The VIIRS/NPP BRDF/Albedo Model Parameters Daily L3 Global 500 m SIN Grid NRT (VNP43IA1N) product provides BRDF/Albedo model parameters at 500 meter (m) resolution. The VNP43IA1N 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 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 VNP43IA1N 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.
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Spatial Extent: | Bounding Rectangle: N: 80.0 S: -80.0 E: 180.0 W: -180.0 |
Data Format(s): | Distribution: HDF5 |
Temporal Extent: | Platform(s): | SUOMI-NPP | |
Data Center(s): | NASA/GSFC/SED/ESD/TISL/MODAPS | Instrument(s): | VIIRS |
Version: | 1 |
10.5067/VIIRS/VNP43IA1N.001
Creation |
3
Active
None. See disclaimer: https://earthdata.nasa.gov/data/near-real-time-data/about-lance/disclaimer
No constraints but users need to be registered with the ESDIS User Registration system (https://urs.eosdis.nasa.gov/users/new) to download files.
Project Short Name | Campaigns | Project Dates |
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LANCE | No campaigns listed. | No dates provided. |
SUOMI-NPP | No campaigns listed. | No dates provided. |
Coverage Type | Zone Identifier | Geometry | Granule Representation |
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HORIZONTAL | CARTESIAN | GEODETIC |
500 Meters
500 Meters
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University of Massachusetts Boston
Boston,
MA
02125
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Format: HDF5
Format Type: Native
Media: Online (https)
Fees: No Fee