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(sähĕl`), name applied to the semiarid region of Africa between the SaharaSahara
[Arab.,=desert], world's largest desert, c.3,500,000 sq mi (9,065,000 sq km), N Africa; the western part of a great arid zone that continues into SW Asia. Extending more than 3,000 mi (4,830 km), from the Atlantic Ocean to the Red Sea, the Sahara is bounded on the N by
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 to the north and the savannassavanna
or savannah
, tropical or subtropical grassland lying on the margin of the trade wind belts. The climate of a savanna is characterized by a rainy period during the summer when the area is covered by grasses, and by a dry winter when the grasses wither.
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 to the south, extending from Senegal and Mauritania on the west, through Mali, N Burkina Faso, Niger, N Nigeria, and Chad, to Sudan and Eritrea on the east. It has more rainfall (8–16 in./20–40 cm) and better grazing lands than the Sahara, but it is periodically afflicted by droughts that reduce its normally meager water supply and shatter its grazing and agricultural economy. A particularly prolonged and devastating drought from 1967 to 1974 contributed to the starvation of of hundreds of thousands of people, and forced the mass migration southward of many others. Since the 1970s, the effects of climate change have been more pronounced in the central Sahel than many other areas, with average temperatures warming about twice as fast.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the narrow (320–480 km) band of semideserts and desert savannas in Africa that are transitional between the deserts of the Sahara and the characteristic topography of the Sudan. The Sahel stretches for more than 4 million sq km from Mauritania and Senegal in the west through Mali, Upper Volta, and Niger to Chad and the borders of the Sudan. The area of the Sahel varies from year to year, depending on the amount of annual precipitation (100–350 mm) in the north to 300–600 mm in the south). Rain falls in the summer for a period ranging from two or three weeks to three months, but 80 or 90 percent of the moisture evaporates. The Sahel is periodically subject to disastrous droughts, when virtually the entire area becomes uninhabitable desert; this was the case in 1941 and 1942 and from 1972 to 1975.

The northern Sahel has mostly sparse semidesert vegetation, such as turf grasses, shrubs, and low-growing trees, especially acacias. This region is inhabited by nomadic herders who raise cattle, sheep, and goats. In the southern Sahel, sparse thorn forests, groves of palms (doom and palmyra), and baobabs predominate. Nomads and communities of settled land cultivators live in the area, and millet and peanuts are grown.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


A region having characteristics of a savanna or a steppe and bordering on a desert.
A strong dust-bearing desert wind in Morocco.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Calling the reports false, the actor said that there is no truth behind the reports "and no third person is the reason for Sahil and I to part ways," she tweeted on her official account.
Sahil also publishes an annual report which is referred to as 'Cruel Numbers' indicating how many cases of child abuse have occurred in the country.
While talking to Gulf News, Senior Programme Officer of Sahil, Sohail Ahmad said volunteers of Sahil compile reports and collect data every year from January 1 to December 31 and by end of March or beginning of April next year the report is shared.
Today, solar power plants operate in Azerbaijan's Gobustan and Samukh towns, Baku's Pirallahi, Surakhani and Sahil settlements.
During the cross fire, two suspects Amjad and Sahil were killed by their own friends' firing, he claimed.
Sahil SHO Shoaib Rehman said that the body wrapped in a bed sheet was recovered from a deserted location on Khayaban-i-Faisal.
According to reporter, Maqbool Sahil prolific Urdu and Pahari writer and broadcaster fell while walking in Lal Bazar area of Srinagar city.
Exercise Aff'aa Al Sahil is aimed on enhancing inter-operationibility and sharpening the tactical proficiency in countering Maritime Human trafficking, Piracy and Terrorism.
"Exercise Aff'aa Al Sahil is aimed at enhancing interoperability and sharpening the tactical proficiency in countering maritime human trafficking, piracy and terrorism.
Catalyst CEO Frieha Altaf has been appointed as a goodwill ambassador for Sahil. She earlier made headlines after (along with Nadia Jamil and Maheen Khan) speaking up about her history of sexual abuse on Twitter.
THREE RANCONTEURS: From left: Sahil Shah, Sapan Verma and Sorabh Pant.
Millennium Plaza Hotel Dubai appoints Sahil Thakur as assistant director of sales.