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Description

The Near Real Time (NRT) VIIRS/JPSS2 Raw Radiances in Counts 6-Min L1A Swath, short-name VJ201_NRT data product contains the unpacked, raw VIIRS science, calibration and engineering data; the extracted ephemeris and attitude data from the spacecraft diary packets; and the raw ADCS and bus-critical spacecraft telemetry data from those packets, with a few critical fields extracted.

For more information download VIIRS Level 1 Product User's Guide at:
https://ladsweb.modaps.eosdis.nasa.gov/api/v2/content/archives/Document Archive/Science Data Product Documentation/Processing and Algorithm Version History/NASA_VIIRS_L1B_UG_August_2021.pdf

Product Summary

Platforms
NOAA-21
Instruments
VIIRS
Spatial Extent
N: 90 S: -90 E: 180 W: -180
Spatial Resolution
750 Meters x 750 Meters
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2025-01-24 to Present
Data Partner
MODIS Adaptive Processing System, Biospheric Information Systems Branch, Hydrospheric and Biospheric Sciences Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/HBSL/BISB/MODAPS)
Land, Atmosphere Near real-time Capability for EOS (LANCE) Moderate Resolution Imaging Spectroradiometer (MODIS) (NASA/GSFC/EOS/ESDIS/LANCE MODIS)
Concept ID
c3383725050-lancemodis
Data State
ACTIVE
Processing Level
1A
Published

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

VIIRS Level 1 Processing Group At Ocean SIPS. (2025). VIIRS/JPSS2 Raw Radiances in Counts 6-Min L1A Swath [Data set]. NASA LANCE MODIS at the MODAPS. https://doi.org/10.5067/VIIRS/VJ201_NRT.021 Date Accessed: 2025-07-12

Data Center Citation

VIIRS Level 1 Processing Group. 2025. VIIRS/JPSS2 Raw Radiances in Counts 6-Min L1A Swath. MODAPS at NASA/GSFC: LANCEMODIS. https://doi.org/10.5067/VIIRS/VJ201_NRT.021.

File Naming Convention

VJ201_NRT.AYYYYDDD.HHMM.CCC.nc Example: VJ201_NRT.A2025023.0000.021.nc

AYYYYDDD = Acquisition Year and Day of Year HHMM = Acquisition Hour and Minute YYYYDDDHHMMSS = Production Date and Time CCC = Collection number nc = NetCDF4

Documents

GENERAL DOCUMENTATION NASA LANCE Near Real Time Data Product Information

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