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<p>The effects of urban heat islands (UHIs) have intensified with increasing urbanization and industrialization of natural environments. This study aims to identify the formation of UHIs in an industrial district by analyzing possible correlations between the variables that influence the urban microclimate. Data were collected in situ over 15 days, focusing on air temperature and relative humidity in both an industrial neighborhood (DI) and a central residential area (R) in Uberlândia, MG. To estimate UHI intensity, data from a meteorological station at the airport were used. Air temperature (Tar) was measured, and land surface temperature (LST) was simulated. The peak UHI intensity occurred at 9 p.m, reaching 1.5&#xa0;°C in R and 5&#xa0;°C in DI. In the R area, wind speed (WS) and sky view factor (SVF) (0.505), as well as relative humidity (RH) and turbulent kinetic energy (TKE) (0.603), showed strong positive correlations. Conversely, Tar and RH were strongly negatively correlated (-0.981). In the industrial area (DI), LST and Tar (0.603), SVF and WS (0.704), WS and wind direction (WD) (0.643), WD and SVF (0.694), and again RH and TKE (0.705) exhibited strong correlations, highlighting the significance of wind at this location, particularly when supported by the orientation of the main streets. Given the recorded UHI intensity and the most impactful variables detected for DI, urban planning that emphasizes improved distribution and layout of streets and avenues—positioning them to favor the predominant WD, maintaining WS, and consequently enhancing heat dissipation—along with increased afforestation and judicious application of surface materials, could help cool the area. </p>

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Comparative study of microclimatic variables in industrial and residential areas of a tropical city using computational simulation and multivariate analysis

  • 期刊论文

  • 发表日期：

    2025年1月10日

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  • Angela Maria de Arruda,
  • António Lopes,
  • Érico Masiero

摘要

The effects of urban heat islands (UHIs) have intensified with increasing urbanization and industrialization of natural environments. This study aims to identify the formation of UHIs in an industrial district by analyzing possible correlations between the variables that influence the urban microclimate. Data were collected in situ over 15 days, focusing on air temperature and relative humidity in both an industrial neighborhood (DI) and a central residential area (R) in Uberlândia, MG. To estimate UHI intensity, data from a meteorological station at the airport were used. Air temperature (Tar) was measured, and land surface temperature (LST) was simulated. The peak UHI intensity occurred at 9 p.m, reaching 1.5 °C in R and 5 °C in DI. In the R area, wind speed (WS) and sky view factor (SVF) (0.505), as well as relative humidity (RH) and turbulent kinetic energy (TKE) (0.603), showed strong positive correlations. Conversely, Tar and RH were strongly negatively correlated (-0.981). In the industrial area (DI), LST and Tar (0.603), SVF and WS (0.704), WS and wind direction (WD) (0.643), WD and SVF (0.694), and again RH and TKE (0.705) exhibited strong correlations, highlighting the significance of wind at this location, particularly when supported by the orientation of the main streets. Given the recorded UHI intensity and the most impactful variables detected for DI, urban planning that emphasizes improved distribution and layout of streets and avenues—positioning them to favor the predominant WD, maintaining WS, and consequently enhancing heat dissipation—along with increased afforestation and judicious application of surface materials, could help cool the area.