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Description

The second of the two Near Real Time (NRT)VIIRS DNB-based datasets is a daily moonlight- and atmosphere-corrected Nighttime Lights (NTL) product called VIIRS/JPSS1 Gap-Filled Lunar BRDF-Adjusted Nighttime Lights Daily L3 Global 500m Linear Lat Lon Grid. Known by its short-name, VJ246A2, 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. The VJ246A2_NRT product files are provided in standard Hierarchical Data Format–Earth Observing System (HDF-EOS5) format.

Version Description

The current version 2.0 (V2) is the first version for VJ246A2_NRT product.

Product Summary

Platforms
NOAA-21
Instruments
VIIRS
Projects
LANCE ,
Black Marble
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Spatial Resolution
0.004167 Decimal Degrees x 0.004167 Decimal Degrees
Location
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2026-07-15 to Present
Temporal Resolution
1 Day
Data Partner
Land, Atmosphere Near real-time Capability for EOS (LANCE) Moderate Resolution Imaging Spectroradiometer (MODIS) (NASA/GSFC/EOS/ESDIS/LANCE MODIS)
Concept ID
C4249684820-LANCEMODIS
Data State
ACTIVE
Processing Level
3
Published
Science Keywords
Visible Radiance

File Naming Convention

file_naming_convention = VJ246A2_NRT.AYYYYDDD.hXXvYY.VVV.h5
Example: VJ246A2_NRT.A2026186.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