Spatiotemporal analysis of road surface temperature (RST) and building wall temperature (BWT) and its relation to the tr
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Spatiotemporal analysis of road surface temperature (RST) and building wall temperature (BWT) and its relation to the traffic volume at Jorhat urban environment, India Rituraj Neog1 · Shukla Acharjee1 · Jiten Hazarika2 Received: 2 September 2019 / Accepted: 12 October 2020 © Springer Nature B.V. 2020
Abstract The study analyzed the pattern of building wall temperature (BWT) and road surface temperature (RST) in both urban and suburban area and its relation to traffic volume at Jorhat municipal area. The surface temperature pattern is assessed using the FLIR TG-165 spot thermal imaging camera and HTC MT-4 IR thermometer, while traffic volume is investigated through schedule survey and video recording over the selected urban roads. The study revealed a positive correlation between traffic volumes with BWT and RST, though the correlation is quite stronger with RST. The higher positive relationship between traffic volume and RST has been noticed mostly in the shadowing part of the surface, whereas on the other hand, the relationship pattern of BWT with traffic volume is also found noticeably higher at the shadowed part of the surface. In both analyses, the relationship between traffic with RST and BWT is identified as remarkably stronger at midday and afternoon period. The urban areas with maximum traffic congestion are identified as accountable for the higher BWT and RST. Keywords Road surface temperature (RST) · Building wall temperature (BWT) · Traffic · Sunlight and shadow
1 Introduction Urban heat island is an environmental phenomena characterized by significantly higher temperatures in urban areas contrary to rural surroundings (Zhu et al. 2017). It has become a major environmental issue due to urbanization and which ultimately leads to an intense * Rituraj Neog [email protected] Shukla Acharjee [email protected] Jiten Hazarika [email protected] 1
Centre for Studies in Geography, Dibrugarh University, Dibrugarh, Assam, India
2
Department of Statistics, Dibrugarh University, Dibrugarh, Assam, India
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heating of the urban environment (Zhou et al. 2016; Li et al. 2017). With the progress of urban heat island phenomena, temperature varies which leads to loses of biological control and air quality and influences human health and energy consumption (Li et al.2012; Sinha et al. 2014; Cetin 2015a, 2016a; Cetin and Zeren 2016; Vij et al. 2017; Scharsich et al. 2017; Cetin et al. 2017, 2018a, b and 2019a, c). Heating in an urban area is due to the stored and trapped energy by the complex urban structure with anthropogenic heat from vehicles, factories and other heat sources (Falahatkar et al. 2011). The heat-retaining substances such as building wall and road surfaces, i.e. asphalt and concrete, are responsible for the urban heat island effect (Md Din et al. 2012). It not only develops a state of thermal discomfort in urban areas (Zhou et al. 2014) but also deteriorates biodiversity (Li and Norforda 2016), quality of air (Grimm et al. 2008) and energy uti
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