114-629: Kel Gres is a tribal confederation of Tuareg clans (or " Drum-groups "). In the modern era, they have mostly lived in south central Niger , although they are known to have inhabited the Aïr Mountains prior to the 17th century. As pastoralists, the Kel Gress also have a tradition seasonal transhumance cycle which takes them far from their more settled communities in the Zinder and Tahoua Regions . Portions of this article were translated from
228-771: A French expedition led by Paul Flatters in 1881. Over decades of fighting, Tuareg broadswords were no match for the firearms of French troops. After numerous massacres on both sides, the Tuareg were defeated and forced to sign treaties in Mali in 1905 and Niger in 1917. In southern Algeria, the French met some of the strongest resistance from the Ahaggar Tuareg. Their Amenokal chief Moussa ag Amastan fought numerous battles, but eventually Tuareg territories were subdued under French governance. French colonial administration of
342-406: A blend of pre-Islamic and Islamic practices. Patrilineal Muslim values are believed to have been superimposed upon the Tuareg's traditional matrilineal society. Other apparently newer customs include close-cousin endogamous marriages and polygyny in conformity with Islamic tenets. Polygyny, which has been witnessed among Tuareg chiefs and Islamic scholars, is in turn thought to have been contrary to
456-426: A consequence, the weather tends to be sunny, dry and stable with a minimal chance of rainfall. Subsiding, diverging, dry air masses associated with subtropical high-pressure systems are extremely unfavorable for the development of convectional showers. The subtropical ridge is the predominant factor that explains the hot desert climate ( Köppen climate classification BWh ) of this vast region. The descending airflow
570-455: A distinct group known as izeggaghan (or hartani in Arabic). Their origins are unclear but they often speak both Tuareg dialects and Arabic, though a few communities are Songhay speakers. Traditionally, these local peasants were subservient to the warrior nobles who owned the oasis and the land. The peasants tilled these fields, whose output they gave to the nobles after keeping a fifth part of
684-519: A healthy adult. The Saharan silver ant is unique in that due to the extreme high temperatures of their habitat, and the threat of predators, the ants are active outside their nest for only about ten minutes per day. Dromedary camels and goats are the domesticated animals most commonly found in the Sahara. Because of its qualities of endurance and speed, the dromedary is the favourite animal used by nomads . Human activities are more likely to affect
798-490: A mix of admiration and distrust. According to Rasmussen, the Tuareg castes are not only hierarchical, as each caste differs in mutual perception, food and eating behaviors. For example, she relates an explanation by a smith on why there is endogamy among Tuareg castes in Niger. The smith explained, "nobles are like rice, smiths are like millet, slaves are like corn". The people who farm oases in some Tuareg-dominated areas form
912-448: A noble, forms a confederation whose chieftain, the amănokal , is elected from among the nobles by the tribal chiefs. The chieftain is the overlord during times of war, and receives tribute and taxes from tribes as a sign of their submission to his authority. The vassal-herdsmen are the second free stratum within Tuareg society, occupying a position just below that of the nobles. They are known as ímɣad ( Imghad , singular Amghid ) in
1026-569: A summer rainy season that extends across Africa from east to west. The southern limit of the Sahara is indicated botanically by the southern limit of Cornulaca monacantha (a drought-tolerant member of the Chenopodiaceae ), or northern limit of Cenchrus biflorus , a grass typical of the Sahel. According to climatic criteria, the southern limit of the Sahara corresponds to the 150 mm (5.9 in) isohyet of annual precipitation (this
1140-542: A surface feature of Earth, with near-current technology. The Sahara is mainly rocky hamada (stone plateaus); ergs (sand seas – large areas covered with sand dunes ) form only a minor part, contrary to common misconception , but many of the sand dunes are over 180 metres (590 ft) high. Wind or rare rainfall shape the desert features: sand dunes, dune fields, sand seas, stone plateaus, gravel plains ( reg ), dry valleys ( wadi ), dry lakes ( oued ), and salt flats ( shatt or chott ). Unusual landforms include
1254-557: Is a long-term average, since precipitation varies annually). Important cities located in the Sahara include Nouakchott , the capital of Mauritania; Tamanrasset , Ouargla , Béchar , Hassi Messaoud , Ghardaïa , and El Oued in Algeria; Timbuktu in Mali; Agadez in Niger; Ghat in Libya; and Faya-Largeau in Chad. The Sahara is the world's largest hot desert . It is located in
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#17327767451031368-422: Is a north African gazelle that can also go for a long time without water. Other notable gazelles include the rhim gazelle and dama gazelle . The Saharan cheetah ( northwest African cheetah ) lives in Algeria, Togo , Niger, Mali, Benin , and Burkina Faso . There remain fewer than 250 mature cheetahs, which are very cautious, fleeing any human presence. The cheetah avoids the sun from April to October, seeking
1482-629: Is a prehistoric industry, or domain, that existed between 10,000 and 8,000 years ago in the Sahara, during the Neolithic Subpluvial . Human remains from this culture were found in 2000 at a site known as Gobero , located in Niger in the Ténéré Desert . The site is known as the largest and earliest grave of Stone Age people in the Sahara. The Kiffians were skilled hunters . Bones of many large savannah animals that were discovered in
1596-465: Is associated with high rates of wind-blown mineral dust, and these dust levels are found as expected in marine cores from the north tropical Atlantic. But around 12,500 BCE the amount of dust in the cores in the Bølling / Allerød phase suddenly plummets and shows a period of much wetter conditions in the Sahara, indicating a Dansgaard-Oeschger (DO) event (a sudden warming followed by a slower cooling of
1710-403: Is estimated to include five hundred species of plants, which is extremely low considering the huge extent of the area. Plants such as acacia trees, palms, succulents, spiny shrubs, and grasses have adapted to the arid conditions, by growing lower to avoid water loss by strong winds, by storing water in their thick stems to use it in dry periods, by having long roots that travel horizontally to reach
1824-519: Is exacerbated by over-exploitation of resources including firewood. This has pushed some Tuareg to experiment with farming; some have been forced to abandon herding and seek jobs in towns and cities. Following the independence of Mali, a Tuareg uprising broke out in the Adrar N'Fughas mountains in the 1960s, joined by Tuareg groups from the Adrar des Iforas in northeastern Mali. The Malian Army suppressed
1938-511: Is inherited, with the descendants of the slaves known as irewelen . They often live in communities separate from other castes. The Ikelan's Nilotic extraction is denoted via the Ahaggar Berber word Ibenheren (sing. Ébenher ). 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
2052-470: Is that Tuareg is derived from Tuwariq , the plural of the Arabic exonym Tariqi . The term for a Tuareg man is Amajagh (variants: Amashegh , Amahagh ), the term for a woman Tamajaq (variants: Tamasheq , Tamahaq , Timajaghen ). Spellings of the appellation vary by Tuareg dialect. They all reflect the same linguistic root, expressing the notion of "freemen". As such, the endonym strictly refers only to
2166-407: 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 . The name "Sahara" is derived from Arabic : صَحَارَى , romanized : ṣaḥārā /sˤaħaːraː/ , a broken plural form of ṣaḥrā' ( صَحْرَاء /sˤaħraːʔ/ ), meaning "desert". The desert covers much of North Africa , excluding
2280-667: Is the strongest and the most effective over the eastern part of the Great Desert, in the Libyan Desert: this is the sunniest, driest and the most nearly "rainless" place on the planet, rivaling the Atacama Desert , lying in Chile and Peru . The rainfall inhibition and the dissipation of cloud cover are most accentuated over the eastern section of the Sahara rather than the western. The prevailing air mass lying above
2394-422: Is very unreliable and erratic in the Sahara as it may vary considerably year by year. In full contrast to the negligible annual rainfall amounts, the annual rates of potential evaporation are extraordinarily high, roughly ranging from 2,500 millimetres (100 in) per year to more than 6,000 millimetres (240 in) per year in the whole desert. Nowhere else on Earth has air been found as dry and evaporative as in
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#17327767451032508-492: The Adrar of Mauritania and a value of 75 °C (167 °F) has been measured in Borkou , northern Chad. Due to lack of cloud cover and very low humidity, the desert usually has high diurnal temperature variations between days and nights. However, it is a myth that the nights are especially cold after extremely hot days in the Sahara. On average, nighttime temperatures tend to be 13–20 °C (23–36 °F) cooler than in
2622-488: The Algerian Desert called Bou Bernous , at an elevation of 378 metres (1,240 ft) above sea level, and only Death Valley, California rivals it. Other hot spots in Algeria such as Adrar , Timimoun , In Salah , Ouallene , Aoulef , Reggane with an elevation between 200 and 400 metres (660 and 1,310 ft) above sea level get slightly lower summer average highs, around 46 °C (114.8 °F) during
2736-765: The Late Pleistocene Iberomaurusians , early Holocene Capsians , and mid-Holocene Mechta groups, whereas the Tenerian crania are more like those of Mediterranean groups. Graves show that the Tenerians observed spiritual traditions, as they were buried with artifacts such as jewelry made of hippo tusks and clay pots. The most interesting find is a triple burial, dated to 5300 years ago, of an adult female and two children, estimated through their teeth as being five and eight years old, hugging each other. Pollen residue indicates they were buried on
2850-848: The Muslim conquest of the Maghreb . Some researchers have tied the origin of the Tuareg ethnicity with the fall of the Garamantes who inhabited the Fezzan (Libya) from the 1st millennium BC to the 5th century AD. Tuareg people are credited with spreading Islam in North Africa and the adjacent Sahel region. Tuareg social structure has traditionally included clan membership, social status and caste hierarchies within each political confederation. The Tuareg have controlled several trans-Saharan trade routes and have been an important party to
2964-700: The Niger River valley and the Sudan region of sub-Saharan Africa . The Sahara can be divided into several regions, including the western Sahara, the central Ahaggar Mountains , the Tibesti Mountains , the Aïr Mountains , the Ténéré desert, and the Libyan Desert . For several hundred thousand years, the Sahara has alternated between desert and savanna grassland in a 20,000-year cycle caused by
3078-694: The Richat Structure in Mauritania. Several deeply dissected mountains, many volcanic, rise from the desert, including the Aïr Mountains , Ahaggar Mountains , Saharan Atlas , Tibesti Mountains , Adrar des Iforas , and the Red Sea Hills . The highest peak in the Sahara is Emi Koussi , a shield volcano in the Tibesti range of northern Chad. The central Sahara is hyperarid , with sparse vegetation. The northern and southern reaches of
3192-400: The amghar . A series of tawsheten (plural of tawshet ) may bond together under an Amenokal , forming a Kel clan confederation. Tuareg self-identification is related only to their specific Kel , which means "those of". For example, Kel Dinnig (those of the east), Kel Ataram (those of the west). The position of amghar is hereditary through a matrilineal principle; it is usual for
3306-474: The horse latitudes under the subtropical ridge , a significant belt of semi-permanent subtropical warm-core high pressure where the air from the upper troposphere usually descends, warming and drying the lower troposphere and preventing cloud formation. The permanent absence of clouds allows unhindered light and thermal radiation. The stability of the atmosphere above the desert prevents any convective overturning, thus making rainfall virtually non-existent. As
3420-477: The jedar sepulchres, were erected for religious and funerary practices. In 1926, one such tomb was discovered south of Casablanca . The monument was engraved with funerary inscriptions in the ancient Libyco-Berber writing script known as Tifinagh , which the Tuareg still use. During the medieval period, the Tuareg adopted Islam after its arrival with the Umayyad Caliphate in the 7th century. In
3534-514: The precession of Earth's axis (about 26,000 years) as it rotates around the Sun, which changes the location of the North African monsoon . The Sahara covers large parts of Algeria , Chad , Egypt , Libya , Mali , Mauritania , Niger , Western Sahara and Sudan , and parts of southern Morocco and Tunisia . It covers 9 million square kilometres (3,500,000 sq mi), 31% of
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3648-478: The 12th century. It flourished under the protection and rule of a Tuareg confederation. However, modern scholars believe that there is insufficient evidence to pinpoint the exact time of origin and founders of Timbuktu, although it is archeologically clear that the city originated from local trade between the Middle Niger Delta, on the one hand, and between the pastoralists of the Sahara, long before
3762-553: The 16th century, under the tutelage of El Maghili, the Tuareg embraced the Maliki school of Sunni Islam, which they now primarily follow. The Tuareg helped spread Islam further into the Western Sudan . While Islam is the religion of the contemporary Tuareg, historical documents suggest that they initially resisted Islamization efforts in their traditional strongholds. According to the anthropologist Susan Rasmussen, after
3876-617: The 1995 and 1996 agreements. As of 2004, sporadic fighting continued in Niger between government forces and Tuareg rebels. In 2007, a new surge in violence occurred. The development of Berberism in North Africa in the 1990s fostered a Tuareg ethnic revival. Since 1998, three different flags have been designed to represent the Tuareg. In Niger, the Tuareg people remain socially and economically marginalized, remaining poor and unrepresented in Niger's central government. On 21 March 2021, IS-GS militants attacked several villages around Tillia , Niger, killing 141 people. The main victims of
3990-509: The African continent. If all areas with a mean annual precipitation of less than 250 mm (9.8 in) were included, the Sahara would be 11 million square kilometres (4,200,000 sq mi). It is one of three distinct physiographic provinces of the African massive physiographic division . The Sahara is so large and bright that, in theory, it could be detected from other stars as
4104-417: The African humid period. At its largest extent, sometime before 5000 BCE, Lake Mega-Chad was the largest of four Saharan paleolakes, and is estimated to have covered an area of 350,000 km . The Sahara pump theory describes this cycle. During periods of a wet or " Green Sahara ", the Sahara becomes a savanna grassland and various flora and fauna become more common. Following inter-pluvial arid periods,
4218-584: The French language Misplaced Pages article fr:Kel Gress , 2008-08-26. Tuareg people The Tuareg people ( / ˈ t w ɑːr ɛ ɡ / ; also spelled Twareg or Touareg ; endonym : Imuhaɣ / Imušaɣ / Imašeɣăn / Imajeɣăn ) are a large Berber ethnic group, traditionally nomadic pastoralists , who principally inhabit the Sahara in a vast area stretching from far southwestern Libya to southern Algeria , Niger , Mali , and Burkina Faso , as far as northern Nigeria . The Tuareg speak languages of
4332-412: The Great Desert the hottest large region in the world, and the hottest place on Earth during summer in some spots. The average high temperature exceeds 38 to 40 °C (100.4 to 104.0 °F) during the hottest month nearly everywhere in the desert except at very high altitudes. The world's highest officially recorded average daily high temperature was 47 °C (116.6 °F) in a remote desert town in
4446-486: The Intertropical Convergence Zone from the south and the annual average rainfall ranges from 100 millimetres (4 in) to 250 millimetres (10 in). For example, Timbuktu, Mali and Agadez , Niger are found in this zone. The vast central hyper-arid core of the desert is virtually never affected by northerly or southerly atmospheric disturbances and permanently remains under the influence of
4560-523: The Kiffian culture do not exist after 8,000 years ago, as the Sahara went through a dry period for the next thousand years. After this time, the Tenerian culture colonized the area. Gobero was discovered in 2000 during an archaeological expedition led by Paul Sereno , which sought dinosaur remains. Two distinct prehistoric cultures were discovered at the site: the early Holocene Kiffian culture, and
4674-508: The Lemta and the Zarawa, along with other fellow pastoral Berbers. Further invasions of Banu Hilal and Banu Sulaym Arab tribes into Tuareg regions in the 11th century moved the Tuareg south into seven clans, which the oral tradition of Tuaregs claims are descendants of the same mother. Each Tuareg clan ( tawshet ) is made up of family groups constituting a tribe, each led by its chief,
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4788-462: The Sahara (birds in particular) such as African silverbill and black-faced firefinch , among others. There are also small desert crocodiles in Mauritania and the Ennedi Plateau of Chad. The deathstalker scorpion can be 10 cm (3.9 in) long. Its venom contains large amounts of agitoxin and scyllatoxin and is very dangerous; however, a sting from this scorpion rarely kills
4902-531: The Sahara area then reverts to desert conditions and the flora and fauna are forced to retreat northwards to the Atlas Mountains , southwards into West Africa , or eastwards into the Nile Valley . This separates populations of some of the species in areas with different climates , forcing them to adapt , possibly giving rise to allopatric speciation . It is also proposed that humans accelerated
5016-528: The Sahara is strongly influenced by the North Atlantic Oscillation (NAO), with warmer winter temperatures during negative NAO events and cooler winters with more frosts when the NAO is positive. This is because the weaker clockwise flow around the eastern side of the subtropical anticyclone during negative NAO winters, although too dry to produce more than negligible precipitation, does reduce
5130-504: The Sahara is the continental tropical (cT) air mass, which is hot and dry. Hot, dry air masses primarily form over the North-African desert from the heating of the vast continental land area, and it affects the whole desert during most of the year. Because of this extreme heating process, a thermal low is usually noticed near the surface, and is the strongest and the most developed during the summertime. The Sahara High represents
5244-638: The Sahara region. However, at least two instances of snowfall have been recorded in Sahara, in February 1979 and December 2016, both in the town of Ain Sefra . One theory for the formation of the Sahara is that the monsoon in Northern Africa was weakened because of glaciation during the Quaternary period, starting two or three million years ago. Another theory is that the monsoon was weakened when
5358-570: The Sahel between the 7th and 17th centuries. Adherence to the faith was initially centered around this caste, but later spread to the wider Tuareg community. The marabouts have traditionally been the judges ( qadi ) and religious leaders ( imam ) of a Tuareg community. According to anthropologist Jeffrey Heath, Tuareg artisans belong to separate endogamous castes known as the Inhăḍăn ( Inadan ). These have included blacksmith, jeweler, wood worker and leather artisan castes. They produced and repaired
5472-713: The Tassili n'Ajjer in southeast Algeria. Fossils of dinosaurs , including Afrovenator , Jobaria and Ouranosaurus , have also been found here. The modern Sahara, though, is not lush in vegetation, except in the Nile Valley, at a few oases , and in the northern highlands, where Mediterranean plants such as the olive tree are found to grow. Shifts in Earth's axis increased temperatures and decreased precipitation, which caused an abrupt beginning of North Africa desertification about 5,400 years ago. The Kiffian culture
5586-435: The Tuareg nobility , not the artisanal client castes and the slaves. Two other Tuareg self-designations are Kel Tamasheq , meaning "speakers of Tamasheq ", and Kel Tagelmust , meaning "veiled people" in allusion to the tagelmust garment that is traditionally worn by Tuareg men. The English exonym "Blue People" is similarly derived from the indigo color of the tagelmust veils and other clothing, which sometimes stains
5700-500: The Tuareg had adopted the religion, they were reputedly lax in their prayers and observances of other Muslim precepts. Some of their ancient beliefs still exist today subtly within their culture and tradition, such as elements of pre-Islamic cosmology and rituals, particularly among Tuareg women, or the widespread "cult of the dead", which is a form of ancestor veneration . For example, Tuareg religious ceremonies contain allusions to matrilineal spirits, as well as to fertility, menstruation,
5814-432: The Tuareg language. Although the vassals were free, they did not own camels but instead kept donkeys and herds of goats, sheep and oxen. They pastured and tended their own herds as well those owned by the nobles of the confederation. The vassal strata have traditionally paid an annual tiwse , or tribute to the nobles as a part of their status obligations, and hosted any noble who was traveling through their territory. In
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#17327767451035928-728: The Tuareg moved southward from the Tafilalt region into the Sahel under the Tuareg founding queen Tin Hinan , who is believed to have lived between the 4th and 5th centuries. The matriarch's 1,500-year-old monumental Tin Hinan tomb is located in the Sahara at Abalessa in the Hoggar Mountains of southern Algeria. Vestiges of an inscription in Tifinagh , the Tuareg's traditional Libyco-Berber writing script, have been found on one of
6042-414: The Tuareg was largely based on supporting the existing social hierarchy. The French concluded that Tuareg rebellions were largely the result of reform policies that undermined the traditional chiefs. The colonial authorities wished to create a protectorate operating, ideally, through single chieftains who ruled under French sovereignty, but were autonomous within their territories. Thus French rule, relying on
6156-443: The Tuareg, who kept their oral traditions . They are called Agguta by Tuareg, have been called upon to sing during ceremonies such as weddings or funerals. The origins of the artisanal castes are unclear. One theory posits a Jewish derivation, a proposal that Prasse calls "a much vexed question". Their association with fire, iron and precious metals and their reputation for being cunning tradesmen has led others to treat them with
6270-595: The amount of rainfall received – the Northern (Mediterranean), Central and Southern Zones. There are two transitional zones – the Mediterranean-Sahara transition and the Sahel transition zone. The Saharan flora comprises around 2800 species of vascular plants . Approximately a quarter of these are endemic . About half of these species are common to the flora of the Arabian deserts. The central Sahara
6384-550: The ancient Tethys Sea dried up during the Tortonian period around 7 million years ago. The climate of the Sahara has undergone enormous variations between wet and dry over the last few hundred thousand years, believed to be caused by long-term changes in the North African climate cycle that alters the path of the North African Monsoon – usually southward. The cycle is caused by a 41,000-year cycle in which
6498-458: The ancient sepulchre's walls. External accounts of interactions with the Tuareg are available from at least the 10th century onwards. Ibn Hawkal (10th century), El-Bekri (11th century), Edrisi (12th century), Ibn Battutah (14th century), and Leo Africanus (16th century) all documented the Tuareg in some form, usually as Mulatthamin or "the veiled ones". Of the early historians, fourteenth century scholar Ibn Khaldûn probably wrote some of
6612-421: The atmospheric circulation itself, the desert is made even drier by its geographical configuration and location. Indeed, the extreme aridity of the Sahara is not only explained by the subtropical high pressure: the Atlas Mountains of Algeria, Morocco and Tunisia also help to enhance the aridity of the northern part of the desert. These major mountain ranges act as a barrier, causing a strong rain shadow effect on
6726-574: The chief of the confederation. Historically, there have been seven major confederations. In the mid-19th century, descriptions of the Tuareg and their way of life were made by the English traveller James Richardson in his journeys across the Libyan Sahara in 1845–1846. In the late 19th century, the Tuareg resisted the French colonial invasion of their central Saharan homelands and annihilated
6840-616: The climate). The moister Saharan conditions had begun about 12,500 BCE, with the extension of the ITCZ northward in the northern hemisphere summer, bringing moist wet conditions and a savanna climate to the Sahara, which (apart from a short dry spell associated with the Younger Dryas ) peaked during the Holocene thermal maximum climatic phase at 4000 BCE when mid-latitude temperatures seem to have been between 2 and 3 degrees warmer than in
6954-580: The conflicts in the Saharan region during the colonial and post-colonial eras. The origins and meanings of the name Tuareg have long been debated. It would appear that Twārəg is derived from the broken plural of Tārgi , a name whose former meaning was "inhabitant of Targa ", the Tuareg name of the Libyan region commonly known as Fezzan . Targa in Berber means "(drainage) channel". Another theory
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#17327767451037068-474: The daytime. The smallest variations are found along the coastal regions due to high humidity and are often even lower than a 10 °C (18 °F) difference, while the largest variations are found in inland desert areas where the humidity is the lowest, mainly in the southern Sahara. Still, it is true that winter nights can be cold, as it can drop to the freezing point and even below, especially in high-elevation areas. The frequency of subfreezing winter nights in
7182-469: The desert experiences around three to five months when the average high strictly exceeds 40 °C (104 °F); while in the southern central part of the desert, there are up to six or seven months when the average high temperature strictly exceeds 40 °C (104 °F). Some examples of this are Bilma , Niger and Faya-Largeau, Chad. The annual average daily temperature exceeds 20 °C (68 °F) everywhere and can approach 30 °C (86 °F) in
7296-530: The desert, along with the highlands, have areas of sparse grassland and desert shrub , with trees and taller shrubs in wadis , where moisture collects. In the central, hyperarid region, there are many subdivisions of the great desert: Tanezrouft , the Ténéré , the Libyan Desert , the Eastern Desert , the Nubian Desert and others. These extremely arid areas often receive no rain for years. To
7410-531: The drying-out period from 6000 to 2500 BCE by pastoralists overgrazing available grassland. The growth of speleothems (which requires rainwater) was detected in Hol-Zakh, Ashalim , Even-Sid, Ma'ale-ha-Meyshar, Ktora Cracks, Nagev Tzavoa Cave, and elsewhere, and has allowed tracking of prehistoric rainfall. The Red Sea coastal route was extremely arid before 140 and after 115 kya (thousands of years ago). Slightly wetter conditions appear at 90–87 kya, but it still
7524-404: The earth and ancestresses. Norris (1976) suggests that this apparent syncretism may stem from the influence of Sufi Muslim preachers on the Tuareg. The Tuaregs have been one of the influential ethnic groups in the spread of Islam and its legacy in North Africa and adjacent Sahel. Timbuktu , an important Islamic center famed for its ulama , was established by Imasheghen Tuareg at the start of
7638-667: The eastern continental extension of the Azores High , centered over the North Atlantic Ocean . The subsidence of the Sahara High nearly reaches the ground during the coolest part of the year, while it is confined to the upper troposphere during the hottest periods. The effects of local surface low pressure are extremely limited because upper-level subsidence still continues to block any form of air ascent. Also, to be protected against rain-bearing weather systems by
7752-442: The eastern dialect ( Tamajaq , Tawallammat ). The exact number of Tuareg speakers per territory is uncertain. The CIA estimates that the Tuareg population in Mali constitutes approximately 0.9% of the national population (~150,000), whereas about 3.5% of local inhabitants speak Tuareg (Tamasheq) as a primary language. In contrast, Imperato (2008) estimates that the Tuareg represent around 3% of Mali's population. In antiquity,
7866-614: The edge of the desert thousands of years ago, since the end of the last glacial period . In the Central Sahara, engraved and painted rock art were created perhaps as early as 10,000 years ago, spanning the Bubaline Period , Kel Essuf Period , Round Head Period , Pastoral Period , Caballine Period , and Cameline Period . The Sahara was then a much wetter place than it is today. Over 30,000 petroglyphs of river animals such as crocodiles survive, with half found in
7980-419: The fertile region on the Mediterranean Sea coast, the Atlas Mountains of the Maghreb , and the Nile Valley in Egypt and the Sudan . It stretches from the Red Sea in the east and the Mediterranean in the north to the Atlantic Ocean in the west, where the landscape gradually changes from desert to coastal plains. To the south it is bounded by the Sahel , a belt of semi-arid tropical savanna around
8094-418: The first hijra . Monroe asserts, based on archaeological evidence, that Timbuktu emerged from an urban-rural dynamic, that is, aiming to provide services to its immediate rural hinterland . In 1449, a Tuareg ruling house founded the Tenere Sultanate of Aïr (Sultanate of Agadez) in the city of Agadez in the Aïr Mountains . 18th century Tuareg Islamic scholars such as Jibril ibn 'Umar later preached
8208-484: The flow of dry, cold air from higher latitudes of Eurasia into the Sahara significantly. The average annual rainfall ranges from very low in the northern and southern fringes of the desert to nearly non-existent over the central and the eastern part. The thin northern fringe of the desert receives more winter cloudiness and rainfall due to the arrival of low pressure systems over the Mediterranean Sea along
8322-699: The habitat in areas of permanent water (oases) or where water comes close to the surface. Here, the local pressure on natural resources can be intense. The remaining populations of large mammals have been greatly reduced by hunting for food and recreation. In recent years development projects have started in the deserts of Algeria and Tunisia using irrigated water pumped from underground aquifers. These schemes often lead to soil degradation and salinization . Researchers from Hacettepe University have reported that Saharan soil may have bio-available iron and also some essential macro and micro nutrient elements suitable for use as fertilizer for growing wheat. People lived on
8436-405: The highest recorded worldwide. The sky is usually clear above the desert, and the sunshine duration is extremely high everywhere in the Sahara. Most of the desert has more than 3,600 hours of bright sunshine per year (over 82% of daylight hours), and a wide area in the eastern part has over 4,000 hours of bright sunshine per year (over 91% of daylight hours). The highest values are very close to
8550-551: The hottest months of the year. Salah, well known in Algeria for its extreme heat, has average high temperatures of 43.8 °C (110.8 °F), 46.4 °C (115.5 °F), 45.5 °C (113.9 °F) and 41.9 °C (107.4 °F) in June, July, August and September respectively. There are even hotter spots in the Sahara, but they are located in extremely remote areas, especially in the Azalai , lying in northern Mali. The major part of
8664-491: The hottest regions year-round. However, most of the desert has a value in excess of 25 °C (77 °F). Sand and ground temperatures are even more extreme. During daytime, the sand temperature is extremely high: it can easily reach 80 °C (176 °F) or more. A sand temperature of 83.5 °C (182.3 °F) has been recorded in Port Sudan . Ground temperatures of 72 °C (161.6 °F) have been recorded in
8778-443: The land, seeking instead soldiering or intellectual work. A semi-noble stratum of the Tuareg people has been the endogamous religious clerics, the marabouts (Tuareg: Ineslemen , a loan word that means Muslim in Arabic). After the adoption of Islam, they became integral to the Tuareg social structure. According to Norris (1976), this stratum of Muslim clerics has been a sacerdotal caste, which propagated Islam in North Africa and
8892-406: The last glacial period , the Sahara was much larger than it is today, extending south beyond its current boundaries. The end of the glacial period brought more rain to the Sahara, from about 8000 BCE to 6000 BCE, perhaps because of low pressure areas over the collapsing ice sheets to the north. Once the ice sheets were gone, the northern Sahara dried out. In the southern Sahara, the drying trend
9006-499: The late Medieval era, states Prasse, the previously existing weapon monopoly of the nobility broke down after regional wars took a heavy toll on the noble warrior strata, and thereafter the vassals carried weapons as well and were recruited as warriors. After the start of the French colonial rule, which deprived the nobles of their powers over war and taxation, the Tuaregs belonging to the noble strata disdained tending cattle and tilling
9120-458: The late nineteenth century, The hypothesis was later formally proposed and tested by the meteorologist John Kutzbach in 1981. Kutzbach's ideas about the impacts of insolation on global monsoonal patterns have become widely accepted today as the underlying driver of long-term monsoonal cycles. Kutzbach never formally named his hypothesis and as such it is referred to here as the " Orbital Monsoon Hypothesis " as suggested by Ruddiman in 2001. During
9234-530: The leeward side by dropping much of the humidity brought by atmospheric disturbances along the polar front which affects the surrounding Mediterranean climates. The primary source of rain in the Sahara is the Intertropical Convergence Zone , a continuous belt of low-pressure systems near the equator which bring the brief, short and irregular rainy season to the Sahel and southern Sahara. Rainfall in this giant desert has to overcome
9348-540: The loyalty of the Tuareg noble caste, did not improve the status of the slave class. When African countries achieved widespread independence in the 1960s, the traditional Tuareg territory was divided among a number of modern states: Niger, Mali, Algeria, Libya, and Burkina Faso. Political instability and competition for resources in the Sahel has since led to conflicts between the Tuareg and neighboring African groups. There have been tight restrictions placed on nomadic life because of high population growth . Desertification
9462-633: The majority ethnic group in the Kidal Region of northeastern Mali. The Tuareg traditionally speak the Tuareg languages , also known as Tamasheq, Tamajeq or Tamahaq , depending on the dialect. These languages belong to the Berber branch of the Afroasiatic family . According to Ethnologue , there are an estimated 1.2 million Tuareg speakers. Around half of this number consists of speakers of
9576-468: The massacres were the Tuaregs. The Tuareg traditionally adhered to the Berber mythology . Archaeological excavations of prehistoric tombs in the Maghreb have yielded skeletal remains that were painted with ochre . Although this ritual practice was known to the Iberomaurusians , the custom seems instead to have been primarily derived from the ensuing Capsian culture . Megalithic tombs, such as
9690-419: The maximum area of water and to find any surface moisture, and by having small thick leaves or needles to prevent water loss by evapotranspiration . Plant leaves may dry out totally and then recover. Several species of fox live in the Sahara including: the fennec fox , pale fox and Rüppell's fox . The addax , a large white antelope , can go nearly a year in the desert without drinking. The dorcas gazelle
9804-437: The middle Holocene Tenerian culture . The post-Kiffian desiccation lasted until around 4600 BCE, when the earliest artefacts associated with the Tenerians have been dated to. Some 200 skeletons have been discovered at Gobero. The Tenerians were considerably shorter in height and less robust than the earlier Kiffians. Craniometric analysis also indicates that they were osteologically distinct. The Kiffian skulls are akin to those of
9918-474: The military of both countries followed, with deaths into the thousands. Negotiations initiated by France and Algeria led to peace agreements in January 1992 in Mali and in 1995 in Niger, both arranging for decentralization of national power and the integration of Tuareg resistance fighters into the countries' national armies. Major fighting between the Tuareg resistance and government security forces ended after
10032-535: The most detailed commentary on the life and people of the Sahara, though he apparently never actually met them. At the turn of the 19th century, the Tuareg territory was organised into confederations, each ruled by a supreme Chief ( Amenokal ), along with a council of elders from each tribe. These confederations were sometimes called " Drum Groups " after the Amenokal's symbol of authority, a drum. Clan ( Tewsit ) elders, called Imegharan (wisemen), were chosen to assist
10146-586: The nobles constitute the highest caste. They are known in the Tuareg language as imušaɣ/imuhaɣ/imajăɣăn "the proud and free". The nobles originally had a monopoly on carrying arms and owning camels, and were the warriors of the Tuareg regions. They may have achieved their social status by subjugating other Tuareg castes, keeping arms to defend their properties and vassals. They have collected tribute from their vassals. This warrior nobility has traditionally married within their caste, not to individuals in strata below their own. A collection of tribes, each led by
10260-700: The north, the Sahara skirts the Mediterranean Sea in Egypt and portions of Libya, but in Cyrenaica and the Maghreb , the Sahara borders the Mediterranean forest, woodland, and scrub eco-regions of northern Africa, all of which have a Mediterranean climate characterized by hot summers and cool and rainy winters. According to the botanical criteria of Frank White and geographer Robert Capot-Rey,
10374-485: The northern limit of the Sahara corresponds to the northern limit of date palm cultivation and the southern limit of the range of esparto , a grass typical of the Mediterranean climate portion of the Maghreb and Iberia . The northern limit also corresponds to the 100 mm (3.9 in) isohyet of annual precipitation. To the south, the Sahara is bounded by the Sahel, a belt of dry tropical savanna with
10488-459: The opposite is true, with decreased annual precipitation and less vegetation resulting in a phase of the Sahara climate cycle known as the "desert Sahara". The idea that changes in insolation (solar heating) caused by long-term changes in Earth's orbit are a controlling factor for the long-term variations in the strength of monsoon patterns across the globe was first suggested by Rudolf Spitaler in
10602-419: The physical and atmospheric barriers that normally prevent the production of precipitation. The harsh climate of the Sahara is characterized by: extremely low, unreliable, highly erratic rainfall; extremely high sunshine duration values; high temperatures year-round; negligible rates of relative humidity ; a significant diurnal temperature variation ; and extremely high levels of potential evaporation which are
10716-401: The polar front, although very attenuated by the rain shadow effects of the mountains and the annual average rainfall ranges from 100 millimetres (4 in) to 250 millimetres (10 in). For example, Biskra , Algeria, and Ouarzazate , Morocco, are found in this zone. The southern fringe of the desert along the border with the Sahel receives summer cloudiness and rainfall due to the arrival of
10830-422: The pre-Islamic monogamous tradition of the nomadic Tuareg. Tuareg society has featured caste hierarchies within each clan and political confederation. These hierarchical systems have included nobles, clerics, craftsmen and unfree strata of people including widespread slavery. Traditionally, Tuareg society is hierarchical, with nobility and vassals. The linguist Karl-Gottfried Prasse (1995) indicates that
10944-713: The produce. Their Tuareg patrons were usually responsible for supplying agricultural tools, seed and clothing. The peasants' origins are also unclear. One theory postulates that they are descendants of ancient people who lived in the Sahara before they were dominated by invading groups. In contemporary times, these peasant strata have blended in with freed slaves and farm arable lands together. The Tuareg confederations acquired slaves, often of Nilotic origin, as well as tribute-paying states in raids on surrounding communities. They also took captives as war booty or purchased slaves in markets. The slaves or servile communities are locally called Ikelan (or Iklan , Eklan ), and slavery
11058-532: The recent past. Analysis of Nile River deposited sediments in the delta also shows this period had a higher proportion of sediments coming from the Blue Nile , suggesting higher rainfall also in the Ethiopian Highlands . This was caused principally by a stronger monsoonal circulation throughout the sub-tropical regions, affecting India, Arabia and the Sahara. Lake Victoria only recently became
11172-665: The revolt, but resentment among the Tuareg fueled further uprisings. This second (or third) uprising was in May 1990. In the aftermath of a clash between government soldiers and Tuareg outside a prison in Tchin-Tabaraden , Niger, Tuareg in both Mali and Niger claimed independence for their traditional homeland: Ténéré in Niger, including their capital Agadez , and the Azawad and Kidal regions of Mali. Deadly clashes between Tuareg fighters, with leaders such as Mano Dayak , and
11286-472: The saddles, tools, household items and other items for the Tuareg community. In Niger and Mali, where the largest Tuareg populations are found, the artisan castes were attached as clients to a family of nobles or vassals, carried messages over distances for their patron family, and traditionally sacrificed animals during Islamic festivals . These social strata, like caste systems found in many parts of West Africa, included singers, musicians and story tellers of
11400-608: The same area suggest that they lived on the shores of a lake that was present during the Holocene Wet Phase, a period when the Sahara was verdant and wet. The Kiffian people were tall, standing over six feet in height. Craniometric analysis indicates that this early Holocene population was closely related to the Late Pleistocene Iberomaurusians and early Holocene Capsians of the Maghreb, as well as mid-Holocene Mechta groups. Traces of
11514-427: The same name , also known as Tamasheq , which belong to the Berber branch of the Afroasiatic family . They are a semi-nomadic people who mostly practice Islam , and are descended from the indigenous Berber communities of Northern Africa, whose ancestry has been described as a mosaic of local Northern African ( Taforalt ), Middle Eastern , European ( Early European Farmers ), and Sub-Saharan African , prior to
11628-463: The scale of the Nile floods between 2700 and 2100 BCE. The Sahara comprises several distinct ecoregions . With their variations in temperature, rainfall, elevation, and soil, these regions harbor distinct communities of plants and animals. The flora of the Sahara is highly diversified based on the bio-geographical characteristics of this vast desert. Floristically , the Sahara has three zones based on
11742-521: The shelter of shrubs such as balanites and acacias. They are unusually pale. The other cheetah subspecies ( northeast African cheetah ) lives in Chad, Sudan and the eastern region of Niger. However, it is currently extinct in the wild in Egypt and Libya. There are approximately 2000 mature individuals left in the wild. Other animals include the monitor lizards , hyrax , sand vipers , and small populations of African wild dog , in perhaps only 14 countries and red-necked ostrich . Other animals exist in
11856-555: The skin underneath giving it a blueish tint. Another term for the Tuareg is Imuhagh or Imushagh , a cognate to the northern Berber self-name Imazighen . The Tuareg today inhabit a vast area in the Sahara , stretching from far southwestern Libya to southern Algeria, Niger, Mali, Burkina Faso, and the far north of Nigeria. Their combined population in these territories exceeds 2.5 million, with an estimated population in Niger of around 2 million (11% of inhabitants) and in Mali of another 0.5 million (3% of inhabitants). The Tuareg are
11970-452: The son of a sister of the incumbent chieftain to succeed to his position. The amenokal is elected in a ritual which differs between groups. The individual amghar who lead the clans making up the confederation usually have the deciding voice. The matrilineal inheritance and mythology among Tuareg clans, states Susan Rasmussen, is a cultural vestige from the pre-Islamic era of the Tuareg society. According to Rasmussen, Tuareg society exhibits
12084-541: The source of the White Nile and dried out almost completely around 15 kya. The sudden subsequent movement of the ITCZ southwards with a Heinrich event (a sudden cooling followed by a slower warming), linked to changes with the El Niño-Southern Oscillation cycle, led to a rapid drying out of the Saharan and Arabian regions, which quickly became desert. This is linked to a marked decline in
12198-561: The strongest anticyclonic weather regime, and the annual average rainfall can drop to less than 1 millimetre (0.04 in). In fact, most of the Sahara receives less than 20 millimetres (0.8 in). Of the 9,000,000 square kilometres (3,500,000 sq mi) of desert land in the Sahara, an area of about 2,800,000 square kilometres (1,100,000 sq mi) (about 31% of the total area) receives an annual average rainfall amount of 10 millimetres (0.4 in) or less, while some 1,500,000 square kilometres (580,000 sq mi) (about 17% of
12312-562: The theoretical maximum value. A value of 4300 hours (98%) of the time would be recorded in Upper Egypt ( Aswan , Luxor ) and in the Nubian Desert ( Wadi Halfa ). The annual average direct solar irradiation is around 2,800 kWh/(m year) in the Great Desert. The Sahara has a huge potential for solar energy production. The high position of the Sun, the extremely low relative humidity, and the lack of vegetation and rainfall make
12426-472: The tilt of the earth changes between 22° and 24.5°. At present, it is in a dry period, but it is expected that the Sahara will become green again in 15,000 years. When the North African monsoon is at its strongest, annual precipitation and subsequent vegetation in the Sahara region increase, resulting in conditions commonly referred to as the " green Sahara ". For a relatively weak North African monsoon,
12540-478: The total area) receives an average of 5 millimetres (0.2 in) or less. The annual average rainfall is virtually zero over a wide area of some 1,000,000 square kilometres (390,000 sq mi) in the eastern Sahara comprising deserts of: Libya, Egypt and Sudan ( Tazirbu , Kufra , Dakhla , Kharga , Farafra , Siwa , Asyut , Sohag , Luxor, Aswan, Abu Simbel , Wadi Halfa) where the long-term mean approximates 0.5 millimetres (0.02 in) per year. Rainfall
12654-642: The value of revolutionary jihad. Inspired by these teachings, Ibn 'Umar's student Usman dan Fodio led the Sokoto jihads and established the Sokoto Caliphate . Tuareg society has traditionally featured clan membership, social status and caste hierarchies within each political confederation. Clans have been a historic part of the Tuaregs. The 7th century invasion of North Africa from the Middle East triggered an extensive migration of Tuaregs such as
12768-403: Was initially counteracted by the monsoon , which brought rain further north than it does today. By around 4200 BCE, however, the monsoon retreated south to approximately where it is today, leading to the gradual desertification of the Sahara. The Sahara is now as dry as it was about 13,000 years ago. Lake Chad is the remnant of a former inland sea, paleolake Mega-Chad, which existed during
12882-470: Was just one tenth the rainfall around 125 kya. In the southern Negev Desert speleothems did not grow between 185 and 140 kya ( MIS 6), 110–90 (MIS 5.4–5.2), nor after 85 kya nor during most of the interglacial period (MIS 5.1), the glacial period and Holocene . This suggests that the southern Negev was arid-to-hyper-arid in these periods. During the Last Glacial Maximum (LGM) the Sahara
12996-575: Was more extensive than it is now with the extent of the tropical forests being greatly reduced, and the lower temperatures reduced the strength of the Hadley Cell . This is a climate cell which causes rising tropical air of the Inter-Tropical Convergence Zone (ITCZ) to bring rain to the tropics, while dry descending air, at about 20 degrees north , flows back to the equator and brings desert conditions to this region. It
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