Scholarlink

This research has evaluated the issue of peri-urbanization impact on the phenomenon of the urban heat island (UHI) and thermal stress on the urban setting of Jorhat and Nagaon in India. The experiment incorporated the urban heat island and sprawl trend through UHI index and Urban Sprawl Index (USI) using satellite data between 2007 and 2021. Further, Thermo-hygrometric index (THI) and Net effect temperature (NET) were used in assessing thermal discomfort. The study revealed that both cities experienced significant urban sprawl with USI values as follows: Jorhat (0.22), Nagaon (0.12) between 2007 and 2021. The peri-urban expansion is causing rise of mean LST by 0.51 °C and 1.7 °C for January and 2.75 °C and 3.84 °C in April for Jorhat and Nagaon city during the period 2007 to 2021, respectively. There was an increase in “strong” or “very strong” UHI zones in both cities, most notably during April. In addition, the increase in urban expansion causing uncomfortable days due to heat stress, and on the other hand reducing the occurrences of days with thermal comfort in both cities. Thus outward growth of urban areas through peri-urban development increasing UHI impacts besides causing thermal discomfort within Jorhat and Nagaon city region.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Examining Surface Urban Heat Island Effect and Thermal Stress as a Result of Peri-Urbanization at Nagaon and Jorhat City of India

  • 章节

  • 发表日期：

    2025年

查看全文
  • Rituraj Neog,
  • Shukla Acharjee,
  • Jiten Hazarika

摘要

This research has evaluated the issue of peri-urbanization impact on the phenomenon of the urban heat island (UHI) and thermal stress on the urban setting of Jorhat and Nagaon in India. The experiment incorporated the urban heat island and sprawl trend through UHI index and Urban Sprawl Index (USI) using satellite data between 2007 and 2021. Further, Thermo-hygrometric index (THI) and Net effect temperature (NET) were used in assessing thermal discomfort. The study revealed that both cities experienced significant urban sprawl with USI values as follows: Jorhat (0.22), Nagaon (0.12) between 2007 and 2021. The peri-urban expansion is causing rise of mean LST by 0.51 °C and 1.7 °C for January and 2.75 °C and 3.84 °C in April for Jorhat and Nagaon city during the period 2007 to 2021, respectively. There was an increase in “strong” or “very strong” UHI zones in both cities, most notably during April. In addition, the increase in urban expansion causing uncomfortable days due to heat stress, and on the other hand reducing the occurrences of days with thermal comfort in both cities. Thus outward growth of urban areas through peri-urban development increasing UHI impacts besides causing thermal discomfort within Jorhat and Nagaon city region.