VIIRS/NPP Albedo Daily L3 Global 500 m SIN Grid NRT
The VIIRS/NPP Albedo Daily L3 Global 500 m SIN Grid NRT (VNP43IA3N) product provides albedo values at 500 m resolution for the bihemispherical reflectance white-sky albedos (WSA) and directional hemispherical reflectance black-sky albedos (BSA) at local solar noon. The VNP43IA3N 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 VNP43IA3N product provides a total of 9 SDS layers including: BSA, WSA, and mandatory quality layers for VIIRS imagery bands I1, I2, and I3.
| Science Keywords: |
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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 | ||
- Title: VIIRS/NPP Albedo Daily L3 Global 500 m SIN Grid NRT
- Version: 1
- Creator: LANCEMODIS
- Publisher: LANCEMODIS
- Release Date: 2019-01-01T00:00:00.000Z
- Linkage: https://doi.org/10.5067/VIIRS/VNP43IA3N.001
- GENERAL DOCUMENTATION: https://earthdata.nasa.gov/earth-observation-data/near-real-time/download-nrt-data/viirs-nrt, NASA LANCE Near Real Time Data Product Information
Collection Information
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DOI
10.5067/VIIRS/VNP43IA3N.001
Data Identification
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Processing Level
3
- Quality This is a near real-time (NRT) product that has undergone expedited processing to make it available within 3 hours of observation time to meet the needs of the NRT applications community. NRT data are subject to geolocation errors or reprocessing. Usually the geolocationalerrors are minimal (less than 100 meters), however, there are situations, particularly before and after spacecraft maneuvers and during space weather events, when the difference can increase up to several kilometers.
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Collection Progress
Active
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Use Constraints
None. See disclaimer: https://earthdata.nasa.gov/data/near-real-time-data/about-lance/disclaimer
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Access Constraints
No constraints but users need to be registered with the ESDIS User Registration system (https://urs.eosdis.nasa.gov/users/new) to download files.
Data Dates
| Creation |
Other Descriptive Keywords
Ancillary Keywords
- Near Real Time (NRT)
- LANCE
- RELATIVE_START_DATE: -8
ISO Topic Categories
- ENVIRONMENT
- GEOSCIENTIFIC INFORMATION
Acquisition Information
Projects
| Project Short Name | Campaigns | Project Dates |
|---|---|---|
| LANCE | No campaigns listed. | No dates provided. |
| SUOMI-NPP | No campaigns listed. | No dates provided. |
Temporal Information
Spatial Information
Generic Resolutions
Generic Resolution 1
X Dimension500 Meters
Y Dimension500 Meters
| Coverage Type | Zone Identifier | Geometry | Granule Representation |
|---|---|---|---|
| HORIZONTAL | CARTESIAN | GEODETIC |
Resolution and Coordinate System
Horizontal Data Resolution
Location Keywords
- GEOGRAPHIC REGION
- GLOBAL
Data Centers
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NASA/GSFC/SED/ESD/TISL/MODAPS
ARCHIVERMODIS Adaptive Processing System, Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
This data center does not have any addresses listed.
This data center does not have any contact mechanisms listed.
Data Contacts
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LANCEMODIS
Technical ContactLANCEMODIS
This contact does not have any addresses listed.
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C. SCHAAF
InvestigatorC. SCHAAF
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University of Massachusetts Boston
Boston, MA 02125
This contact does not have any contact mechanisms listed.
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NASA LANCE SUPPORT
Data Center ContactNASA LANCE SUPPORT
NASA/GSFC/SED/ESD/TISL/MODAPSThis contact does not have any addresses listed.
Archive And Distribution Information
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Format: HDF5
Format Type: Native
Media: Online (https)
Fees: No Fee