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Sustainability 2016, 8(9), 895; doi:10.3390/su8090895

Temporal Effects of Environmental Characteristics on Urban Air Temperature: The Influence of the Sky View Factor

Department of Urban Planning and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
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Author to whom correspondence should be addressed.
Academic Editor: Tan Yigitcanlar
Received: 4 July 2016 / Revised: 15 August 2016 / Accepted: 30 August 2016 / Published: 5 September 2016
(This article belongs to the Section Sustainable Urban and Rural Development)
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Abstract

This study examines the relationship between air temperature and urban environment indices, mainly focusing on sky view factor (SVF) in Seoul, Korea. We use air temperature data observed from 295 automatic weather stations (AWS) during the day and night in Seoul. We conduct a spatial regression analysis to capture the effect of spatial autocorrelation in our data and identify changes in the effects of SVF on air temperature, while conducting the regression model for each dataset according to the floor area ratio (FAR). The findings of our study indicate that SVF negatively affects air temperature during both day and night when other effects are controlled through spatial regression models. Moreover, we address the environmental indices associated with day-time and night-time air temperatures and identify the changing effects of SVF on air temperature according to the areal floor area ratio of the analysis datasets. This study contributes to the literature on the relationship between SVF and air temperature in high-density cities and suggests policy implications for improving urban thermal environments with regard to urban design and planning. View Full-Text
Keywords: urban heat island; urban thermal environment; air temperature; sky view factor; urban density; spatial statistical model urban heat island; urban thermal environment; air temperature; sky view factor; urban density; spatial statistical model
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ha, J.; Lee, S.; Park, C. Temporal Effects of Environmental Characteristics on Urban Air Temperature: The Influence of the Sky View Factor. Sustainability 2016, 8, 895.

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