Coastal deserts are generally found on the west side of the continents for example Namib Atacama coa...........

Geography Geomorphology

Coastal deserts are generally found on the west side of the continents for example Namib, Atacama, coastal desert of Morocco or the desert of Baja California. In this context consider the following:

1) Gravitation of sun and moon

2) Global circulation of ocean currents

3) Sea floor spreading

4) Earth’s rotation

Which among the above would be sufficient to explain the above mentioned phenomena.

1 and 2

2, 3 and 4

2 and 4

1 and 3

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Explanation:

Coastal deserts generally are found on the western edges of continents near the Tropics of Cancer and Capricorn. They are affected by cold ocean currents that parallel the coast. Because local wind systems dominate the trade winds, these deserts are less stable than other deserts. Winter fogs, produced by upwelling cold currents, frequently blanket coastal deserts and block solar radiation. Coastal deserts are relatively complex because they are at the juncture of terrestrial, oceanic, and atmospheric systems. A coastal desert, the Atacama of South America, is the Earth's driest desert. In the Atacama, measurable rainfall--1 millimeter or more of rain--may occur as infrequently as once every 5-20 years.