In the far north, the rugged east–west ranges of the Ogo Mountains lie at varying distances from the Gulf of Aden coast. Hot conditions prevail year-round, along with periodic monsoon winds and irregular rainfall.[6] Geology suggests the presence of valuable mineral deposits.
Due to Somalia's proximity to the equator, there is not much seasonal variation in its climate. However, there are some very unpredictable rainfalls that occur sometimes. Hot conditions prevail year-round along with monsoon (periodic seasonal reversing wind accompanied by corresponding changes in precipitation) winds and irregular rainfall. Mean daily maximum temperatures range from 30 to 40°C (86 to 104°F), except at higher elevations and along the eastern seaboard, where the effects of a cold offshore current can be felt. In Mogadishu, for instance, average afternoon highs range from 28 to 32°C (82 to 90°F) in April. Some of the highest mean annual temperatures in the world have been recorded in the country; Berbera on the northwestern coast has an afternoon high that averages more than 38°C (100°F) from June through September. Nationally, mean daily minimums usually vary from about 15 to 30°C (59 to 86°F).[7] The greatest range in climate occurs in northern Somalia, where temperatures sometimes surpass 45°C (113°F) in July on the littoral plains and drop below the freezing point during December in the highlands.[6][7] In this region, relative humidity ranges from about 40 percent in the mid-afternoon to 85 percent at night, changing somewhat according to the season.[7]
Unlike the climates of most other countries at this latitude, conditions in Somalia range from arid desert in the northeastern and central regions to semiarid steppe in the south and northwest. In the south, in the east Africa coastal forest, there are regions in which there is a tropical savanna climate. In the Cal Madow region of Somalia, there is cold steppe climate. In the northeast, annual rainfall is less than 4 inches (100mm); in the central plateaus, it is about 8 to 12 inches (200 to 300mm). The northwestern and southwestern parts of the nation, however, receive considerably more rain, with an average of 20 to 24 inches (510 to 610mm) falling per year. Although the coastal regions are hot and humid throughout the year, the hinterland is typically dry and hot. The Cal Madow and the Lag Badana national park are humid areas.[7]
Most of the country receives less than 500 millimeters (19.7in) of rain annually, and a large area encompassing the northeast and much of northern Somalia receives as little as 50 to 150 millimeters (1.97 to 5.91in). Certain higher areas in the north, however, record more than 500 millimeters (19.7in) a year, as do some coastal sites. The southwest receives 330 to 500 millimeters (13.0 to 19.7in). Generally, rainfall takes the form of showers or localized torrential rains and is extremely variable. Mean daily maximum temperatures throughout the country range from 30 to 40°C (86 to 104°F), except at higher elevations and along the Somali Sea coast. Mean daily minimum temperatures vary from 20°C (68°F) to more than 30°C (86°F). Northern Somalia experiences the greatest temperature extremes, with readings ranging from below freezing in the highlands in December to more than 45°C (113°F) in July in the coastal plain skirting the Gulf of Aden. The north's relative humidity ranges from about 40 percent in midafternoon to 85 percent at night, varying somewhat with the season. During the colder months, December to February, visibility at higher elevations is often restricted by fog. Temperatures in the south are less extreme, ranging from about 20 to 40°C (68 to 104°F). The hottest months are February through April. Coastal readings are usually five to ten degrees cooler than those inland. The coastal zone's relative humidity usually remains about 70 percent even during the dry seasons.
There are four main seasons around which pastoral and agricultural life revolve, and these are dictated by shifts in the wind patterns. From December to March is the Jilal, the harshest dry season of the year. The main rainy season, referred to as the Gu, lasts from April to June. This period is characterized by the southwest monsoons, which rejuvenate the pasture land, especially the central plateau, and briefly transform the desert into lush vegetation. From July to September is the second dry season, the Xagaa (pronounced "Hagaa"). The Dayr, which is the shortest rainy season, lasts from October to December.[7] The tangambili periods that intervene between the two monsoons (October–November and March–May) are hot and humid.[7]
Source 2: Food and Agriculture Organization: Somalia Water and Land Management (percent sunshine)[11]
Terrain, vegetation and drainage
Satellite image of SomaliaTopography of Somalia
Physio-graphically, Somalia is a land of limited contrast. In the north, a maritime semidesert plain parallels the Gulf of Aden coast, varying in width from roughly twelve kilometers in the west to as little as two kilometers in the east. Scrub-covered, this plain, known as the Guban (scrub land), is crossed by broad, shallow watercourses that are beds of dry sand except in the rainy seasons. When the rains arrive, the vegetation, which is a combination of low bushes and grass clumps, is quickly renewed, and for a time the guban provides some grazing for nomad livestock. This coastal strip is part of the Ethiopian xeric grasslands and shrublandsecoregion.
Inland from the gulf coast, the plain rises to the precipitous northward-facing cliffs of the dissected highlands. These form the rugged Karkaar mountain ranges that extend from the northwestern border with Ethiopia eastward to the tip of the Horn of Africa, where they end in sheer cliffs at Caseyr. The general elevation along the crest of these mountains averages about 1,800 meters above sea level south of the port town of Berbera, and eastward from that area it continues at 1,800 to 2,100 meters almost to Caseyr. The country's highest point, Shimber Berris, which rises to 2,460 meters, is located near the town of Erigavo.
Southward the mountains descend, often in scarped ledges, to an elevated plateau devoid of perennial rivers. This region of broken mountain terrain, shallow plateau valleys, and usually dry watercourses is known to the Somalis as the Ogo.
In the Ogo's especially arid eastern part, the plateau—broken by several isolated mountain ranges—gradually slopes toward the Somali Sea and in central Somalia constitutes the Mudug Plain. A major feature of this eastern section is the long and broad Nugaal Valley, with its extensive network of intermittent seasonal watercourses. The Nugaal river enters the Somali Sea at Eyl. The eastern area's population consists mainly of pastoral nomads eking a living in a zone of low and erratic rainfall.
The western part of the Ogo plateau region is crossed by numerous shallow valleys and dry watercourses. Annual rainfall is greater than in the east, and there are flat areas of arable land that provide a home for dryland cultivators. Most important, the western area has permanent wells to which the predominantly nomadic population returns during the dry seasons. The western plateau slopes gently southward and merges imperceptibly into an area known as the Haud, a broad, undulating terrain that constitutes some of the best grazing lands for Somali nomads, despite the lack of appreciable rainfall more than half the year. Enhancing the value of the Haud are the natural depressions that during periods of rain become temporary lakes and ponds.
The Haud zone continues for more than sixty kilometers into Ethiopia, and the vast Somali Plateau, which lies between the northern Somali mountains and the highlands of southeast Ethiopia, extends south and eastward through Ethiopia into central and southwest Somalia. The portion of the Haud lying within Ethiopia was the subject of an agreement made during the colonial era. In 1948, under pressure from their World War II allies and to the dismay of the Somalis,[12] the British "returned" the Haud (an important Somali grazing area that was presumably 'protected' by British treaties with the Somalis in 1884 and 1886) and the Ogaden to Ethiopia, based on an 1897 treaty in which the British ceded Somali territory to the Ethiopian Emperor Menelik in exchange for his help against plundering by Somali clans.[13] Britain included the proviso that the Somali nomads would retain their autonomy, but Ethiopia immediately claimed sovereignty over them.[14] This prompted an unsuccessful bid by Britain in 1956 to buy back the Somali lands it had turned over.[14] The stretch of land has since been a considerable source of regional strife.
Southwestern Somalia is dominated by the country's only two permanent rivers, the Jubba and the Shabeelle. With their sources in the Ethiopian highlands, these rivers flow in a generally southerly direction, cutting wide valleys in the Somali Plateau as it descends toward the sea; the plateau's elevation falls off rapidly in this area. The adjacent coastal zone, which includes the lower reaches of the rivers and extends from the Mudug Plain to the Kenyan border, averages 180 meters above sea level.
The Jubba River enters the Somali Sea at Kismaayo. Although the Shabeelle River at one time apparently also reached the sea near Merca, its course is thought to have changed in prehistoric times. The Shabeelle now turns southwestward near Balcad (about thirty kilometers north of Mogadishu) and parallels the coast for more than eighty-five kilometers. The river is perennial only to a point southwest of Mogadishu; thereafter it consists of swampy areas and dry reaches and is finally lost in the sand east of Jilib, not far from the Jubba River. During the flood seasons, the Shabeelle River may fill its bed to a point near Jilib and occasionally may even break through to the Jubba River farther south. Favorable rainfall and soil conditions make the entire riverine region a fertile agricultural area and the center of the country's largest sedentary population.
In most of northern, northeastern, and north-central Somalia, where rainfall is low, the vegetation consists of scattered low trees, including various acacias, and widely scattered patches of grass. This vegetation gives way to a combination of low bushes and grass clumps in the highly arid areas of the northeast and along the Gulf of Aden.
As elevations and rainfall increase in the maritime ranges of the north, the vegetation becomes denser. Aloes are common, and on the higher plateau areas of the Ogo are woodlands. At a few places above 1,500 meters, the remnants of juniper forests (protected by the state) and areas of Euphorbia candelabrum (a chandelier-type spiny plant) occur. In the more arid highlands of the northeast, Boswellia and Commiphora trees are sources, respectively, of the frankincense and myrrh for which Somalia has been known since ancient times.
Hargeisa and much of northwestern Somalia is desert or hilly terrain. Here, the thelarchic-shaped Naasa Hablood hills are shown.
A broad plateau encompassing the northern city of Hargeysa, which receives comparatively heavy rainfall, is covered naturally by woodland (much of which has been degraded by overgrazing) and in places by extensive grasslands. Parts of this area have been under cultivation since the 1930s, producing sorghum and maize; in the 1990s it constituted the only significant region of sedentary cultivation outside southwestern Somalia.
The Haud south of Hargeysa is covered mostly by a semiarid woodland of scattered trees, mainly acacias, underlain by grasses that include species especially favored by livestock as forage. There vegetation forms spatially periodic patterns reminiscent of a tiger skin when viewed from above and therefore knowns as "tiger bush".[15] As the Haud merges into the Mudug Plain in central Somalia, the aridity increases and the vegetation takes on a subdesert character. Farther southward the terrain gradually changes to semiarid woodlands and grasslands as the annual precipitation increases.
The region encompassing the Shabeelle and Jubba rivers is relatively well watered and constitutes the country's most arable zone. The lowland between the rivers supports rich pasturage. It features arid to subarid savanna, open woodland, and thickets that include frequently abundant underlying grasses. There are areas of grassland, and in the far southwest, near the Kenyan border, some dry evergreen forests are found.
Along the Somali Sea from Hobyo southwestward to near Mogadishu lies a stretch of dry coastal sand dunes, the Hobyo grasslands and shrublandsecoregion.[16] This area is covered with scattered scrub and grass clumps where rainfall is sufficient although unpredictable. Much of this coast is thinly populated but overgrazing, particularly south of Mogadishu, has resulted in the destruction of the protective vegetation cover and the gradual movement of the once-stationary dunes inland. The original flora of this coast contains a number of endemic species and beginning in the early 1970s, efforts were made to stabilize these dunes by replanting. Endemic mammals are the silver dik-dik (Madoqua piacentinii), one of the world's smallest antelopes, and the Somali golden mole (Calcochloris tytonis). Other endemic species include two reptiles, a skinkHaackgreerius miopus and a lizard Latastia cherchii and two birds, Ash's lark (Mirafra ashi) and the Obbia lark (Spizocorys obbiensis). The long-term political strife in Somalia has meant the coast is poorly studied and the state of the habitat unknown.[17]
Other vegetation includes plants and grasses found in the swamps into which the Shabeelle River empties most of the year and in other large swamps in the course of the lower Jubba River. Swamps of East African mangroves are found at points along the coast, particularly from Kismaayo to near the Kenyan border. Uncontrolled exploitation appears to have caused some damage to forests in that area. Other mangroves are located near Mogadishu and at a number of places along the northeastern and northern coasts.
Data
The Guardafui Channel, between the tip of Somalia and Socotra island.
Climate: principally desert; December to February - northeast monsoon, moderate temperatures in north and very hot in south; May to October - southwest monsoon, torrid in the north and hot in the south, irregular rainfall, hot and humid periods (tangambili) between monsoons
Terrain: mostly flat to undulating plateau rising to hills in north
International environment agreements: party to: Biodiversity, Desertification, Endangered Species, Law of the Sea, Ozone Layer Protection signed, but not ratified: Marine Dumping, Nuclear Test Ban
Africa is a continent comprising 63 political territories, representing the largest of the great southward projections from the main mass of Earth's surface. Within its regular outline, it comprises an area of 30,368,609 km2 (11,725,385 sq mi), excluding adjacent islands. Its highest mountain is Kilimanjaro; its largest lake is Lake Victoria.
Ivory Coast is a sub-Saharan nation in southern West Africa located at 8° N, 5° W. The country is approximately square in shape.
Djibouti is a country in the Horn of Africa. It is bordered by Eritrea in the north, Ethiopia in the west and south, and Somalia in the southeast. To the east is its coastline on the Red Sea and the Gulf of Aden. Rainfall is sparse, and most of the territory has a semi-arid to arid environment. Lake Assal is a saline lake which lies 155 m (509 ft) below sea level, making it the lowest point on land in Africa and the third-lowest point on Earth after the Sea of Galilee and the Dead Sea. Djibouti has the fifth smallest population in Africa. Djibouti's major settlements include the capital Djibouti City, the port towns of Tadjoura and Obock, and the southern cities of Ali Sabieh and Dikhil. It is the forty-six country by area in Africa and 147st largest country in the world by land area, covering a total of 23,200 km2 (9,000 sq mi), of which 23,180 km2 (8,950 sq mi) is land and 20 km2 (7.7 sq mi) is water.
Eritrea is located in the Horn of Africa and is bordered on the northeast and east by the Red Sea, on the west and northwest by Sudan, on the south by Ethiopia, and on the southeast by Djibouti. The country has a high central plateau that varies from 1,800 to 3,000 meters (5,906–9,843 ft) above sea level. A coastal plain, western lowlands, and some 350 islands comprise the remainder of Eritrea's land mass.
The Geography of Kenya is diverse, varying amongst its 47 counties. Kenya has a coastline on the Indian Ocean, which contains swamps of East African mangroves. Inland are broad plains and numerous hills. Kenya borders South Sudan to the northwest, Uganda to the west, Somalia to the east, Tanzania to the south, and Ethiopia to the north. Kenya currently faces border disputes with South Sudan over the Ilemi Triangle and with Somalia over Jubbaland where, if the Somalian Government gives it up, it could be a new part of Kenya, which would bring the total land area of Kenya to approximately 692,939 km2.
Nigeria is a country in West Africa. It shares land borders with the Republic of Benin to the west, Chad and Cameroon to the east, and Niger to the north. Its coast lies on the Gulf of Guinea in the south and it borders Lake Chad to the northeast. Notable geographical features in Nigeria include the Adamawa Plateau, Mambilla Plateau, Jos Plateau, Obudu Plateau, the Niger River, Benue River, and Niger Delta.
Sri Lanka, formerly called Ceylon, is an island nation in the Indian Ocean, southeast of the Indian subcontinent, in a strategic location near major sea lanes. The nation has a total area of 65,610 square kilometres (25,330 sq mi), with 64,630 square kilometres (24,950 sq mi) of land and 980 square kilometres (380 sq mi) of water. Its coastline is 1,340 kilometres (830 mi) long. The main island of Sri Lanka has an area of 64, 058 km2; it is the twenty-fifth largest island in the world by area. Dozens of offshore islands account for the remaining 1552 km2 area. The largest offshore island, Jaffna Island is separated by Chundikulam lagoon and Mannar Island, is linked to Adam's Bridge, a land connection to the Indian mainland, which is now mostly submerged with only a chain of limestone shoals remaining above sea level. According to temple records, this natural causeway was formerly whole, but was breached by a violent storm in 1480. The formation is also known as Rama's Bridge, as according to Hindu mythology, it was constructed during the rule of Lord Rama.
Yemen is located in West Asia, at the southern tip of the Arabian Peninsula, between Oman and Saudi Arabia. It is situated at the entrance to the Bab-el-Mandeb Strait, which links the Red Sea to the Indian Ocean and is one of the most active and strategic shipping lanes in the world. Yemen has an area of 555,000 square kilometres (214,000 sq mi), including the islands of Perim at the southern end of the Red Sea and Socotra at the entrance to the Gulf of Aden. Yemen's land boundaries total 1,746 kilometres (1,085 mi). Yemen borders Saudi Arabia to the north and Oman to the northeast. Through the Socotra island, Yemen also shares borders with the Guardafui Channel and the Somali Sea.
Mauritania, a country in the Western Region of the continent of Africa, is generally flat, its 1,030,700 square kilometres forming vast, arid plains broken by occasional ridges and clifflike outcroppings. Mauritania is the world’s largest country lying entirely below an altitude of 1,000 metres (3,300 ft). It borders the North Atlantic Ocean, between Senegal and Western Sahara, Mali and Algeria. It is considered part of both the Sahel and the Maghreb. A series of scarps face southwest, longitudinally bisecting these plains in the center of the country. The scarps also separate a series of sandstone plateaus, the highest of which is the Adrar Plateau, reaching an elevation of 500 metres or 1,640 feet. Spring-fed oases lie at the foot of some of the scarps. Isolated peaks, often rich in minerals, rise above the plateaus; the smaller peaks are called Guelbs and the larger ones Kedias. The concentric Guelb er Richat is a prominent feature of the north-central region. Kediet ej Jill, near the city of Zouîrât, has an elevation of 915 metres or 3,002 feet and is the highest peak.
Ethiopia is located in the Horn of Africa. It is bordered by Eritrea to the north, Djibouti and Somalia to the east, Sudan and South Sudan to the west, and Kenya to the south. Ethiopia has a high central plateau, the Abyssinian Highlands that varies from 1,290 to 3,000 m above sea level, with some 25 mountains whose peaks rise over 4,000 meters (13,200ft), the highest being Ras Dashen at 4,543 meters (14,538ft).
The Shebelle River also known historically as the Nile of Mogadishu, begins in the highlands of Ethiopia, and then flows southeast into Somalia towards Mogadishu. Near Mogadishu, it turns sharply southwest, where it follows the coast. Below Mogadishu, the river becomes seasonal. During most years, the river dries up near the mouth of the Jubba River, while in seasons of heavy rainfall, the river actually reaches the Jubba and thus the ocean.
The Haud, formerly known as the Hawd Reserve Area, is a plateau situated in the Horn of Africa consisting of thorn-bush and grasslands. The region includes the northern part of the Somaliland as well as the northern and eastern parts of the Somali Region of Ethiopia. Haud is a historic region as well as an important grazing area and has multiple times been referenced in countless notorious poems. The region is also known for its red soil, caused by the soil's iron richness. The Haud covers an estimated area of about 119,000 square km, more than nine-tenths the size of England, or roughly the size of North Korea.
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The Western High Plateau, Western Highlands or Bamenda Grassfields is a region of Cameroon characterised by high relief, cool temperatures, heavy rainfall and savanna vegetation. The region lies along the Cameroon line and consists of mountain ranges and volcanoes made of crystalline and igneous rock. The region borders the South Cameroon Plateau to the southeast, the Adamawa Plateau to the northeast and the Cameroon coastal plain to the south.
Western Australia occupies nearly one third of the Australian continent. Due to the size and the isolation of the state, considerable emphasis has been made of these features; it is the second largest administrative territory in the world, after Yakutia in Russia, despite the fact that Australia is only the sixth largest country in the world by area, and no other regional administrative jurisdiction in the world occupies such a high percentage of a continental land mass.
The Djibouti xeric shrublands is an ecoregion defined by One Earth, consisting of a semi-desert strip on or near the Red Sea and the Gulf of Aden coasts in Eritrea, Ethiopia, Djibouti and Somalia. This ecoregion lies mainly between sea level and 800 meters (m) elevation. There are, however, many hills and massifs, which range up to 1300 m as well as outstanding fault-induced depressions, such as the Danakil, lying as low as 155 m below sea level. This region is extremely active tectonically, experiencing many earthquakes and intermittently active volcanoes. Rainfall is very low and yearly averages range from 100 to 200 millimeters (mm), with less rain falling closer to the coast. There are many species of interest, including the endemic Archer's lark, a species of dragon tree, and a large suite of desert ungulates, including the last viable population of African wild ass.
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The Nugaal Valley, also called the Nogal Valley, is a long and broad valley located in northern Somalia. The Nugaal Valley is bounded to the north by the Warsangali clan, the Nugal Plateau and to the south by 'Iid.
The Somali Acacia–Commiphora bushlands and thickets is a semi-arid tropical grasslands, savannas, and shrublands ecoregion in the Horn of Africa. It is home to diverse communities of plants and animals, including several endemic species.
Somaliland is an unrecognised sovereign state in the Horn of Africa, internationally considered to be part of Somalia. Somaliland is located in the East African sub-continent between the equator and the Gulf of Aden. The country occupies an area of approximately 176,120 square kilometres (68,000 sq mi). The climate is mostly hot and desertlike; it is largely arid with some semi-arid regions.
↑ "Klimatafel von Mogadischu (Mogadiscio) / Somalia"(PDF). Baseline climate means (1961–1990) from stations all over the world (in German). Deutscher Wetterdienst. Archived(PDF) from the original on 25 March 2019. Retrieved 22 October 2016.
↑ Federal Research Division, Somalia: A Country Study, (Kessinger Publishing, LLC: 2004), p.38
↑ David D. Laitin, Politics, Language, and Thought: The Somali Experience, (University Of Chicago Press: 1977), p.73
1 2 Zolberg, Aristide R., et al., Escape from Violence: Conflict and the Refugee Crisis in the Developing World, (Oxford University Press: 1992), p.106
↑ MacFadyen W.A. (1950). Vegetation patterns in the semi-desert plains of British Somaliland. Geographical Journal, 116, 199-210.
Eklöw, Karolina; Krampe, Dr Florian (October 2019). Climate-related security risks and peacebuilding in Somalia (SIPRI Research Report 53). Stockholm: SIPRI.
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