Atmosphere: Atmospheric Circulation Flashcards
1
Q
Cells (3)
A
- Polar Cell
- Ferrel Cell
- Hadley Cell
2
Q
thermally direct cells
A
- polar
- hadley
3
Q
thermally indirect cell
A
- ferrel
4
Q
what pressure does hot air cause?
A
low pressure
5
Q
what pressure does cold air cause?
A
high pressure
6
Q
surface air moves from…
A
high to low pressure
7
Q
coriolis force
A
- deflects Northern hemisphere winds to the right and Southern hemisphere winds to the left
- caused by the spinning of the earth
8
Q
hadley cell cycle
A
- forms due to intense insolation at the equator
- hot air rises and creates low pressure
- air cools and sinks, splitting both North and South
9
Q
polar cell cycle
A
- cold air sinks over the poles and creates high pressure
- air moves towards the equator
- at 60* N&S, cold and warm air meet and create low pressure
- warm air rises over cold air and moves towards the poles
10
Q
ferrel cell cycle
A
- warm air from 30* meets cold air at 60*
- air rises, and some sinks back towards the tropics
- allows warm air to be carried towards the poles and cool air from the poles to be carried towards the equator
11
Q
the three cell model allows
A
surplus heat to be transferred to the poles from the equator
