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Hot desert climate

Location of hot desert climate Between 15and 30 north and south of the equator Paths of trade winds Western side land masses near cold currents
Temperature 30-50 day and 5 night Cloudless skies lead to very cold night temps
Precipitation Rare less then 100 mm yr Drought due to dry trade winds Winds blow over cold currents cold air has little moisture
Vegetation Plants widely spaced Little competition Deep tap roots in search of water Spongy interior expands to hold water Thick waxy skin prevents moisture loss
Animals Foxes snake lizards camel
Occupations Oasis dwellers Use fresh water of the oasis to grow crops egg dates cereals and figs Nomads Farmers who travel from place to place with animals and live in tents Oil workers Discovery of oil = development industry
Where does the sahal lie Fringes of Sahara desert
What happened with the high birth rates? Growth in population Demand for food housing fuel
What is happening to sahal land Over grazed and cultivated and trees chopped down
What is happening due to global warming ? Temps rising leading to drought and soil left bare and exposed
What are the solutions to the Sahara desertification Introduce irrigation schemes Restrict number of animals grazing the land Plant trees and grasses help bind soil
What is the Aswan dam project? River Nile provides Egypt with fresh water there is not enough fresh water for the year
When built and what does it do with water Aswan built in 1960s Holds back water from river Nile in lake Nasser Much if the lake water is pumped to the near by farmland
Problems Because the lakes doesn't flood the farmers Are without the rich alluvial soil they once depended on 90000 ppl left home : lake Nasser flooded when first created Ancient Egyptian tombs flooded Surface water evaporated due to high temperatures salt left
Benefits Regular fresh water supply to irrigate land Millions of Egyptians have access to a fresh water supply Dam provides half of Egypt's hydroelectricity Transport fishing and tourism benefit Lake Nasser is also used fish farming and water sports
Created by: Chloeg99