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The desert climate or arid climate (in the Köppen climate classification BWh and BWk) is a dry climate sub-type in which there is a severe excess of evaporation over precipitation. The typically bald, rocky, or sandy surfaces in desert climates are dry and hold little moisture, quickly evaporating the already little rainfall they receive.
Snow is a rare occurrence in Johannesburg; it fell in May 1956, August 1962, June 1964, September 1981, August 2006, and on 27 June 2007, [38] accumulating up to 10 centimetres (3.9 in) in the southern suburbs. Additionally, snow regularly falls in the Atlas Mountains in the Maghreb, as well as the Mediterranean regions and Sinai peninsula of ...
Polar deserts are a particular class of cold desert. The air is very cold and carries little moisture so little precipitation occurs and what does fall, usually snow, is carried along in the often strong wind and may form blizzards, drifts and dunes similar to those caused by dust and sand in other desert regions.
The continent is also extremely dry (it is a desert [1]), averaging 166 mm (6.5 in) of precipitation per year. Snow rarely melts on most parts of the continent, and, after being compressed, becomes the glacier ice that makes up the ice sheet. Weather fronts rarely penetrate far into the continent, because of the katabatic winds.
Thus, in the central and the southern parts, daytime temperatures are very hot, especially in summers when average high temperatures can exceed 54 °C (129 °F), as in Aswan, Luxor, Asyut or Sohag which are located in the deserts of Egypt. Although the mild weather in the winter days the temperature decreases to be very cold at nighttime and ...
On Jan. 7, the Sahara desert witnessed an extremely rare snowstorm — just the third of its kind in 37 years — breaking a long snow drought in Algeria.
Cold snow reflects between 70% and 90% of the solar radiation that reaches it, [2] and snow covers most of the Arctic land and ice surface in winter. These factors result in a negligible input of solar energy to the Arctic in winter; the only things keeping the Arctic from continuously cooling all winter are the transport of warmer air and ...
More rarely, snow can fall on the nearby Porongurup Range. Snow outside these areas is a major event; it usually occurs in hilly areas of south-western Australia. The most widespread low-level snow occurred on 26 June 1956 when snow was reported in the Perth Hills, as far north as Wongan Hills and as far east as Salmon Gums. However, even in ...