Cloud Types/Formations Flashcards
0
Q
Frost occurs when DB temps fall to 0 ‘C, occurs on
A
Clear nights when IR is emitted from the ground, cooling it quickly.
1
Q
Fog is cloud at the ground, formed when
A
Air is chilled at the surface.
2
Q
ELR - Temp drops by 6 ‘C for every 1km ascended, up to about 10 km. the ELR is
A
6 ‘C km -1
3
Q
If the ELR is greater than the SALR the conditions are
A
Unstable and convection can take place.
4
Q
Clouds are formed when moist air is cooled to reach saturation,
A
Minute water droplets are formed from further cooling, which condense to form a cloud.
5
Q
Minute water droplets are commonly formed by ascent when
A
Air cools adiabatically.
6
Q
Adiabatically:
A
Without heat exchange - Air parcel must be expanding, therefore the temp decreases.
7
Q
If the air parcel shrinks then
A
Temp would increase.
