The study determines the impact of rooftop greening in an urban residential area in the microclimate context in Dhaka City Corporation, where the level of carbon sequestration from a green roof of an existing building and it's ability to reach the human comfort zone is focused. The study showed the nature of temperature variation between the green-roofed and bare-roofed buildings. Ten stations were chosen from the study area, where 20 buildings were studied, taking two neighboring buildings (a green- and a bare-roofed) from each station. Air temperature, relative humidity, and air velocity were collected from all floors and rooftops of the selected buildings. The Discomfort Index and Robaa Index have been measured to detect the human comfort zone. Annual carbon sequestration by the plants of the green rooftops was assessed. Findings revealed a significant difference (1^o ~ 3.5 °C) of the air temperature between the adjacent bare-roofed and green-roofed buildings. The thermal difference was significant during diurnal hours. The Discomfort Index and Robaa Index were lower in the green-roofed buildings than those of bare-roofed buildings. The annual carbon sequestration in the green roofs ranged from 20.6 tC/ha to 125.4 tC/ha, whereas the equivalent CO₂ ranged from 84 to 460 t/ha.

该研究确定了在达卡城市公司小气候环境下城市住宅区屋顶绿化的影响，其中关注现有建筑物绿色屋顶的碳封存水平及其达到人类舒适区的能力。研究显示了绿色屋顶和裸屋顶建筑之间温度变化的本质。从研究区域中选择了 10 个站点，其中研究了 20 座建筑物，每个站点取两个相邻的建筑物（绿色和裸屋顶）。从选定建筑物的所有楼层和屋顶收集空气温度、相对湿度和空气流速。已测量不适指数和 Robaa 指数以检测人体舒适区。评估了绿色屋顶植物的年度固碳量。^o  ~ 3.5 °C) 相邻裸屋顶和绿屋顶建筑物之间的空气温度。昼夜温差显着。绿屋顶建筑的不适指数和Robaa 指数低于裸屋顶建筑。绿色屋顶的年固碳量为 20.6 tC/ha 至 125.4 tC/ha，而当量 CO ₂为 84 至 460 t/ha。