气象科学2017，Vol.37Issue(1)：41-50,10.DOI:10.3969/2015jms.0043
城市小区建筑物和屋顶绿化对小区气象环境影响的数值模拟研究
A numerical simulation of the effects of buildings and green roofs on the meteorology and environment in the urban sub-domain
摘要
Abstract
In order to study the influences of urbar buildings and green roofs on meteorology and en vironment of urban sub-domain,a developed urban sub-domain scale model was used to simulate a sensitivity experiment on sub-domain next to Qiantang river of Hangzhou.Results show that buildings in the sensitive sub-domain had a significant effect on wind field at 10 m,which decreased by 0.56 m·s-1.The range where the influence of the buildings on the wind speed was 500 m on the wind direction,500-600 m on downwind direction,200 m on the cross of the wind direction and the influencing height was more than twice the averaged height of buildings in the vertical direction.The time reaching 1％ pollutant concentration delayed 7.6 mins in the low layer due to the existence of buildings.100％ roof green area reduced the surface temperature by 0.56 ℃,temperature at 5 m by 0.7 ℃ and temperature above average height of buildings by 0.94 ℃.100％ roof green area also increased the horizontal velocity at 10 m by 0.14 m.s-1.The green roofs in the sensitive sub-domain also reduced horizontal wind speed at downwind area significantly.Range of downwind effects of green roofs reached 600-800 m.关键词
小区建筑物/风场/污染扩散/屋顶绿化/数值模拟Key words
Buildings in sub-domain/Wind field/Pollutant diffusion/Green roofs/Numerical simulation分类
天文与地球科学引用本文复制引用
李佳慧,刘红年,马万里,王学远,蔡菊珍..城市小区建筑物和屋顶绿化对小区气象环境影响的数值模拟研究[J].气象科学,2017,37(1):41-50,10.基金项目
国家重点基础研究发展规划(973计划)项目(2014CB441203) （973计划）
国家自然科学基金资助项目(41575141,41305006) （41575141,41305006）
江苏省自然科学基金资助项目(BK2012314) （BK2012314）
