Question

Consider the following statements about Tricellular Model:

1. It was given by William Ferrel.
2. It was based on Rotating Earth at the Equinox Position of the sun.
3. It consists of Thermally Direct Hadley & Ferrel Cells while Thermally indirect Polar Cell.

Which of the following statement(s) is/are true? 

1. 1 & 2 only
2. 1 & 3 only
3. 2 & 3 only
4. All of the above

Answer 1

Correct Answer - Option 1 : 1 & 2 only

The correct answer is option 1) i.e. 1 & 2 only

• The Tricellular Model was given by William Ferrel in 1856.
• It is based on 3 postulates-
  • Uniform Earth's Surface
  • Rotating Earth
  • Sun’s Equinox position
• It consists of 3 cells:
  • Hadley & Polar Cells formed directly by the effects of insolation and surface heating. They are called Thermally Direct Cells.
  • Ferrel Cell formed by the effects of Rotation & Coriolis Force and is powered by the other two cells. This is called a Thermally indirect cell.
  • This arrangement allows the Ferrel cell to transfer warm air from Hadley cell to higher latitudes and cold air to lower latitudes.