why are most of the deserts in the western parts of the world?

Answer 1

This is not exactly right. We have deserts spread throughout the world: Gobi (Mongolia), Central Australia, Atacama (driest of them all; in Chile), Sahara (Northen Africa), Sonora desert (Mexico), Antarctica (coldest of them all), Pacific Ocean (wettest of them all).

Answer 2

Apart from the polar deserts, the major deserts of the world lie under the sub-tropical ridge in both the northern and southern hemispheres. There are no deserts worth talking about on the equator, it is too wet.The sub-tropical ridge is a belt of high pressure around the globe with descending air and very lttle rain.

Deserts tend to extend to the west coast of continents but not the east coast. There are two reasons for this. Firstly the circulation and currents in the oceans ensure there is upwelling of cold water on the western side of continents. The cold water produces less evaporation than warm water so there is less moisture in the air. Secondly, the air spiralling out from high pressure systems creates the trade winds blowing towards the equator. These winds are onshore along the east coast of continents in the summer bringing moist air off the ocean and cloud and rain to the east coasts.

Deserts are all round the globe at the same latitudes but they are on the western side of continents rather than the eastern side.

Answer 3

Western compared to what? Most of the deserts exist in Africa (Sahara and Kalahari), Australia (Great Sandy, Great Victoria, and Gibson), and Eurasia (Gobi and Takla Makan). By comparison, the western part of the world, is incredibly wet.

Answer 4

They're not at all. If you were to circle the world at the Equator I think you would find more deserts than arable land