Drou
A drought is an extended period of time when ra
Drought conditions can affect any place, globally
days without rainfall.
Drought mainly occurs in arid regions.
Mostly located within the tropics, between 23.5 d
Permanently low precipitation - average rainfall i
A short growing season of about 75 days.
Natural vegetation is sparse - grasses, small shrub
There is a gradual reduction in the amount of ava
The lack of water is unpredictable.
why does global circulation make some locations more vuln
The air rises at the equator causing thunderstorms and loss
moisture.
Drier air moves north to mid latitudes.
When it reaches 30N/S where the Hadley and Ferrell circu
cells are the cold dry air descends and warms.
This creates high pressure and deserts as there is little
precipitation.
The position of global winds is shifting.
The jet streams have moved poleward and the tropical bel
widened meaning arid areas are changing.
Why is drought a hazard?
Depletion of water supplies leads to shortages and lower
and animals to die. Lakes and reservoirs become stagnant
sewage. This increases the risk of contamination of water
A lack of water can also damage crops and harm livestock
malnutrition. Farmers may also lose their livelihoods.
A drought is an extended period of time when ra
Drought conditions can affect any place, globally
days without rainfall.
Drought mainly occurs in arid regions.
Mostly located within the tropics, between 23.5 d
Permanently low precipitation - average rainfall i
A short growing season of about 75 days.
Natural vegetation is sparse - grasses, small shrub
There is a gradual reduction in the amount of ava
The lack of water is unpredictable.
why does global circulation make some locations more vuln
The air rises at the equator causing thunderstorms and loss
moisture.
Drier air moves north to mid latitudes.
When it reaches 30N/S where the Hadley and Ferrell circu
cells are the cold dry air descends and warms.
This creates high pressure and deserts as there is little
precipitation.
The position of global winds is shifting.
The jet streams have moved poleward and the tropical bel
widened meaning arid areas are changing.
Why is drought a hazard?
Depletion of water supplies leads to shortages and lower
and animals to die. Lakes and reservoirs become stagnant
sewage. This increases the risk of contamination of water
A lack of water can also damage crops and harm livestock
malnutrition. Farmers may also lose their livelihoods.
