摘要
文章以水网城市武汉为例,旨在讨论城市与水体之间的气候调节影响作用,并找到应对城市高强度发展的生态空间调节策略,改善城市气候环境。在中尺度气象模式中构建了高分辨率城市冠层模型,模拟分析了不同季节水体的微气候调节作用,发现:夏季水体对城区有明显的降温效果,日间平均降温幅度达到0.5℃;过渡季(秋季)日出前水体对地表气温增幅达0.6℃,能够有效缓解辐射逆温现象;冬季夜间水体将主城区风速提升了0.2m/s,能够帮助城市空气污染物的疏散,减少雾霾现象。此外,建筑密度的升高增强了水体与高空的对流换热,而城市容积率的升高则削弱了水体的降温效果。
Taking Wuhan,a water network city,as an example,this study aims to discuss the role of climate regulation influence between cities and water bodies,and to find ecological spatial regulation strategies to cope with high-intensity urban development and improve the urban climate environment.In this paper,a high-resolution urban canopy model(NUDAPT)is constructed in a mesoscale meteorological model(WRF)to simulate and analyse the microclimatic regulating effect of water bodies in different seasons.It finds that water bodies have a significant cooling effect on urban areas in summer,with an average daytime cooling of 0.5℃.In autumn,the water bodies increase the surface temperature before sunrise by 0.6℃,which can effectively mitigate the radiation inversion phenomenon.At night in winter the water bodies raise the wind speed in the main urban area by 0.2 m/s,which can help evacuate urban air pollutants and reduce the haze phenomenon.Besides,it finds that increased building density enhances convective heat exchange between water bodies and high altitudes,while increased urban volume ratio weakens the cooling effect of water bodies.
作者
周雪帆
张帅
ZHOU Xuefan;ZHANG Shuai
出处
《新建筑》
2023年第6期131-137,共7页
New Architecture
基金
国家自然科学基金青年项目(51708237)
华中科技大学自主创新基金项目(2172019)
湖北省自然科学基金项目(2023443)。
关键词
城市空间形态
城市水体
中尺度气象模拟模型
高分辨率城市冠层模型
城市气候环境
urban morphology
urban water bodies
Weather Research and Forecasting Model
National Urban Database and Access Portal Tool
urban climatic environment
