Numerical evaluation of enhanced green infrastructures for mitigating urban heat in a desert urban setting
作者机构：Faculty of Built EnvironmentUniversity of New South WalesSydneyAustralia Department of GeographyLalbaba CollegeUniversity of CalcuttaKolkataIndia
出 版 物：《建筑模拟(英文)》 (Building Simulation)
年 卷 期：2023年第16卷第9期
页 面：1691-1712页
核心收录：
学科分类：12[管理学] 1204[管理学-公共管理] 083305[工学-城乡生态环境与基础设施规划] 08[工学] 0705[理学-地理学] 0706[理学-大气科学] 0833[工学-城乡规划学]
基 金：CAUL
主 题：green infrastructure heat mitigation urban heat WRF-SLUCM Dubai city
摘 要：The cities of desert climates are anticipated to recognize a synergy of urban heat island(UHI)and severe heat waves during *** improve the urban thermal environment,the present study aims quantitatively explore a strategically designed network of vegetation patches called green infrastructure(GI)in subtropical desert cities such as *** achieve a more comfortable temperature environment,we built and simulated four GI situations with higher GI fractions,GI25,GI50,GI75,and *** a mesoscale urban model,the mosaic approach is utilized to test potential thermal improvement and urban climate impact,and a portion of each urban grid cell in the model domain is altered with various species of urban vegetation patches by 25%,50%,75%,and 100%.The daily peak reduction in ambient temperature at 17:00LT is similar to 0.0168℃ per unit of GI increase when compared to the untreated scenario;however,the maximum anticipated daytime summer temperature decline for GI25,GI50,GI75,and GI100 is 0.6℃,1.1℃,1.4℃,and 1.7℃,*** associated reduction in nighttime ambient temperature per unit increase in the GI is 0.0432℃,with a maximum temperature drop of around 2.4℃ for the GI100 *** GI reduces the height of the planetary boundary layer(PBL)by up to 468 m,which might lead to greater pollution *** GI-based cooling has a significant influence on delayed sea breeze and humidity,it may raise the risk of heat discomfort in the indoor building *** study adds to our understanding of the potential for GI mitigation as well as the seasonal impact of developing GIs on the desert urban boundary layer.
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