The urban heat island (UHI) effect poses a significant challenge for cities like Pohang, South Korea, which suffer from environmental pollution. Integrating a ventilation corridor into city planning can mitigate this issue. Despite wind’s potential as a resource for urban areas, its role remains under-studied in urban planning and design. To address this gap, this study analyzes the wind environment of Pohang City to identify effective strategies for reducing the UHI effect through the implementation of wind corridors, thereby enhancing the city’s thermal environment and sustainability. We used the KLAM_21 model to simulate and analyze the cold airflow. The results indicate that the land cover of Pohang, including residential and commercial areas, consists of urbanized dry areas. The wind direction over the past 10 years (2013–2022) has generally been west–southwest (247.5°). The cold air height and flow direction range expanded around the Hyeongsan River, eventually affecting the central city after 5 h. In the simulations, cold air accumulated above 30 m at specific locations near the valley’s base. After 2 h, the flow range of the cold air height increased. The green area ratio (GAR) and cold air speed positively correlated (+0.153). Thus, creating a wind-corridor forest could effectively address Pohang’s fine dust and UHI phenomena.

中文翻译：

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减少细尘、缓解热岛效应：韩国浦项市冷气流分析

城市热岛效应给韩国浦项等遭受环境污染的城市带来了重大挑战。将通风走廊纳入城市规划可以缓解这个问题。尽管风能作为城市地区的资源具有潜力，但其在城市规划和设计中的作用仍未得到充分研究。为了解决这一差距，本研究分析了浦项市的风环境，以确定通过实施风廊道来减少城市热岛效应的有效策略，从而改善城市的热环境和可持续性。我们使用KLAM_21模型对冷气流进行模拟和分析。结果表明，浦项的土地覆盖（包括住宅区和商业区）由城市化干旱地区组成。过去10年（2013年至2022年）的风向总体为西-西南风（247.5°）。冷空气高度和流向范围以衡山江为中心扩大，5小时后最终影响中心城区。在模拟中，冷空气在山谷底部附近的特定位置积聚在 30 m 以上。2小时后，冷空气高度的流动范围增大。绿地面积比（GAR）与冷空气速度呈正相关（+0.153）。因此，建立风廊林可以有效解决浦项的细尘和城市热岛现象。