Water and Aridity Index (AQA A-Level Geography): Flashcards
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Annual rainfall defining hot deserts
Annual rainfall defining hot deserts
Less than 250 mm per year
Annual rainfall in semi-arid regions
Annual rainfall in semi-arid regions
Between 250-500 mm per year
What water balance compares
What water balance compares
Mean annual precipitation (P) vs mean annual PET
PET (Potential Evapotranspiration) definition
PET (Potential Evapotranspiration) definition
Water lost from soil via plant transpiration & evaporation
Aridity index for hyper-arid environments
Aridity index for hyper-arid environments
Less than 0.05
Aridity index range for arid environments
Aridity index range for arid environments
0.05 to less than 0.20
Aridity index range for semi-arid environments
Aridity index range for semi-arid environments
0.20 to less than 0.50
Diurnal variation definition
Diurnal variation definition
Difference between daytime and night-time temperatures
Typical hot desert daytime temperature range
Typical hot desert daytime temperature range
45-55°C (commonly exceeding 30°C)
Typical diurnal temperature range in hot deserts
Typical diurnal temperature range in hot deserts
Over 30°C difference (can exceed 40°C)