There are different types of deserts. What makes a desert a desert? Deserts are deserts because they lack water. It rains so rarely in a desert that some deserts even go two years without a drop of rain. The soil is so dry and hot that sometimes when rain comes, the rain evaporates before it reaches the ground.
A desert is a region so arid due to little rainfall that it supports only sparse and widely spaced vegetation or no vegetation at all. There are many different types of deserts including Trade wind deserts, Midlatitude deserts, Rain shadow deserts, and many more. The largest trade wind desert is the Sahara desert that is located in North Africa. Dry winds use cloud cover to allow more sunlight to heat the land. The Sahara desert has reached temperatures of 122 degrees Fahrenheit.
Sand as far as the eye can see and very little rainfall occurs in this region. About 2500 B.C., the climate of the Sahara changed. Africa was once a fertile plain but where the Sahara lies was once a fertile plain capable of harvesting foods nearly anytime of year due to the warm weather. But it slowly dried up. As the land became parched, the desert spread.
Wide variations of temperature occur in the deserts, ranging from a maximum of 46° C (114° F) during daylight hours to a minimum of 6° C (42° F) after sunset. During the winter season desert temperatures often drop to 0° C (32° F). The most humid area is along the Mediterranean coast, where the average annual rainfall is about 200 mm (about 8 in). Precipitation decreases rapidly to the south; Cairo receives on average only 26 mm (1 in) of rain a year, and in many desert locations it may rain only once in several years.”
However unlike conditions in temperate regions, the rainfall in arid zones differs between seasons. Rabat in Morocco, receives rain during the winter, while the summer is almost null of rainfall. It also varies from one year to another- The difference between the lowest and highest rainfall recorded in years can be significant, but it is usually within a range of 50 per cent of the mean. The variation in monthly rainfall is even bigger. Rainfall and temperature are the biggest factors for aridity, other factors have some smaller influences too.
Width of the continent is also nearly five thousand miles. Although Africa is so large, much of it is inhabitable. Desert soils, which have little organic content, cover large areas. The Sahara Desert, in the northern part, covers more than one fourth of Africa, and the Kalahari Desert is in the southern part of the continent. These two deserts are a natural detriment to the African continent because they make it difficult to reach the inland where most of the people live.
Climate and Water Resources : 2.1 Climate: Kuwait characterized by a desert climate which is dry, long and hot summer. The temperature in this region is reaching more than 45°C with frequent sandstorms in summer. However in winter, the temperatures are decreasing to reach 4°C. The rainy season is started from October to May. The annual rainfall is less than 100 (mm) in Area with100 km2, but in remaining part it differs between 100 and 300 mm.
The mountains help them be isolated and separate from other city-state making them more independent. They use the Mediterranean Sea to provide farming to provide additional crops, but they became master sailors and developed a large trading network to be able to trade with others. The climate was always hot and dry, which sometimes affected the growth of the crops for that season. In Ancient Egypt they use the Nile River and the Sahara Desert in some many ways that benefited them. Ancient Egypt was divided into two land different land, the black land and red land.
The Negev desert is characterized by its lengthy, waterless summer with rain events occurring during the colder months of the year. Hendrik Bruins adds in his article, “Ancient Desert Agriculture in the Negev and Climate-Zone Boundary Changes During Average, Wet and Drought Years”, that: The amount of average annual rainfall ranges from 300 mm in the northern Negev to only 25 mm in the southern Negev…Cereal food crops like wheat and barley require at least 250-300 mm to obtain a reasonable yield. Fruit trees, including grape vines, olives and pomegranates need more than 400 mm of precipitation. Therefore, most of the Negev is too dry for agriculture based only on rainfall. In short, agriculture reliant purely on levels of sufficient rainfall was destined for failure in the Negev desert region, which is characterized by its low precipitation and high evaporation.
Without the annual flooding of the Nile, Egyptians would have a very difficult time growing necessary amount food to sustain life. Most of the land in the Egyptian nation is dry desert. Very little rain falls year round here. The river provides the needed water to grow the crops as well as provide drinking water for the people. Th... ... middle of paper ... ...el.