| 摘要: |
| 以广东省为例，通过绘制空气动力学粗糙长度，从动力学角度初步识别出通风潜力；利用数值模拟输出的冬夏季平均水平风场，结合近地面温度和粗糙长度加权后得到通风指数，发现城际尺度风道分布受季节热力差异影响，冬季通风能力显著优于夏季。将通风评价结果划分为4个等级，从广东全域尺度分冬、夏两季识别了潜在风道。 |
| 关键词: 通风廊道 城市化 地表粗糙度 城市热岛 数值模拟 土地利用 土地覆盖 |
| DOI：10.16032/j.issn.1004-4965.2024.041 |
| 分类号: |
| 基金项目: |
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| A Study on Regional Ventilation Corridor in Guangdong |
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YANG Tushi1, WANG Weiwen2,3, CHANG Ming2,3, WANG Xuemei2,3
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1. Guangzhou Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou 510640, China;2. Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China;3. Guangdong- Hongkong-Macao Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, China
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| Abstract: |
| The present study aimed to identify the natural ventilation potential in Guangdong Province by employing the concept of roughness length from the perspective of aerodynamics. A ventilation index was derived using numerically simulated average horizontal wind field data in winter and summer, and the weighted combination of near-surface temperature and roughness length. It was found that the distribution of inter-city ventilation corridors is affected by seasonal thermal differences, with significantly better ventilation capacity in winter compared to summer. The ventilation evaluation results were categorized into four grades, and potential ventilation corridors were identified for winter and summer in Guangdong. |
| Key words: ventilation corridor urbanization surface roughness urban heat island numerical simulation land use land cover |
