| Abstract from DBPedia | 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. Covering 14.2% of earth's land area, hot deserts are the second most common type of climate on earth after the polar climate. There are two variations of a desert climate according to the Köppen climate classification: a hot desert climate (BWh), and a cold desert climate (BWk). To delineate "hot desert climates" from "cold desert climates", there are three widely used isotherms: most commonly a mean annual temperature of 18 °C (64.4 °F), or sometimes the coldest month's mean temperature of 0 or −3 °C (32.0 or 26.6 °F), so that a location with a BW type climate with the appropriate temperature above whichever isotherm is being used is classified as "hot arid subtype" (BWh), and a location with the appropriate temperature below the given isotherm is classified as "cold arid subtype" (BWk). Most desert/arid climates receive between 25 and 200 mm (1 and 8 in) of rainfall annually, although some of the most consistently hot areas of Central Australia, the Sahel and Guajira Peninsula can be, due to extreme potential evapotranspiration, classed as arid with the annual rainfall as high as 430 millimetres or 17 inches.砂漠気候（さばくきこう）とはケッペンの気候区分における気候区のひとつで、乾燥帯に属する。記号はBWh,BWk。BWのWはドイツ語のWüste（砂漠）に由来する。 アリソフの気候区分では気候帯3-1.熱帯大陸性季節風気候と3-3.海洋性高気圧の東縁気候に対応する。 (Source: http://dbpedia.org/resource/Desert_climate) |
