Please use this identifier to cite or link to this item: https://doi.org/10.1061/(ASCE)UP.1943-5444.0000014
Title: Air temperature distribution and the influence of sky view factor in a green singapore estate
Authors: Hien, W.N. 
Jusuf, S.K. 
Keywords: Air temperature distribution
Correlation analysis
Green Singapore estate
Sky view factor (SVF)
Tropical climate
Issue Date: 2010
Source: Hien, W.N., Jusuf, S.K. (2010). Air temperature distribution and the influence of sky view factor in a green singapore estate. Journal of Urban Planning and Development 136 (3) : 261-272. ScholarBank@NUS Repository. https://doi.org/10.1061/(ASCE)UP.1943-5444.0000014
Abstract: This paper investigates, first, the influence of vegetations to the air temperature distribution and, second, the correlation between air temperature and sky view factor (SVF) to understand whether the trees have adverse impact especially to the nighttime air temperature since trees reduce the SVF values. Air temperature and SVF measurements were conducted in a green Singapore estate, One-North, from November 1, 2007 to March 31, 2008. The field measurement results show that daytime air temperature difference between dense greenery area and less greenery area is 2.4 K and the nighttime air temperature difference is 1.1 K. The temperature maps study provides a clear picture on the air temperature distribution across the One-North estate and concludes that parks or clusters of trees are able to maintain both daytime and nighttime air temperature at a cool level. Statistical analysis was conducted to analyze the correlation between air temperature and SVF. During daytime, there is a significant and good correlation between air temperature and SVF. The higher the SVF, the higher is the air temperature. Trees reduce the sky openness and provide shading to the environment. At nighttime, there is a weak correlation between air temperature and SVF. Thus, there is no adverse impact, i.e., reduction of nighttime net long-wave loss, due to the reduction of SVF by trees. © 2010 ASCE.
Source Title: Journal of Urban Planning and Development
URI: http://scholarbank.nus.edu.sg/handle/10635/46028
ISSN: 07339488
DOI: 10.1061/(ASCE)UP.1943-5444.0000014
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