Low Pressure
Air rises, cools, condenses into water vapour.
High Pressure
Air is descending, settled conditions.
Rossby Waves
Planetary waves which naturally occur in rotating fluids.
Water Scarcity
A lack of sufficient water, not having access to safe water supplies.
Virtual Water
Water used to produce goods and services.
Unconfined Aquifer
Where groundwater is in direct contact with the atmosphere through open pore spaces of overlying soil or rock.
Confined Aquifer
An aquifer below the land surface saturated with water.
Artificial Recharge
Spreading or impounding water on the land to increase infiltration through soil or injecting water into the aquifer.