Drought Flashcards
Drought
A period of below average precipitation in a region resulting in prolonged shortages in the water supply.
Water Scarcity
When the demand for clean fresh water exceeds the available supply
Meteorological Drought
Period of time with below average rainfall.
Agricultural Drought
Reduction in available water for crop growth.
Soil Moisture Defecit
Issues with Agricultural Drought
Not just caused by lack of precipitation but high temperatures and evapotranspiration will reduce soil moisture
Hydrological Drought
Reduction in the amount of water in rivers, lakes and the rate of aquifer recharge
Issues of Hydrological Drought
Can be driven by water diversion undergone by humans
Socio-Economic Drought
Water demand for social and economic purposes exceeds availability.
Issues of Socio-Economic Drought
Lack of human access for crop irrigation and drinking water results in famine.
ITCZ
Inter-Tropical Convergence Zone
Dynamic belt of low pressure near the equator.
The winds of different levels converge with the warm air rising.
The cooling of the warm air as it rises results in rainfall.