广东区域通风廊道识别初探
A Study on Regional Ventilation Corridor in Guangdong
杨土士 1王伟文 2常鸣 2王雪梅2
作者信息
- 1. 中国气象局广州热带海洋气象研究所,广东 广州 510641
- 2. 暨南大学环境与气候研究院,广东 广州 511443;粤港澳环境质量协同创新联合实验室,广东 广州 511443
- 折叠
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.
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.
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Key words
ventilation corridor/urbanization/surface roughness/urban heat island/numerical simulation/land use/land cover引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据