The Urban Heat Island Effect: Causes and Consequences

The urban heat island (UHI) effect is a well-documented phenomenon where metropolitan areas experience significantly higher temperatures than their surrounding rural environments. This temperature discrepancy is primarily attributed to human activities and modifications to the natural landscape. The widespread use of dark, impermeable surfaces, such as asphalt and concrete, is a major contributor. These materials absorb and retain solar radiation more effectively than natural vegetation and soil. Consequently, cities release this stored heat slowly throughout the evening, preventing the cooling that typically occurs after sunset. The reduction of green spaces, which provide cooling through evapotranspiration, further exacerbates the issue. The consequences of the UHI effect are extensive, ranging from increased energy consumption for air conditioning to adverse health impacts. For vulnerable populations, particularly the elderly and those with pre-existing medical conditions, the heightened temperatures pose a significant public health concern. Addressing this challenge requires comprehensive urban planning, including the implementation of mitigation strategies. The integration of green infrastructure, such as parks and green roofs, alongside the use of reflective materials for pavements and buildings, represents a viable approach to reducing urban temperatures and enhancing urban resilience.

Câu hỏi luyện tập

1. What is the primary purpose of this passage?

2. According to the passage, what specific type of man-made ground covering is a major cause of the UHI effect?

3. The word 'exacerbates' in the second paragraph is closest in meaning to:

4. According to the passage, why do cities often fail to cool down after sunset?

5. What natural cooling process is reduced when green spaces are removed from cities?

6. For vulnerable people, what do the heightened temperatures in urban areas represent?

7. Which of the following is mentioned as a potential strategy to mitigate the urban heat island effect?

Chia sẻ bài viết

Facebook Twitter