Release of a new version of CVIIRS

The new CVIIRS 2.0.1 is now available to users of the regional EARS-VIIRS service.

Thursday, 15 February 2018

EARS-VIIRS coverage

CVIIRS is the Compact VIIRS SDR conversion tool, developed by EUMETSAT. It creates products according to the Compact VIIRS SDR format specification from VIIRS SDR and non-terrain corrected geolocation files. Users of the EARS-VIIRS service receive data in the CVIIRS format and must decode the products either with their own reader or using the CVIIRS software.

The dissemination of NOAA-20 VIIRS data is planned to start in the near future (further communication on this will be issued in due course). In order to expand this data, users will need to use the new CVIIRS 2. CVIIRS 2 can also be used to expand the current EARS-VIIRS data from Suomi-NPP (S-NPP). Dissemination of S-NPP EARS-VIIRS data compacted with CVIIRS 2 will begin on 2 May 2018. By this time, users will need to have migrated to CVIIRS 2 in order to be able to expand all EARS-VIIRS products.

Different versions of CVIIRS are currently in use for the M-Band and Day/Night-Band. The CVIIRS 2.0.1 release unifies features from the previous versions of CVIIRS. Notable new features include capabilities to:

  • Compact and expand M-, I- and Day/Night Band data with one tool.
  • Support multiple granules.
  • Handle corrupted data files.
  • Filter input files by filename-pattern and sensing time-range.
  • Support both S-NPP and NOAA-20 (JPSS-1).

Note: this version of CVIIRS breaks backwards compatibility with previous versions of CVIIRS because the command line API has been updated (i.e. the argument --cc has been replaced with -p). Due to various other improvements, products compacted by CVIIRS 2 cannot be expanded by earlier versions of CVIIRS. CVIIRS 2, however, is capable of processing data compacted with previous versions of CVIIRS.

The new version of CVIIRS, CVIIRS 2.0.1, can be downloaded from our Support Software and Tools page.

Test data produced using this version of the tool are available on our FTP server:

Further information can be found in the Software User Manual and the Compact VIIRS SDR Product Format User Guide.

EARS-VIIRS data are distributed on EUMETCast Europe on the NPP-2 channel (PID: 500, Multicast address:

Users not yet subscribed to EARS-VIIRS data and wishing to receive them should register via our Earth Observation Portal (EOP).

For more information, contact our User Service Helpdesk.

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