One of the main causes of drought in South Africa is the variability in rainfall (Mason and Tyson, 2000; Tyson and Preston-Whyte, 2000 and Vogel et al., 2000). The El Niño phenomenon accounts for approximately thirty percent of rainfall variability (Tyson and Preston-Whyte, 2000).
What causes drought in southern Africa?
Extreme drought events in southern Africa are the result of a number of atmospheric circulation interactions (Tyson, 1986; Lindesay, 1998) with some droughts and periods of reduced rainfall, for example, connected with ENSO events.
What are 5 causes of drought?
Here are the 5 natural and human causes of drought:
- 1) Land and water temperatures cause drought. …
- 2) Air circulation and weather patterns also cause drought. …
- 3) Soil moisture levels also contribute to drought. …
- 4) Drought can also be a supply and demand of water issue.
What are the main causes of drought in?
The Short Answer: A drought is caused by drier than normal conditions that can eventually lead to water supply problems. Really hot temperatures can make a drought worse by evaporating moisture from the soil.
What are the cause of drought in Africa?
East Africa (EA) has been the primary focus for various drought studies in recent years. … The main causes for the changing pattern of droughts include climate variabilities and anthropogenic effects. Droughts have extensive impacts on human beings, environment, water resources and agriculture.
How the impact of drought can be reduced in Southern Africa?
Enhancing irrigation schemes. Diversifying rural livelihoods through social protection, cash-transfer programs or improving access to markets and rural services: Access to markets could help create alternative non-farm employment that could reduce the impacts of droughts. Crop insurance. Shifting to drought tolerant …
What are the 4 types of drought?
As a result, the climatological community has defined four types of drought: 1) meteorological drought, 2) hydrological drought, 3) agricultural drought, and 4) socioeconomic drought.
How can we prevent drought?
Choose a water-efficient irrigation system such as drip irrigation for your trees, shrubs, and flowers. Turn irrigation down in fall and off in winter. Water manually in winter only if needed. Put a layer of mulch around trees and plants to reduce evaporation and keep the soil cool.
Does climate change cause drought?
Climate change increases the odds of worsening drought in many parts of the United States and the world in the decades ahead. … A changing climate can also alter atmospheric rivers (narrow streams of moisture transported in the atmosphere), which can especially disrupt precipitation patterns in the Western United States.
What are the precautions of drought?
Precautions to be taken during droughts are:
- Never pour down used water in drain. Use it to water the plants.
- Replace dripping faucets by replacing washers.
- Check all plumbing for leakages and get the faulty repaired by plumber.
- Take a bath by bucket rather than by shower.
- Use mulch to retain water in the soil.
What are the causes and effects of drought?
A lack of water in stores such as rivers, lakes, reservoirs and aquifers (water stored underground naturally) can lead to drought. Areas that rely on rainfall and surface water are more likely to experience drought. Surface water quickly evaporates in warm, dry conditions leading to an increased risk of drought.
What is the impact of drought on people?
Drought can also affect people’s health and safety. Examples of drought impacts on society include anxiety or depression about economic losses, conflicts when there is not enough water, reduced incomes, fewer recreational activities, higher incidents of heat stroke, and even loss of human life.
What are the causes and consequences of desertification?
Overgrazing is the major cause of desertification worldwide. Other factors that cause desertification include urbanization, climate change, overuse of groundwater, deforestation, natural disasters, and tillage practices in agriculture that make soils more vulnerable to wind.
How bad is the drought in Africa?
The drought of 2019 has been described as the worst in the last 90 years in the country, with the lowest recorded rainfall in Windhoek since 1891. The agricultural sector is one of Namibia’s primary industries and due to extremely low rainfall in 2019, production in the sector fell by 17.5%.
What are the consequences of drought in Africa?
|Primary impacts||Secondary impacts|
|Increased damage to natural habitats||Loss of biodiversity|
|Reduced forest, crop, and range land productivity||Reduced income and food shortages|
|Reduced water levels||Lower accessibility to water|
|Reduced cloud cover||Plant scorching|
How can we stop drought in Africa?
Immediate measures to mitigate drought
Water tankering from available sources; Rainwater & fog harvesting; Protection and use of springs; Cloud seeding; Evaporation suppression; Desalination of brackish groundwater or sea water; and Effluent treatment and re-use.