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This rather depends on the latitude of your desert. A desert is defined as a region where little precipitation occurs, and as a result, living conditions are hostile to plant and animal life.

The Antarctic meets these conditions, and at the Pole, there is zero sunlight for several months of the year. In the Sahara by way of contrast, the Sun is essentially overhead every day of the year, with little variation. Both places are deserts.

In very crude terms, about 1kw/m2 is the quantity of power from the Sun; and measured normal to the rays.

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11y ago

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