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dc.contributor.authorSharmin, Taniaen
dc.contributor.authorSteemers, K.en
dc.contributor.authorMatzarakis, A.en
dc.date.accessioned2018-09-20T13:20:40Z
dc.date.available2018-09-20T13:20:40Z
dc.date.issued2017-07-15
dc.identifier.citationSharmin, T., Steemers, K. and Matzarakis, A. (2017) Microclimatic modelling in assessing the impact of urban geometry on thermal urban environment. Sustainable Cities and Society, 34, pp.293-308.en
dc.identifier.issn2210-6707
dc.identifier.urihttp://hdl.handle.net/2086/16614
dc.descriptionThe file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link.en
dc.description.abstractDiversity in urban geometry can create significant variation in microclimatic conditions. Especially, in tropical warm-humid context, deep urban canyons with variable building heights perform better than uniform canyons, because taller buildings rising above those around them reduce solar gain and enhance wind speed at the pedestrian level. Field measurements in Dhaka comparing the varying traditional urban forms with the more regular formal residential areas have revealed an average air temperature (Ta) difference of 3.30C and a maximum difference of 6.20C, and a mean radiant temperature (Tmrt) difference of 10.00C. The aim of this paper is to understand the responsiveness of the microclimate simulation tool ENVI-met V4 in identifying the variation in urban geometry as reported in the field measurements. The study aims to make specific comparisons between the measured and the simulated data by analysing a particular challenge in complex geometry. It attempts to demonstrate how ENVI-met could benefit from using the correct input as the boundary condition. While the modelling tool aims to produce good results by using synoptic weather information as boundary conditions, this study suggests that it is important to use representative data from the actual site and that hourly input of climatic variables as boundary information can produce the best results. Results show that modelling is able to predict the relative variations in Tmrt conditions between sites, although highly overestimated. However, in terms of Ta, modelling was unable to produce any variations between different urban geometry characteristics. This indicates that, although ENVI-met can produce sufficiently good results in predicting Ta when hourly forcing is used, it is unable to distinguish between the precise details in urban geometry features that can cause significant variations in microclimatic conditions in real situations. Therefore, further assessment of microclimatic variables is needed for using such modelling techniques in order to evaluate the impact of diversity in urban geometry.en
dc.language.isoenen
dc.publisherElsevieren
dc.subjectENVI-met V4en
dc.subjecturban geometryen
dc.subjectmorphological diversityen
dc.subjectmicroclimate monitoringen
dc.subjecttropical climateen
dc.titleMicroclimatic modelling in assessing the impact of urban geometry on urban thermal environmenten
dc.typeArticleen
dc.identifier.doihttps://doi.org/10.1016/j.scs.2017.07.006
dc.peerreviewedYesen
dc.funderThis paper is drawn from research funded by the Schlumberger Foundation at the University of Cambridge, Department of Architecture.en
dc.projectidSchlumberger Foundationen
dc.cclicenceCC BYen
dc.date.acceptance2017-07-13en
dc.exception.reasonauthor was not DMU staff when publisheden
dc.researchinstituteInstitute of Architectureen
dc.exception.ref2021codes254aen


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