Or, more precisely, the distance between the ground and the center of the eyeball. But assuming the earth were a perfect sphere: Average radius of earth = 6,372,797 meters Draw a circle representing the earth.
As a result, the Namib receives an average annual rainfall of only 2.5cm (1in). The sand dunes of the desert receive moisture from the atmosphere, in the form of fog. Every 10 days or so, a dense night fog rolls inland for a distance of 80km (50mi) or more, shrouding the coast and much of the desert. The fog condenses into a thick dew, creating an annual average of 4cm (1.6in) of moisture. Temperature in the Namib reaches a high of 66Â°C (150Â°F) in the middle of the day. Gravel and rock plains extend north from the Kuiseb River. The treacherous coastal waters of this region regularly snare ships, such as the Dunedin Star (1942) and the Shawnee (1976), and cast them up on the shifting sands.
In the case of hot deserts the temperature range from highs of 43.5 to 49Â° C to minimum temperatures down to -18Â° C. The hottest ever recorded was 57.8Â° C. Cold deserts like the Antarctic have temperature ranges from an average of -70 Co during the winter months and -35 Co in the warmer months.The lowest temperature was -89.6 Co was recorded on 21st July, 1983, at Vostok Station.he average temperatures of the cold desert in winter ranges from -2 to 4Â° C, whilst in the summer it ranges from 21 to 26Â° C. Taking Antarctica (the most extreme cold desert) as an example, its lowestt temperature was â89.2 Â°C and its highest temperature was14.6Â°C.