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The Sahara (/ s ə ˈ h ɑːr ə /, / s ə ˈ h ær ə /) is a desert spanning across North Africa.With an area of 9,200,000 square kilometres (3,600,000 sq mi), it is the largest hot desert in the world and the third-largest desert overall, smaller only than the deserts of Antarctica and the northern Arctic.
Set out to cross the Sahara but was murdered after leaving Murzuk. Gustav Nachtigal (1834–1885) [1870-74]. Travelled to Fezzan and explored the Tibesti. Crossed the Sahara to Lake Chad and continued to Darfur and Kordofan. Paul-Xavier Flatters (1832–1881) [1880-81]. Explored the Sahara north east of the Hoggar mountains, as a colonel in the ...
Hadley cell above Sahara desert. Another significant determinant of tropical desert climate are Hadley cells. Hadley cells concentrate all precipitations in the hotter humid lower pressure equator, leaving colder higher pressure deserts with no precipitation. [2]
The Sahel's climate is similar to, but less extreme than, the climate of the Sahara desert located just to the north. ... National Geographic. Vol. 172, ...
The Sahara Desert features a hot desert climate (Köppen climate classification BWh).The Sahara Desert is one of the driest and hottest regions of the world, with a mean temperature sometimes over 30 °C (86 °F) and the average high temperatures in summer are over 40 °C (104 °F) for months at a time, and can even soar to 47 °C (117 °F).
A satellite image of the Sahara, the world's largest hot desert and third largest desert after Antarctica and the Arctic. Desert greening is the process of afforestation or revegetation of deserts for ecological restoration (biodiversity), sustainable farming and forestry, but also for reclamation of natural water systems and other ecological systems that support life.
The precession of the equinoxes is regarded as the most important orbital parameter in the formation of the "green Sahara" and "desert Sahara" cycle. A January 2019 MIT paper in Science Advances shows a cycle from wet to dry approximately every 20,000 years. [3] [4]
The Gobero archaeological site, dating to approximately 8000 BCE, is the oldest known graveyard in the Sahara Desert. The site contains important information for archaeologists on how early humans adapted to a constantly changing environment. Gobero is located in the Ténéré desert of Niger, and is named after the Tuareg name for