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Description

The second of the two VIIRS DNB-based datasets is a daily moonlight- and atmosphere-corrected Nighttime Lights (NTL) product called VIIRS/NPP Gap-Filled Lunar BRDF-Adjusted Nighttime Lights Daily L3 Global 500m Linear Lat Lon Grid. Known by its short-name, VNP46A2, this product contains seven Science Data Sets (SDS) that include DNB BRDF-Corrected NTL, Gap-Filled DNB BRDF-Corrected NTL, DNB Lunar Irradiance, Latest High-Quality Retrieval, Mandatory Quality Flag, Cloud Mask Quality Flag, and Snow Flag. VNP46A2 products are provided in standard Hierarchical Data Format–Earth Observing System (HDF-EOS5) format.

Product Summary

Platforms
Suomi-NPP
Instruments
VIIRS
Spatial Extent
N: 90 S: -90 E: 180 W: -180
Geographic Region
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2025-01-01 to Present
Data Partner
Land, Atmosphere Near real-time Capability for EOS (LANCE) Moderate Resolution Imaging Spectroradiometer (MODIS) (NASA/GSFC/EOS/ESDIS/LANCE MODIS)
Concept ID
C3363944097-LANCEMODIS
Data State
ACTIVE
Processing Level
3
Published
Science Keywords
Visible Radiance

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

NASA VIIRS Land Science Team. (2025). VIIRS/NPP Gap-Filled Lunar BRDF-Adjusted Nighttime Lights Daily L3 Global 15 arc-second Linear Lat Lon Grid NRT [Data set]. NASA LANCE MODIS at the MODAPS. https://doi.org/10.5067/VIIRS/VNP46A2_NRT.002 Date Accessed: 2025-10-29

File Naming Convention

file_naming_convention = VNP46A2_NRT.AYYYYDDD.hXXvYY.VVV.h5
Example: VNP46A2_NRT.A2025006.h00v01.002.h5

AYYYYDDD = Acquisition Year and Day of Year
HHMM = Hour and minute of acquisition
hXXvYY = Sinusoidal Tile Identifier (horizontalXXverticalYY)
VVV = Collection Version number
h5 = HDF-EOS (version 5) file format

Documents

USER'S GUIDE

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