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Collection 1 Suomi-NPP Product Descriptions: VIIRS-CrIS Data Fusion

Last update: October 07, 2019

Data Set Short Name:

Data Set Long Name:
SNPP VIIRS+CrIS Fusion 6-Min L2 Swath 750m


Visible-Infrared Imaging-Radiometer Suite (VIIRS) Cross-track Infrared Sounder (CrIS)

Product Description:
The VIIRS-CrIS Data Fusion Level-2 Product is designed to facilitate improved continuity in derived cloud and moisture products realized with HIRS and MODIS and to continue other applications that require IR absorption spectral bands. Based on data fusion with VIIRS (Visible Infrared Imaging Radiometer Suite) and CrIS (Cross-track Infrared Sounder), infrared (IR) absorption band radiances for VIIRS are constructed at 750m spatial resolution (i.e., M-band resolution). These spectral bands are similar to the MODIS spectral bands. The fusion radiances, and look-up tables required to compute the related brightness temperatures, are stored in compressed NetCDF4 files of 6-minutes duration.

The L2 VIIRS+CRiS Fusion product has a horizontal pixel size of 750 m, which is the native VIIRS moderate-resolution (M) band pixel-size. Consult the VIIRS+CRiS Fusion product User Guide/ATBD for additional information regarding this product’s algorithm, file format, global and data-field attributes, quality control flags, etc.

file_naming_convention =

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

Production Frequency:
240 files per day

Spatial Coverage:

Spatial Resolution:
750 m at nadir

File Size:
~220 MB

Related Links:
(VIIRS-CrIS Data Fusion Product information site)

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

Author (PI), et al., 2017. Product name as given on product web site. NASA MODIS Adaptive Processing System, Goddard Space Flight Center, USA: [DOI link].

For example:
Baum, B. A., et al., 2019. SNPP VIIRS+CrIS Fusion L2 Product. NASA MODIS Adaptive Processing System, Goddard Space Flight Center, USA:

Data Authors:
B. A. Baum, E. Weisz, and W. P. Menzel

Dataset Originator/Creator:
VIIRS Atmosphere Science Team / SSEC, University of Wisconsin-Madison

Dataset DOI:

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