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Collection 2 JPSS1 Product Descriptions: VJ102GDC_NRT

Last update: April 8, 2019

Data Set Short Name:
VJ102GDC_NRT

Data Set Long Name:
VIIRS/JPSS1 Moderate-Resolution Dual Gain Bands Calibrated Radiance 6-Min L1B Swath 750m NRT

Platform:
Joint Polar Satellite System 1 (JPSS1)

Instrument:
Visible-Infrared Imaging-Radiometer Suite (VIIRS)

Product Description:
The Level-1 and Level-2 swath products are generated from the processing of 6 minutes of VIIRS data acquired during the JPSS1 satellite overpass. The VIIRS sensor has 5 high-resolution imagery channels (I-bands) that have 32 detectors (32 rows of pixels per scan), with twice the resolution of the M-bands and the DNB, that span the wavelengths from 0.640 µm to 11.45 µm. There are also 7 dual-gain VIIRS bands. The dual gain moderate resolution bands (M1 to M5, M7 and M13) have 6304 samples and the other moderate resolution bands have 3200.

The Near Real Time (NRT) VIIRS/JPSS1 Moderate-Resolution Dual Gain Bands Calibrated Radiance 6-Min L1B Swath 750m product (VJ102GDC_NRT) contains unaggregated, calibrated TOA radiances for those VIIRS sub-pixel samples that are aggregated along-scan during post-calibration ground processing. In other words, this file contains the calibrated M1 – M5, M7 and M13 dual gain band data from the nadir and near-nadir zones that would otherwise be discarded following post-calibration aggregation/Earth View Radiometric Calibration Unit.

For additional information, see the Operational Algorithm Description (OAD) Document for the L1B product. The document describes how VIIRS operates in space and provides the equations implemented by the L1B software to generate the MODIS Level-1 intermediate products. It is a summary document that presents the formulae and error budges used to transform VIIRS digital counts to radiance and reflectance.


file_naming_convention = VJ102GDC.AYYYYDDD.HHMM.CCC.YYYYDDDHHMMSS.nc

  • AYYYYDDD = Acquisition Year and Day of Year
  • HHMM = Hour and minute of acquisition
  • CCC = Collection number
  • YYYYDDDHHMMSS = Production Date and Time
  • nc = NetCDF5

Production Frequency:
240 files per day

Spatial Coverage:
Global

Spatial Resolution:
750m at nadir

File Size (MB):
~230

Related Links:
http://viirsland.gsfc.nasa.gov/index.html.
https://jointmission.gsfc.nasa.gov/suomi.html.

Citation:
We kindly request that you cite the use of this data set in a publication using the following citation.

Author (PI), et al., 2016. Product name as given on web site. NASA MODIS Adaptive Processing System, Goddard Space Flight Center, USA: [link as given on product site].

For example:

Dataset Originator/Creator:
VIIRS characterization Support Team (VCST)/ MODIS Adaptive Processing System (MODAPS)

Dataset DOI:
http://dx.doi.org/10.5067/VIIRS/VJ102GDC_NRT.002


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