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  2. Erg (landform) - Wikipedia

    en.wikipedia.org/wiki/Erg_(landform)

    The largest hot desert in the world, the Sahara, covers 9 million square kilometres (3.5 × 10 ^ 6 sq mi) and contains several ergs, such as the Chech Erg and the Issaouane Erg in Algeria. [5] Approximately 85% of all the Earth's mobile sand is found in ergs that are greater than 32,000 km 2 (12,355 sq mi), [ 6 ] the largest being the Rub' al ...

  3. Desert ecology - Wikipedia

    en.wikipedia.org/wiki/Desert_ecology

    Deserts occupy one-fifth of the Earth's land surface and occur in two belts: between 15° and 35° latitude in both the southern and northern hemispheres. [2] These bands are associated with the high solar intensities that all areas in the tropics receive, and with the dry air brought down by the descending arms of both the Hadley and Ferell ...

  4. Desert climate - Wikipedia

    en.wikipedia.org/wiki/Desert_climate

    Cold desert climates (BWk) usually feature hot (or warm in a few instances), dry summers, though summers are not typically as hot as hot desert climates. Unlike hot desert climates, cold desert climates tend to feature cold, dry winters. Snow tends to be rare in regions with this climate. The Gobi Desert in northern China and Mongolia is one ...

  5. Scientists reveal secrets of Earth's magnificent desert star ...

    www.aol.com/news/scientists-reveal-secrets-earth...

    They are among the wonders of our deserts: star dunes, the vaguely pyramid-shaped sand formations up to about 1,000 feet (300 meters) tall with arms stretching out from a central peak to give them ...

  6. Climate of Africa - Wikipedia

    en.wikipedia.org/wiki/Climate_of_Africa

    The Sahara Desert in North Africa is the largest hot desert in the world and is one of the hottest, driest and sunniest places on Earth. Located just south of the Sahara is a narrow semi-desert steppe (a semi-arid region) called the Sahel , while Africa's most southern areas contain both savanna plains , and its central portion, including the ...

  7. Sahara - Wikipedia

    en.wikipedia.org/wiki/Sahara

    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.

  8. The Sahara Desert flooded for the first time in decades. Here ...

    www.aol.com/striking-images-show-rare-floods...

    (CNN) — Striking images from the Sahara Desert show large lakes etched into rolling sand dunes after one of the most arid, barren places in the world was hit with its first floods in decades ...

  9. Desert - Wikipedia

    en.wikipedia.org/wiki/Desert

    Despite its low surface atmospheric pressure (only 1/100 of that of Earth), the patterns of atmospheric circulation on Mars have formed a sea of circumpolar sand more than 5 million km 2 (1.9 million sq mi) in the area, larger than most deserts on Earth. The Martian deserts consist of half-moon dunes in flat areas near the permanent polar ice ...