Sahel

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Sahel

(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.

Sahel

 

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.

sahel

[sə′hel]
(ecology)
A region having characteristics of a savanna or a steppe and bordering on a desert.
(meteorology)
A strong dust-bearing desert wind in Morocco.
References in periodicals archive ?
Exercise Aff'aa Al Sahil is aimed at enhancing interoperability and sharpening the tactical proficiency in countering Maritime human trafficking, piracy and terrorism.
Exercise AFF'AA - Al Sahil is a bilateral exercise being jointly conducted by the two countries since 2011.
Besides exercise Aff'aa Al Sahil at Karachi, Exercise Dera Al Sahil between PN Marines and RSNF Marines is also in progress in Saudi Arabia.
Exercise Aff'aa Al Sahil is aimed on enhancing interoperability and sharpening the tactical proficiency in countering Maritime Human trafficking, Piracy and Terrorism.
Exercise Aff'aa Al Sahil is aimed on enhancing inter-operationibility 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.
New Delhi [India], Dec 13 ( ANI ): FC Pune City on Wednesday called-up two of its reserve players, forward Gani Ahmed Nigam and defender Sahil Panwar, into the main squad for the Hero Indian Super League (ISL).
Tomorrow evening, East India Comedy's Sorabh Pant, Sahil Shah and Sapan Verma will be treating Doha, for the first time, to their annual laughathon of a ritual of roasting the year's worst performances in Bollywood.
Sahil Thakur will be responsible for strengthening the property's business ties with existing clients and stakeholders in addition to managing all aspects of sales, preparing sales budgets and business plans and identifying opportunities to drive revenue.
Sahil gE-venlik ege deniz bE[micro]lge komutanligi satinalma komisyon baskanligi turan mah.
Bank Muscat marked a grand celebration under the auspices of H E Sayyid Ahmed bin Hilal al Busaidi, Wali of Muttrah, to hand over a green playground developed as part of the Green Sports initiative to Sahil Oman Team in Darsait.
Bobby (Vidya's character) 
is representative of the enormous amount of aspiration shared 
by women from different walks 
of life," added producer Sahil Sangha.