Quantifying the Effect of Building Shadowing and Cloudiness on Mean Radiant Temperature in Singapore
Name
atmosphere-12-01012.pdf
Size
11.78 MB
Format
Adobe PDF
Checksum (MD5)
0e3730fef1c4ab95cd67ab13e18936a9
Author(s)
Acero, Juan A.
Koh, Elliot J. Y.
Tan, Yon Sun
Norford, Leslie K.
Date Issued
August 6, 2021
Publisher
Multidisciplinary Digital Publishing Institute
Citation
Atmosphere 12 (8): 1012 (2021)
Version
Final published version
Abstract
Improving the quality of life in urban areas has become a major concern in the last few decades. With a constantly increasing urban population and in a climate change context, detailed knowledge of the impact of urban elements on the outdoor thermal environment is relevant. In this work, we present the results of several climatic campaigns carried out in Singapore aiming to evaluate local urban climate variables. Sensors were deployed simultaneously in different sites. The effect of building shadowing in the diurnal cycle of mean radiant temperature (Tmrt) is evaluated in different seasons. Although during the Inter-Monsoon season, mean Tmrt reduction due to building shadow is ≈19 °C, during clear skies days, it can be reduced by ≈30 °C. The Tmrt difference between sites is analyzed based on the weather conditions, the sky view factor (SVF), and the type of surrounding urban elements. Under building shadow conditions, higher SVF showed higher Tmrt values, although no correlation was found between Tmrt and diffuse solar radiation (measured above the urban canopy). The results suggest a relevant contribution of other radiation components (e.g., longwave radiation). The quantitative analysis of the Tmrt provided in this work is relevant for outdoor thermal comfort strategies in tropical areas such as Singapore.
MIT Department
Singapore-MIT Alliance in Research and Technology (SMART)
Massachusetts Institute of Technology. Department of Architecture
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.3390/atmos12081012
