The Urban Heat Island Effect 3.0 / 5 based on 1 rating ? GeographyWeather systemsA2/A-levelAQA Created by: Georgew298Created on: 01-04-16 11:14 Characteristics of the UHI effect Urban areas are warmer that surrounding rural areas Highest temps are found over industrial areas or above heavily built up areas Areas within the city with the same land use (e.g. Suburbs) tend to have same temps (plateaus) Areas within the city that have natural features (e.g. parks) are cooler (temp sinks) Temperature cliffs are suddden increase in temps when land use becomes more intensive 1 of 3 Causes of the UHI effect Heat from anthropogenic activity (human) e.g. central heating and aircon Absorbtion of heat by urban surfaces e.g. concrete and brick Heat is released at night meaning UHI more noticable at that time Air pollution from cars and factories creates smog and clouds cover, trapping heat Less evapotranspiration occurs (requires heat) 2 of 3 Effect variation of UHI (Seasonally and daily) Rural areas cool quicker tha urban due to urban areas releasing heat at night Most noticable during anticyclonic conditions (clear skies) as more insolation means more heating of urban areas from the sun Low winds mean that heat cannot be blown away from urban areas 3 of 3
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