Geography A-Level
Aridity Index
What Aridity Index means in Geography A-Level, as defined for AQA.
Definition of Aridity Index
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Reference: AQA
Precipitation divided by potential evapotranspiration, quantifying aridity, with arid zones scoring between 0.05 and 0.20.
Topics that use Aridity Index
- Deserts as natural systems (AQA A-Level)
Related terms
- Atmospheric circulation
- Ecosystem interactions
- Geomorphic feedback and equilibrium
- Landform
- Landscape evolution
- Ocean-atmosphere interactions
- Spatial distribution
- Spatial distribution of biomes
Using Aridity Index in the exam
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