Why Do Earth Rotates

1. If the earth rotates in the opposite direction to that of today, with the aid of diagrams, describe the likely characteristics of the global atmospheric circulations.

The sun heats the atmosphere more at the equator than it does at the poles. There would initially be a surplus of heat at the equator and a deficit at the poles which would be evenly distributed through oceans and the atmospheric circulation such as in Figure 1. This is due to the density differences between air masses because of the uneven heating on earth from the sun. The global atmospheric and ocean circulation will change but it would still distribute the heat between the poles and tropics as it does now.
But because the Earth rotates, it causes winds to curve due to the Coriolis Effect. This breaks the two large atmospheric air circulations into six smaller cells shown in Figure 2. If earth rotated in the opposite direction, east to west, the world’s climate would be very different. The sun would rise in the west and set in the morning
This is a due to the Coriolis Effect, which, if Earth’s rotation is reversed, this would change direction of the winds in the opposite direction as shown in Figure 3, with the Earth’s rotation in the opposite direction. The winds would deflect to the left in the Northern Hemisphere and right in the Southern Hemisphere. Therefore the prevailing winds would occur in the opposite direction and the winds and ocean gyres would be reversed. Therefore earth would have a very different climate. The Trade Winds would blow from the west to the east as well as the Polar Winds and the Westerly winds would become the Easterlies seen in Figure 3. The Trade Winds would affect the distribution of precipitation across earth, influencing the position of large parts of deserts and rainforests. It would also interact with the El Nino and La Nina