version 1.1
Spatial
Temporal 2023-11-20T00:00:00Z/2024-11-04T00:00:00Z

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