Global Wind Circulation

Question 1

The ferrel cell can be found(latitude) -

The Hadley cell can be found(latitude) -

The Polar cell can be found(latitude) -

Answer 1

between 30 and 60 degrees.

From the equator to 30 degrees

From the 60 degrees to the poles

Question 2

The semi permanent high pressure systems can be found -

Answer 2

Between the Hadley cell and the ferrel cell(30 latitude), and the poles.

Question 3

Where are the doldrums and horse latitudes found(and the (principle)?

Answer 3

Doldrums(areas of little or no wind) is found on the equator between the southern and northern hemisphere Hadley cells. both sides of the equator is dominated by low pressure.

Horse latitudes are found between the ferrel and Hadley cells

Question 4

Brief explanation of the various cells(3) accompanied by conditions(pressure):

Answer 4

The 3 cells are:

1. The Hadley cells
2. The polar cells
3. The Ferrel cells
4. The Hadley cells are formed due to the fact that the equator receives more radiation from the sun. As this area becomes progressively hotter the air will reduce in density and start to rise and ultimately cool with altitude, become heavier, and move away from the lower pressure(to the north or south depending on which side of the equator) and eventually this cold heavy air will sink and return to the low pressure which is its origin. Where the cold sinking air meets the surface of the earth(at 30 degrees), it will create a high pressure system called the subtropical high.
5. The polar cell is created due to cold air escaping and flowing towards the lower pressure to the South/North and, as it does so, it will progressively become hotter and start rise, cool due to the altitude, and sink back towards the poles.
6. Best way to describe the Ferrel cells is using a gear type analogy. The rising sinking air of the Hadley cells and the rising air of the Ferrel cells will induce the Ferrel cells to flow up from the ferrel cell, then flow to the South/North and downwards when met with the Hadley cell.

The combined effect of the cells will create a low pressure system at 60 degrees N/S and at the equator, a high pressure system at 30 degrees N/S and at the poles.