热带气象学报2025，Vol.41Issue(1)：55-65,11.DOI:10.16032/j.issn.1004-4965.2025.004
基于ENVI-met的广州市街区夏季热环境和热舒适度变化数值模拟
ENVI-met Simulation of Summer Thermal Environment and Thermal Comfort Changes in Guangzhou Urban Blocks
摘要
Abstract
Based on the ENVI-met microclimate numerical model,this study simulated and analyzed the thermal environment and comfort responses within Guangzhou urban blocks during periods of high temperature in summer.The results showed that the model accurately reproduced the daily variations in regional temperature and humidity,with root mean square errors of 0.99 ℃ and 6.1％,respectively.The green coverage of the underlying surface within the study area significantly impacted the temperature at pedestrian height.The temperature of local heat island in the hardened ground area of meteorological observation field was close to 38 ℃,while areas shaded by buildings and vegetation experienced localized cooling.Extremely hot areas(with a physiological equivalent temperature exceeding 41 ℃)accounted for 66.82％of the study area,primarily observed at hardened ground.In the absence of vegetation,the overall temperature within the study area increased,with the average regional temperature rising by 2.0 ℃,the high-temperature area expanding by 34.4％,and the cooling effect of vegetation extending up to 13 m vertically.The maximum wind speed increase was 1.0 m·s-1,the area with higher mean radiant temperature(MRT,MRT＞58 ℃)expanded by 36.96％,and the extremely hot areas increased by 23.13％.Therefore,a favorable wind environment,effective use of shade,and well-planned greenery may help optimize outdoor thermal comfort within urban blocks.关键词
数值模式ENVI-met/广州市街区/热环境/热舒适度Key words
Guangzhou model/Guangzhou urban streets/thermal environment/thermal comfort分类
天文与地球科学引用本文复制引用
李海燕,孙家仁,李江波,潘蔚娟,吴晓绚,翟志宏..基于ENVI-met的广州市街区夏季热环境和热舒适度变化数值模拟[J].热带气象学报,2025,41(1):55-65,11.基金项目
广东省气象局科学技术研究项目(GRMC2022M21) （GRMC2022M21）
广州市气象学会科研项目(M202218) （M202218）
广东省自然科学基金重点项目(2016A030311007) （2016A030311007）
广东省自然科学基金面上项目(2023A1515012240)共同资助 （2023A1515012240）
