Cloud and precipitation Flashcards
Name 2 weather situations in which convection will occur (not just ‘‘unstable air’’)
1) Summer afternoons, at cold fronts, cold air over warm water
2) Trof of low pressure in summer
Name 3 clouds convection will produce…
Cumulus (CU), Towering Cumulus (TCU), Cumulonimbus (CB)
Which cloud is produced my mechanical turbulence and is associated with bumpy flying conditions?
SC
Which cloud gives the impression of looking through ground glass at the sun?
AS
Which cloud covers a large area, produces continuous precipitation, which in turn may produce ST and SF below?
NS
Which is the most dangerous cloud?
CB
Which 3 clouds can produce light continuous precipitation or intermittent precipitation
AC, AS, SC
Which cloud produces drizzle
ST
Which 3 clouds can produce showers?
CB, ACC, TCU
What is the relationship between the relative humidity at the surface (T-Td) and the height of cloud bases above ground?
Lower the spread is between T and Td, lower the base of the cloud will be
List 4 cloud families and the height range of the base of those clouds.
1) Low clouds, below 6500’
2) MIddle clouds, 6500’@19 999’
3) High clouds, 20 000’ et plus
4) Clouds of vertical development (convective) bases 1600’@8000’
How does CS appear when viewing it against the sun?
Halo
CI,CS and CC are composed of…
Ice crystal
What is required for the ice crystal growth process to occur?
a mixture of water droplets and ice crystals at below freezing temperatures.
Which cloud family doesn’t produce precipitation?
High clouds
