Limestone, when pulverized, forms silt-sized dusts.

The valleys and lower slopes of the Yemen and Asir highlands are extensively terraced for soil and water conservation and produce many crops, of which coffee is important in local markets. The peregrine falcon is seen in Asir, saker and lanner falcons (a brown falcon with a golden cap) are found in Najd and eastern Saudi Arabia, and the kestrel is everywhere.

Rainfall throughout the desert averages less than 4 inches (100 mm) a year but can range from 0 to 20 inches (0 to 500 mm). Further inland as you approach the steppe

Plants are primarily xerophytic (structurally adapted to a limited water supply) or halophytic (salt-tolerant). Syria is located in Western Asia, north of the Arabian Peninsula, at the eastern end of the Mediterranean Sea. Birds of the Arabian Desert include local species as well as migrant groups from northern Europe, Africa, and India.

There are few At Aleppo, in the northwest, the average August temperature is about 30&debg;C and the average January temperature is 4°C. About Syria  |  Trip Planner 

The Arabian Desert spreads across 22° of latitude, from 12° to 34° north; although much of the desert lies north of the Tropic of Cancer, it usually is considered a tropical desert. about 30.8° C and about 6.4° C. Along the West of the coastal mountainous range, Palms also supply wood for building and for making water-well frames and pulley shafts of ancient type; their fronds are used for handicrafts and for thatching roofs.

The region’s animal life is varied and unique. Camel in the Arabian Desert, Saudi Arabia. The desert climate or arid climate (in the Köppen climate classification BWh and BWk), is a climate in which there is an excess of evaporation over precipitation.The typically bald, rocky, or sandy surfaces in desert climates hold little moisture and evaporate the little rainfall they receive. Troops of baboons roam in Asir. Syria has many different climates, but is dominated by Csa. Many lizards, including skinks, geckos, agamids, and collared lizards, are found in the sand. Hot days produce myriads of dust devils and the ill-famed mirage optical illusions.

There are hares, as well as golden sand rabbits. and Damascus receives about 255 to 510 mm a year. Their trunks are cut into the beams and pillars that characterize the region’s architecture. Winter rains may occur in the northern Rubʿ al-Khali. At Aleppo, in the northwest, the average August temperature is about 30&debg;C and the average January temperature is 4°C. Date palms, of which there are numerous varieties, are grown in many oases, with the dates themselves providing food for humans and livestock. Shrubs that yield the fragrant frankincense and myrrh are found in the lower elevations of the Dhofar region of Oman.

After spring rains, long-buried seeds germinate and bloom in a few hours. Shamals, which try the patience of those caught in them, are dry winds that transport huge loads of sand and dust and alter the shapes of sand dunes. Migrant birds follow several flyways, one through the central Najd and others on each coast. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Blown sand does not rise more than a few feet (a metre or two) above the surface, except when picked up by whirlwinds, dust devils (jinn), or regional sandstorms. In the interior the heat is dry. Smaller particles, such as clays, rarely form. Many herbs grow throughout the desert and are well known to the Bedouin, who use them for seasoning, preserving food, perfuming clothing, and washing hair. Bee eaters, warblers, babblers, carrion kites, swallows, martins, swifts, wheatears, shrikes, larks, flycatchers, hoopoes, and some exotic species may be seen alone, in pairs, or in flocks.

The dab (or dabb), a fat-tailed lizard, lives on the plains and reaches a length of up to three and a half feet (more than one metre). Arachnida (a class of segmented invertebrates) include large sapulgids (scorpion-killers), scorpions, ticks, and spiders. at the edge of the Syrian Desert, the corresponding temperatures are temperature is about 4.4° C, and Damascus is very similar in the south. The saker falcon (an aggressive, light brown raptor) is often captured young and trained by Bedouin falconers to hunt the bustard and sand grouse. head Eastwards rainfall decreases rapidly; the steppe between Aleppo Vipers abound in sand and rocks but, being nocturnal, are seldom seen in the heat of day. and dry low lands. average August temperature is about 30° C, and the average January Mashta al Helu are local favorites. into a dark red color for two to three days each time.

Once or twice a year sand-bearing winds, or In addition, many plants, called halophytes, grow in saline soils.

Gazelles roamed the plains in herds of hundreds before World War II and afterward almost became extinct, until the Saudi government began to regulate hunting and established wildlife preserves.