Content deleted Content added
Baqotun0023 (talk | contribs) |
|||
(13 intermediate revisions by 9 users not shown) | |||
Line 2:
[[File:BW climate.png|thumb|right|upright=1.6|Regions with desert climates
{{legend|#FE0000|[[#Hot desert climates|BWh]] (hot desert climates)}}
{{legend|#FE9695|[[#Cold desert climates|
The '''desert climate''' or '''arid climate''' (in the [[Köppen climate classification]] ''BWh'' and ''
There are two variations of a [[desert]] climate according to the [[Köppen climate classification]]: a hot desert climate (''BWh''), and a cold desert climate (''
Most desert/arid climates receive between {{cvt|25|and|200|mm|0}} of rainfall annually,<ref>{{cite book |title=Deserts and Desert Environments |first=Julie J. |last=Laity |publisher=John Wiley & Sons |year=2009 |page=7 |url=https://books.google.com/books?id=wtAbzLLTcwcC&pg=PR5 |isbn=978-1444300741 }}</ref><ref>{{Cite web |date=2017-11-01 |title=What is a Desert Climate? |url=https://www.worldatlas.com/articles/what-is-a-desert-climate.html |access-date=2022-04-23 |website=WorldAtlas |language=en-US}}</ref> 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 {{convert|430|mm|in|0|disp=or}}.
{{See also|Aridity index}}
==Precipitation==
Line 17 ⟶ 19:
==Hot desert climates==
{{redirect|BWh|other uses|Bwh (disambiguation)}}
{{climate chart|[[Sabha, Libya|Sabha]], Libya
|6|19|7
|8|21|0
Line 34 ⟶ 36:
|source=[http://www.worldweatheronline.com/Sabhah-weather-averages/Sabha/LY.aspx World Weather Online]
}}
Hot desert climates (''BWh'') are typically found under the [[subtropical ridge]] in the lower middle latitudes or the [[subtropics]], often between 20° and 33° north and south latitudes. In these locations, stable descending air and high pressure aloft clear clouds and create hot, arid conditions with intense sunshine. Hot desert climates are found across vast areas of [[North Africa]], [[
At the time of high sun (summer), scorching, desiccating heat prevails. Hot-month average temperatures are normally between {{cvt|29|and|35|C}}, and midday readings of {{convert|43–46|C|F}} are common. The world absolute heat records, over {{convert|50|C|F}}, are generally in the hot deserts, where the heat potential can be the highest on the planet. This includes the record of {{convert|56.7|C|F}} in [[Death Valley]], which is currently considered the [[highest temperature recorded on Earth]].<ref>{{Cite web |last1=Valley |first1=Mailing Address: P. O. Box 579 Death |last2=Us |first2=CA 92328 Phone: 760 786-3200 Contact |title=Weather - Death Valley National Park (U.S. National Park Service) |url=https://www.nps.gov/deva/learn/nature/weather-and-climate.htm |access-date=2022-04-23 |website=www.nps.gov |language=en}}</ref> Some deserts in the [[tropics]] consistently experience very high temperatures all year long, even during wintertime. These locations feature some of the highest annual average temperatures recorded on Earth, exceeding {{convert|30|C|F}}, up to nearly {{convert|35|C|F}} in [[Dallol, Ethiopia]]. This last feature is seen in sections of Africa and [[Arabia]]. During colder periods of the year, night-time temperatures can drop to freezing or below due to the exceptional radiation loss under the clear skies. However, very rarely do temperatures drop far below freezing under the hot subtype.
[[File:Koppen-
Hot desert climates can be found in the deserts of [[North Africa]] such as the wide [[Sahara Desert]], the [[Libyan Desert]] or the [[Nubian Desert]]; deserts of the [[Horn of Africa]] such as the [[Danakil Desert]] or the [[Grand Bara|Grand Bara Desert]]; deserts of [[Southern Africa]] such as the [[Namib Desert]] or the [[Kalahari Desert]]; deserts of [[
[[File:Desierto del Sahara.jpg|thumb|Sahara Desert in Morocco.]]
Line 44 ⟶ 46:
==Cold desert climates==
{{Redirect|
{{climate chart
|
|-14.4|-2.0|9.5
|-11.0|1.5|8.1
Line 63 ⟶ 65:
|units = metric
|source = <ref>{{Cite web |url=http://www.imd.gov.in/section/climate/extreme/leh2.htm |title=Leh |access-date=2017-08-16 |archive-url=https://web.archive.org/web/20180225132218/http://www.imd.gov.in/section/climate/extreme/leh2.htm |archive-date=2018-02-25 |url-status=dead }}</ref>}}
[[File:Koppen-
Cold desert climates (''
[[File:Atacama Desert between Antofagasta and Taltal.jpg|thumb|Atacama Desert in Chile.]]
[[File:Gobi, krajobraz pustyni (25).jpg|thumb|Gobi Desert in Mongolia]]
Cold desert climates are typically located in temperate zones in the 30s and 40s latitudes, usually in the leeward [[rain shadow]] of high mountains, which restricts precipitation from the westerly winds. An example of this is the [[Patagonian Desert]] in Argentina bounded by the [[Andes|Andes ranges]] to its west. In the case of Central Asia, mountains restrict precipitation from the [[East Asian monsoon|eastern monsoon]]. The [[Kyzyl Kum]], [[Taklamakan Desert|Taklamakan]] and [[Cold Desert, Skardu|Katpana Desert]] deserts of [[Central Asia]] are other major examples of ''BWk'' climates. The [[Ladakh]] region, and the city of [[Leh]] in the [[Great Himalayas]] in India also have a cold desert climate. In North America, the cold desert climate occurs in the drier parts of the [[Great Basin Desert]] and the [[Bighorn Basin]] in [[Big Horn County, Wyoming|Big Horn]] and [[Washakie County, Wyoming|Washakie County]] in [[list of counties in Wyoming|Wyoming]]. The [[Hautes Plaines]], located in the northeastern section of [[Morocco]] and in [[Algeria]] is another major example of a cold desert climate. In [[Europe]], this climate can only be found in some inland parts of southeastern Spain, such as in [[Lorca, Spain|Lorca]].<ref>{{Cite web |last=Meteorología |first=Agencia Estatal de |title=Valores climatológicos normales - Agencia Estatal de Meteorología - AEMET. Gobierno de España |url=https://www.aemet.es/es/serviciosclimaticos/datosclimatologicos/valoresclimatologicos |access-date=2024-01-08 |website=www.aemet.es |language=es}}</ref><ref>{{Cite web |title=Evolucion de los climas de Koppen en España: 1951-2020 |url=https://www.aemet.es/documentos/es/conocermas/recursos_en_linea/publicaciones_y_estudios/publicaciones/NT_37_AEMET/NT_37_AEMET.pdf |access-date=2024-01-08 |website=[[Agencia Estatal de Meteorologia]]}}</ref>
Arctic and Antarctic regions also receive very little precipitation during the year, owing to the exceptionally cold dry air freezing most precipitation; however, both of them are generally classified as having [[polar climate]]s because they have average summer temperatures below {{convert|10|°C|0}} even if they have such desert-like features as intermittent streams, hypersaline lakes, and extremely barren terrain in unglaciated areas such as the [[McMurdo Dry Valleys]] of Antarctica.<ref>{{Cite web | url=https://sand-boarding.com/cold-deserts/ |title = Cold and Polar Deserts| date=3 January 2022 |access-date=2022-03-03}}</ref><ref>{{Cite web |title=Why are polar regions not considered deserts? – SidmartinBio |url=https://www.sidmartinbio.org/why-are-polar-regions-not-considered-deserts/ |access-date=2022-04-23 |website=www.sidmartinbio.org}}</ref>
|