Cold Clouds

  • Cold clouds are defined as those clouds with tops colder than 0C

  • can be comprised of:

    • water
    • super-cooled water - liquid droplets observed at temps less than 0C
    • ice
  • Notice that super cooled water is found at altitudes where:

    • -40C < Temp < 0C

  • only ice is found at altitudes above -40C

  • Q: So how does frozen precipitation form in cold clouds?