Cloud Classification Flashcards
What is a stratus cloud?
Flat and smooth
Whats a cumulus cloud?
Puffy
Whats a cirrus cloud?
Feathery/whispery
Whats a nimbus cloud?
Rain bearing.
What is the base altitude of high level clouds in metres?
> 5000m
What is the base altitude of med level clouds?
2000-7000m
What is the base altitude of low level clouds?
2000 m max
What is the state of water when its zero to minus ten within a cloud?
Super cooled water droplets.
What type of cloud is classed as detached?
Cirrus.
What type of cloud is classed as thin sheet with no shading?
Cirrocumulus.
What type of cloud is classed as transparent or white veil?
Cirrostratus.
What cloud is classed as white or grey patches?
Altocumulus.
What cloud is classed as greyish cloud sheet which is thin enough to show the sun.
Altostratus.
Whats the difference between cirrostratus and alto stratus?
Altostratus cannot produce the halo phenomina.
What cloud is classed as grey patches or layers that are non fibrous?
Stratocumulus.
What cloud type is classed as grey cloud with a uniform base?
Stratus.
What cloud type is classed as thick grey cloud that blocks out the sun?
Nimbostratus.
What type of cloud is classed as detached clouds with sharp outlines?
Cumulus.
What cloud type is classed as heavy and dense with a considerable vertical extent?
Cumulonimbus.
What what height level can a nimbostratus be found?
Middle.
What is a castellans?
Turrets or towers at the top of clouds.
Whats a lenticularis?
Lens shaped clouds.
What is a congestus?
Cauliflower looking tops to cumulus
What is a cumulus congestus, of great height, also called?
Towering cumulus.
Whats a calvus?
The breaking down of a cumulonimbus.
What is a capillatus?
Anvil looking cumulonimbus.
How many oktas is few?
1-2
How many oktas is scattered?
3-4
What are the oktas for broken?
5-7
If you are flying visual, what ceiling should you not take off into?
450m/1500ft
If you are flying visual, what visibility should you mot take off into?
5km
What is the effect of the tropopause inversion on the formation of clouds within the troposphere? A cloud, reaching the inversion, may stop its ascent and the upper winds may produce a x shape,
Anvil
warm over cold = x
cold over warm = x
Stratus - cumulus
When an aircraft is flying through a cirriform cloud at FL300, ice accretion in the engines and on the airframe is likely/unlikely oi
Unlikely
The main components of a cirrostratus are:
Icecrystals
The main components of a cirrostratus are:
Icecrystals
Clouds in patches, sheets or grey or whitish layers made up of elements resembling large pebbles or rollers, together or not, and always clear of the ground are:
Stratocumulus
Snow grains generally fall from x clouds or supercooled clouds.
Stratiform
The coalescence prosses occurs at what latitude and produces light rain and drizzle?
Mid
