The Visible Infrared Imaging Radiometer Suite (VIIRS) Version 1 (Collection 1) sets will be retired from the NSIDC DAAC on April 8, 2025. Upon retirement, data will no longer be accessible, but all related documentation will remain available on the data set web page for future reference. We recommend using VIIRS Version 2 (Collection 2) of these data sets.
Version 2 includes 13 new L2 and L3 data sets from both the NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) satellite and the National Oceanic and Atmospheric Administration-20 (NOAA-20) satellite. It also includes the following improvements over Version 1 data:
- Snow cover, sea ice, and ice surface temperature algorithms are more compatible with MODIS Collection 6.1 algorithms, providing a more extensive, multi-sensor climate data record.
- Cloud masking has been improved.
- Noise detection has been enhanced and over-noisy detectors are now better averaged.