The VIIRS SnowCloud Discriminator (VSCD) combines information from 10 different bands on VIIRS (6 during the day and 4 at night) to help distinguish clouds from snow and ice. Unlike other RGBs for snow and cloud discrimination, which only work during the day, the Snow/ Cloud Discriminator utilizes the Day/Night Band (DNB) so it works around the clock. This is particularly useful during those long winter nights. GINA provides real time access to this product at http://hippy.gina.alaska.edu/distro/cira/
In the VSCD, low clouds appear yellow, mid clouds orange, and high clouds magenta making them easier to distinguish from the white ice or snow. This is a big advantage over single bands like the DayNightBand below that shows only grey shades.
The VIIRS SnowCloud Discriminator was developed by Dr. Steve Miller and Dr. Curtis Seaman at the Cooperative Institute for Research in the Atmosphere (CIRA). More information on this product can be found here: https://rammb2.cira.colostate.edu/wp-content/uploads/2020/01/VIIRS_Cloud_Snow_Discriminator_Quick_Guide_02152018-1.pdf