Podcast
Questions and Answers
Which factor contributes to increased greenhouse gas emissions as a consequence of the UHI effect?
Which factor contributes to increased greenhouse gas emissions as a consequence of the UHI effect?
- Climatic conditions in cities
- Absence of natural land in urban areas
- Presence of air pollutants in urban areas
- Increased demand for energy to cool buildings (correct)
What is the main cause of the Urban Heat Island (UHI) effect?
What is the main cause of the Urban Heat Island (UHI) effect?
- Anthropogenic heat release
- High demand for energy to cool buildings
- Absorption and re-radiation of solar radiation by artificial surfaces (correct)
- Presence of air pollutants
Under proper conditions, how much can the UHI be higher than the surrounding rural areas?
Under proper conditions, how much can the UHI be higher than the surrounding rural areas?
- 20-25°C
- 10-15°C (correct)
- 15-20°C
- 5-10°C
What term is used to describe the ability of artificial built surfaces to absorb and re-radiate solar radiation?
What term is used to describe the ability of artificial built surfaces to absorb and re-radiate solar radiation?
What phenomenon causes discomfort to the city dwellers due to a temperature difference between cities and surrounding suburbs?
What phenomenon causes discomfort to the city dwellers due to a temperature difference between cities and surrounding suburbs?
What is one of the vital reasons for the formation of Urban Heat Island (UHI)?
What is one of the vital reasons for the formation of Urban Heat Island (UHI)?
According to Taha (1997), what contributes to the creation of Urban Heat Island?
According to Taha (1997), what contributes to the creation of Urban Heat Island?
How does the demand for electricity change with every 10°C rise in temperature, according to Akbari et al. (2001)?
How does the demand for electricity change with every 10°C rise in temperature, according to Akbari et al. (2001)?
What is the role of Urban Heat Island in the winter season?
What is the role of Urban Heat Island in the winter season?
What contributes to the exacerbation of the Urban Heat Island effect, according to Li, K. et al.?
What contributes to the exacerbation of the Urban Heat Island effect, according to Li, K. et al.?
Study Notes
Urban Heat Island (UHI) Effect
- Increased energy consumption for cooling contributes to increased greenhouse gas emissions as a consequence of the UHI effect.
Causes of UHI
- The main cause of the Urban Heat Island (UHI) effect is the high concentration of heat-absorbing surfaces, such as pavement and buildings, in urban areas.
UHI Temperature Difference
- Under proper conditions, the UHI can be 1-3°C higher than the surrounding rural areas, and in extreme cases, it can be as high as 10°C higher.
Thermal Properties of Built Surfaces
- The term "heat island" is used to describe the ability of artificial built surfaces to absorb and re-radiate solar radiation.
Discomfort Due to UHI
- The Urban Heat Island effect causes discomfort to city dwellers due to a temperature difference between cities and surrounding suburbs.
Formation of UHI
- One of the vital reasons for the formation of Urban Heat Island (UHI) is the concentration of heat-absorbing surfaces in urban areas.
Contributing Factors to UHI
- According to Taha (1997), the concentration of heat-absorbing surfaces, such as pavement and buildings, contributes to the creation of Urban Heat Island.
Energy Demand and Temperature
- According to Akbari et al. (2001), the demand for electricity increases by 2-4% with every 10°C rise in temperature.
Role of UHI in Winter
- In the winter season, the Urban Heat Island effect can reduce the energy required for heating buildings.
Exacerbation of UHI
- According to Li, K.et al., the lack of vegetation cover contributes to the exacerbation of the Urban Heat Island effect.
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Description
Test your knowledge about the Urban Heat Island (UHI) effect, a phenomenon where cities have higher temperatures at their centers compared to surrounding rural areas. Explore the causes, impacts, and mitigation strategies related to UHI.
