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With reference to the urban heat island, consider the following statements:
1. It is a local and temporary phenomenon experienced when certain pockets within a city.
2. The temperature variation can range between 3 to 5 degrees Celsius.
Which of the statements given above is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
With reference to the urban heat island, consider the following statem...
Several parts of the country are reeling under heat wave conditions. Cities, especially, are a lot hotter than rural areas. This is due to a phenomenon called an “urban heat island”.
- An urban heat island is a local and temporary phenomenon experienced when certain pockets within a city experience higher heat load than surrounding or neighbouring areas on the same day.
- These are not the typical islands around water bodies, but urban heat islands that record higher day temperatures than other localities.
- The temperature variation can range between 3 to 5 degrees Celsius.
- For example, a greener locality like Pashan in Pune often records cooler temperatures than urban areas like Shivajinagar, Chinchwad or Magarpatta.
Causes
- The variations are mainly due to heat remaining trapped within locations that often resemble concrete jungles.
- Rural areas have relatively larger green cover in the form of plantations, farmlands, forests and trees as compared to urban spaces. This green cover plays a major role in regulating heat in its surroundings.
- Cities usually have buildings constructed with glass, bricks, cement and concrete — all of which are dark-coloured materials, meaning they attract and absorb higher heat content.
Hence both statements are correct.
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With reference to the urban heat island, consider the following statem...
Introduction:
The urban heat island (UHI) phenomenon refers to the increased temperature in urban areas compared to the surrounding rural areas. It is caused by human activities and the urban infrastructure which alters the natural thermal characteristics of the area. The UHI effect can have various impacts on the environment, human health, and energy consumption. Let's analyze the given statements:
Statement 1: It is a local and temporary phenomenon experienced when certain pockets within a city.
This statement is correct.
Explanation:
- The urban heat island effect is a localized phenomenon that occurs within specific pockets or areas of a city.
- It is not uniformly experienced across the entire city but rather in specific locations where urbanization and human activities have significantly altered the thermal characteristics.
- Factors such as the density of buildings, presence of concrete and asphalt, lack of vegetation, and waste heat from human activities contribute to the formation of urban heat islands.
- These localized areas experience higher temperatures compared to their surrounding rural areas.
Statement 2: The temperature variation can range between 3 to 5 degrees Celsius.
This statement is correct.
Explanation:
- The temperature variation in urban heat islands can range between 3 to 5 degrees Celsius or even more depending on the specific conditions.
- The magnitude of the temperature difference depends on various factors such as the size and density of the urbanized area, the extent of impervious surfaces, and the surrounding land cover.
- Urban areas with a higher concentration of buildings and paved surfaces experience more significant temperature increases compared to areas with more green spaces.
- The UHI effect is most pronounced during the night when the heat absorbed by buildings and surfaces during the day is released slowly, resulting in warmer nighttime temperatures.
Conclusion:
Both statements 1 and 2 are correct. The urban heat island effect is a local and temporary phenomenon experienced in certain pockets within a city, and the temperature variation can range between 3 to 5 degrees Celsius or more. Understanding and mitigating the UHI effect is essential for sustainable urban planning and design to create healthier and more comfortable living environments.
The urban heat island (UHI) phenomenon refers to the increased temperature in urban areas compared to the surrounding rural areas. It is caused by human activities and the urban infrastructure which alters the natural thermal characteristics of the area. The UHI effect can have various impacts on the environment, human health, and energy consumption. Let's analyze the given statements:
Statement 1: It is a local and temporary phenomenon experienced when certain pockets within a city.
This statement is correct.
Explanation:
- The urban heat island effect is a localized phenomenon that occurs within specific pockets or areas of a city.
- It is not uniformly experienced across the entire city but rather in specific locations where urbanization and human activities have significantly altered the thermal characteristics.
- Factors such as the density of buildings, presence of concrete and asphalt, lack of vegetation, and waste heat from human activities contribute to the formation of urban heat islands.
- These localized areas experience higher temperatures compared to their surrounding rural areas.
Statement 2: The temperature variation can range between 3 to 5 degrees Celsius.
This statement is correct.
Explanation:
- The temperature variation in urban heat islands can range between 3 to 5 degrees Celsius or even more depending on the specific conditions.
- The magnitude of the temperature difference depends on various factors such as the size and density of the urbanized area, the extent of impervious surfaces, and the surrounding land cover.
- Urban areas with a higher concentration of buildings and paved surfaces experience more significant temperature increases compared to areas with more green spaces.
- The UHI effect is most pronounced during the night when the heat absorbed by buildings and surfaces during the day is released slowly, resulting in warmer nighttime temperatures.
Conclusion:
Both statements 1 and 2 are correct. The urban heat island effect is a local and temporary phenomenon experienced in certain pockets within a city, and the temperature variation can range between 3 to 5 degrees Celsius or more. Understanding and mitigating the UHI effect is essential for sustainable urban planning and design to create healthier and more comfortable living environments.
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With reference to the urban heat island, consider the following statements:1. It is a local and temporary phenomenon experienced when certain pockets within a city.2. The temperature variation can range between 3 to 5 degrees Celsius.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?
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