当前位置: X-MOL 学术J. Geophys. Res. Atmos. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Sensitivity Study of Weather Research and Forecasting Physical Schemes and Evaluation of Cool Coating Effects in Singapore by Weather Research and Forecasting Coupled with Urban Canopy Model Simulations
Journal of Geophysical Research: Atmospheres ( IF 3.8 ) Pub Date : 2020-05-16 , DOI: 10.1029/2019jd031191
Mandi Zhou 1 , Yongping Long 2, 3 , Xiaoqin Zhang 1 , Eswara V. S. K. K. Donthu 1 , Bing Feng Ng 3 , Man Pun Wan 3
Affiliation  

Mesoscale meteorological modeling was conducted to evaluate air temperature at 2‐m above surface (T2), wind speed/direction, and relative humidity (RH) in Singapore, a tropical city, for a dry period. A sensitivity study was conducted to determine the best combination of schemes for the physical modules. The model was used to study the urban heat island (UHI) effect and urban cooling effect by applying cool coating on various urban surfaces. Maximum UHI intensity of 3.2°C is found at nighttime (21:00) at a hot spot in the Commercial/Industrial area. At nighttime, when the UHI effect is generally more intense than daytime, applying cool coating on all urban surfaces can reduce the UHI effect by about 30% in residential areas and about 6% in commercial/industrial areas. Maximum T2 reduction of 3.1°C and surface skin temperature (TSK) reduction of 9.8°C due to cool coating is found at 13:00 at certain locations. The cool urban surfaces reduce radiative heat absorption during daytime, reducing heat storage in urban structures. This leads to subsequent reduction of stored heat release from urban structures, mitigating UHI effect during nighttime. Applying cool coating on horizontal surfaces (roofs and roads) provides more cooling effect than vertical surfaces (walls). Cool roofs provide more cooling effect than cool roads since roofs cover more urban horizontal surfaces than roads do in the current setting. Part of the radiation reflected by cool roads could be absorbed by other urban structures, reducing its cooling effect as compared to cool roofs.

中文翻译:

气象研究与预报结合城市雨棚模型模拟对新加坡天气研究与预报物理方案和冷涂层效果评估的敏感性研究

在一个热带城市新加坡,进行了中尺度的气象建模,以评估地表以上2 m处的气温(T2),风速/方向和相对湿度(RH)的干燥时间。进行了敏感性研究,以确定物理模块方案的最佳组合。该模型用于通过在各种城市表面上施加冷涂层来研究城市热岛效应(UHI)和城市制冷效应。夜间(21:00)在商业/工业区的热点发现最大UHI强度为3.2°C。在夜间,当UHI效果通常比白天强时,在所有城市表面上涂冷涂料可以使居民区的UHI效果降低约30%,在商业/工业区降低约6%。最大T2降低3.1°C,表面皮肤温度(TSK)降低9。在某些位置的13:00发现由于冷涂层导致的8°C。凉爽的城市表面减少了白天的辐射热吸收,减少了城市结构中的热量存储。这导致随后减少了从城市结构中释放的蓄热,从而减轻了夜间的超热效应。与水平表面(墙壁)相比,在水平表面(屋顶和道路)上施加冷涂层可提供更多的冷却效果。凉爽的屋顶比凉爽的道路提供更多的冷却效果,因为在当前环境下,屋顶覆盖的城市水平表面比道路更多。凉爽道路反射的部分辐射可能被其他城市结构吸收,与凉爽屋顶相比,降低了其冷却效果。减少城市结构中的热量存储。这导致随后减少了从城市结构中释放的蓄热,从而减轻了夜间的超热效应。与水平表面(墙壁)相比,在水平表面(屋顶和道路)上施加冷涂层可提供更多的冷却效果。凉爽的屋顶比凉爽的道路提供更多的冷却效果,因为在当前环境下,屋顶覆盖的城市水平表面比道路还多。凉爽道路反射的部分辐射可能被其他城市结构吸收,与凉爽屋顶相比,降低了其冷却效果。减少城市结构中的热量存储。这导致随后减少了从城市结构中释放的蓄热,从而减轻了夜间的超热效应。与水平表面(墙壁)相比,在水平表面(屋顶和道路)上施加冷涂层可提供更多的冷却效果。凉爽的屋顶比凉爽的道路提供更多的冷却效果,因为在当前环境下,屋顶覆盖的城市水平表面比道路更多。凉爽道路反射的部分辐射可能被其他城市结构吸收,与凉爽屋顶相比,降低了其冷却效果。凉爽的屋顶比凉爽的道路提供更多的冷却效果,因为在当前环境下,屋顶覆盖的城市水平表面比道路更多。凉爽道路反射的部分辐射可能被其他城市结构吸收,与凉爽屋顶相比,降低了其冷却效果。凉爽的屋顶比凉爽的道路提供更多的冷却效果,因为在当前环境下,屋顶覆盖的城市水平表面比道路更多。凉爽道路反射的部分辐射可能被其他城市结构吸收,与凉爽屋顶相比,降低了其冷却效果。
更新日期:2020-06-29
down
wechat
bug