Urban Climate (AQA A-Level Geography): Flashcards
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Practise the cards
10 cards from this deck
Urban microclimate
Urban microclimate
Small-scale variations in temp, precip, humidity, wind & evap
Annual mean temp increase in urban areas
Annual mean temp increase in urban areas
0.5-3°C higher
Urban heat island (UHI)
Urban heat island (UHI)
Zone around/above urban area with higher temps than rural areas
Max UHI temp difference on clear, calm days
Max UHI temp difference on clear, calm days
12°C
Urban canopy layer (UCL)
Urban canopy layer (UCL)
Layer of air from ground to mean building height
Urban boundary layer (UBL) daytime height
Urban boundary layer (UBL) daytime height
Over 1 kilometre
Albedo
Albedo
Reflectivity of a surface
Temperature inversion
Temperature inversion
Temp increases with height; prevents convection & traps pollution
Photochemical pollution
Photochemical pollution
Exhaust fumes trapped by temp inversions react with sunlight
Precipitation increase in urban areas
Precipitation increase in urban areas
5-10%