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http://dx.doi.org/10.9715/KILA.2016.44.1.093

A Study of the Urban Tree Canopy Mean Radiant Temperature Mitigation Estimation  

An, Seung Man (Housing and Research Division, Korea Research Institute for Human Settlements)
Son, Hak-gi (Korea Rural Economic Institute)
Lee, Kyoo-Seock (Dept. of Landscape Architecture, Sungkyunkwan University)
Yi, Chaeyeon (Weather Information Service Engine Project, Korea Meteorological Administration)
Publication Information
Journal of the Korean Institute of Landscape Architecture / v.44, no.1, 2016 , pp. 93-106 More about this Journal
Abstract
This study aimed to estimate and evaluate the thermal mitigation of the urban tree canopy on the summer outdoor environment by quantitative use of mean radiant temperature. This study applied the SOLWEIG model based $T_{mrt}$ comparison method by using both (1) urban tree canopy presence examples and (2) urban tree canopy absence examples as constructed from airborne LiDAR system based three-dimensional point cloud data. As a result, it was found that an urban tree canopy can provide a decrease in the entire domain averaged daily mean $T_{mrt}$ about $5^{\circ}C$ and that the difference can increase up to $33^{\circ}C$ depending both on sun position and site conditions. These results will enhance urban microclimate studies such as indices (e.g., wind speed, humidity, air temperature) and biometeorology (e.g., perceived temperature) and will be used to support forest based public green policy development.
Keywords
Urban Tree Canopy; Thermal Comfort; Sky View Factor; Three-dimensional Point Cloud; Fish-eye Photography; SOLWEIG Model;
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