[{"month":"12","language":[{"iso":"eng"}],"volume":246,"publication_status":"published","quality_controlled":"1","date_created":"2026-07-27T12:30:24Z","article_processing_charge":"No","author":[{"first_name":"Taihan","last_name":"Chen","full_name":"Chen, Taihan"},{"first_name":"Naika","full_name":"Meili, Naika","last_name":"Meili"},{"first_name":"Simone","last_name":"Fatichi","id":"cf8e546b-a9b0-11f0-a43b-aa89ed1b56d6","full_name":"Fatichi, Simone"},{"last_name":"Hang","full_name":"Hang, Jian","first_name":"Jian"},{"last_name":"Tan","full_name":"Tan, Puay Yok","first_name":"Puay Yok"},{"first_name":"Chao","full_name":"Yuan, Chao","last_name":"Yuan"}],"publication":"Building and Environment","scopus_import":"1","extern":"1","article_number":"111006","doi":"10.1016/j.buildenv.2023.111006","type":"journal_article","publication_identifier":{"eissn":["1873-684X"],"issn":["0360-1323"]},"title":"Effects of tree plantings with varying street aspect ratios on the thermal environment using a mechanistic urban canopy model","citation":{"short":"T. Chen, N. Meili, S. Fatichi, J. Hang, P.Y. Tan, C. Yuan, Building and Environment 246 (2023).","mla":"Chen, Taihan, et al. “Effects of Tree Plantings with Varying Street Aspect Ratios on the Thermal Environment Using a Mechanistic Urban Canopy Model.” <i>Building and Environment</i>, vol. 246, 111006, Elsevier, 2023, doi:<a href=\"https://doi.org/10.1016/j.buildenv.2023.111006\">10.1016/j.buildenv.2023.111006</a>.","chicago":"Chen, Taihan, Naika Meili, Simone Fatichi, Jian Hang, Puay Yok Tan, and Chao Yuan. “Effects of Tree Plantings with Varying Street Aspect Ratios on the Thermal Environment Using a Mechanistic Urban Canopy Model.” <i>Building and Environment</i>. Elsevier, 2023. <a href=\"https://doi.org/10.1016/j.buildenv.2023.111006\">https://doi.org/10.1016/j.buildenv.2023.111006</a>.","apa":"Chen, T., Meili, N., Fatichi, S., Hang, J., Tan, P. Y., &#38; Yuan, C. (2023). Effects of tree plantings with varying street aspect ratios on the thermal environment using a mechanistic urban canopy model. <i>Building and Environment</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.buildenv.2023.111006\">https://doi.org/10.1016/j.buildenv.2023.111006</a>","ieee":"T. Chen, N. Meili, S. Fatichi, J. Hang, P. Y. Tan, and C. Yuan, “Effects of tree plantings with varying street aspect ratios on the thermal environment using a mechanistic urban canopy model,” <i>Building and Environment</i>, vol. 246. Elsevier, 2023.","ista":"Chen T, Meili N, Fatichi S, Hang J, Tan PY, Yuan C. 2023. Effects of tree plantings with varying street aspect ratios on the thermal environment using a mechanistic urban canopy model. Building and Environment. 246, 111006.","ama":"Chen T, Meili N, Fatichi S, Hang J, Tan PY, Yuan C. Effects of tree plantings with varying street aspect ratios on the thermal environment using a mechanistic urban canopy model. <i>Building and Environment</i>. 2023;246. doi:<a href=\"https://doi.org/10.1016/j.buildenv.2023.111006\">10.1016/j.buildenv.2023.111006</a>"},"year":"2023","publisher":"Elsevier","das_tickbox":"1","day":"01","oa_version":"None","_id":"22561","status":"public","intvolume":"       246","abstract":[{"text":"Urban tree planting is an effective strategy to reduce temperature locally and eventually mitigate Urban Heat\r\nIsland. Although its cooling effects have been widely reported, understanding of coupling effects of street\r\nmorphologies and tree characteristics on thermal environment is insufficient, especially in high-density cities. A\r\nparametric study is conducted to investigate effects of leaf area index (LAI = 1.0,2.0,3.0,4.0,5.0,6.0) and tree\r\ncrown radius (rtree = 2.0,3.4,4.4,5.0 m) on thermal environment inside streets with various aspect ratios (street\r\nheight/width, H/W = 1.0–5.0). A mechanistic urban canopy model Urban Tethys-Chloris (UT&C) is selected and\r\nintegrated with a new semi-empirical wind parameterization based on drag coefficients and frontal area densities\r\nof buildings and trees. Modified UT&C is validated by a unique and controllable scaled outdoor experiment. The\r\nresearch outputs can be summarized as follows: (1) Calculated air temperature (Ta), wind speed (V), and thermal\r\ncomfort indices (Mean Radiant Temperature (Tmrt) and Universal Thermal Climate Index (UTCI)) are in good\r\nagreement with results from scaled outdoor experiments, while slight overestimation of relative humidity (RH)\r\noccurs in tree cases; (2) Increasing LAI and rtree both bring stronger cooling effects by up to 20.2 ◦C (Tmrt) and\r\n4.0 ◦C (UTCI); (3) Narrower streets weaken trees’ cooling effects and increasing LAI and rtree could be less\r\nefficient for higher H/W than lower H/W; (4) LAI = 4.0 and rtree = 5.0 m are optimal for wide streets (H/W =\r\n1.0–3.0) to provide maximum UTCI cooling (about 4.0 ◦C), while LAI = 4.0 and rtree = 3.4 m are suggested for\r\nnarrow streets (H/W = 3.0–5.0). Our study provides useful information on evidence-based urban tree selection\r\nstrategies for urban planning and design. ","lang":"eng"}],"user_id":"ba8df636-2132-11f1-aed0-ed93e2281fdd","date_updated":"2026-08-12T08:37:07Z","article_type":"original","fulldoi":"https://doi.org/10.1016/j.buildenv.2023.111006","keyword":["Urban canopy model","Scaled outdoor experiment","Street aspect ratio","Urban vegetation","Pedestrian thermal comfort"],"date_published":"2023-12-01T00:00:00Z","OA_type":"closed access"}]