A novel stomatal resistance equation for modeling heat and mass transfer of extensive vegetative roofs

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dc.article.number128176
dc.catalogadorgrr
dc.contributor.authorRojas Mondaca, Aldo Nicolás
dc.contributor.authorSteinfort Needham, Úrsula Carla
dc.contributor.authorVera Araya, Sergio Eduardo
dc.date.accessioned2024-12-10T16:21:38Z
dc.date.available2024-12-10T16:21:38Z
dc.date.issued2024
dc.description.abstractThe cooling potential of vegetated roofs depends on the stomatal resistance (rs), leaf area index, and other factors. Sailor (2008) and Tabares-Velasco and Srebric (2012) are among the most cited heat and mass transfer vegetative roof models. They include different equations to estimate rs, which show large differences, and significantly overestimate rs under certain conditions. Therefore, their models offer particular opportunities for improvement to reflect the actual vegetation cooling potential. This is necessary to predict the impact of vegetative roofs more accurately on the building energy performance and the urban heat island effect. The rs of both vegetative roof heat and mass transfer models have been developed based on studies with species that are not commonly planted on vegetative roofs. It was found that both models overestimate the rs under certain conditions that could turn into the underestimation of the transpiration rates and the cooling potential. Consequently, this paper aims to develop a novel equation for rs based on field measurements in a semiarid climate. The species tested were Glandularia berterii (C3), Selliera radicans (C3), Phyla reptans (C3), Aptenia cor-difolia (CAM), Sedum palmeri (CAM), and Sedum spurium (CAM). A New Linear Model (NLM) was formulated to estimate rs. The regressors of NLM are minimum stomatal resistance (rs,min), incident solar radiation (Rsh), leaf area index (LAI), substrate volumetric water content (VWC), and vapor pressure difference (VPD). The results show that rs,min and Rsh reflect 64 % of rs; the species with higher cooling potential were Selliera radicans, Sedum palmeri, and Sedum spurium due to higher LAI and lower/moderate rs,min; and, the NLM showed a better agree-ment with the measured rs, correcting points where Sailor (2008) and Tabares-Velasco and Srebric (2012) equations significantly overestimated rs. Finally, it was demonstrated that the developed NLM better represents the stomatal behavior and distinguishes the responses between C3 and CAM species.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.ufug.2023.128176
dc.identifier.eissn1610-8167
dc.identifier.issn1618-8667
dc.identifier.scopusidSCOPUS_ID:2-s2.0-85180515200
dc.identifier.urihttps://doi.org/10.1016/j.ufug.2023.128176
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/89149
dc.identifier.wosidWOS:001138807500001
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Steinfort Needham, Úrsula Carla; S/I; 1020220
dc.information.autorucEscuela de Ingeniería; Rojas Mondaca, Aldo Nicolás; 0009-0008-5485-4171; 223145
dc.information.autorucEscuela de Ingeniería; Vera Araya, Sergio Eduardo; 0000-0002-7257-0710; 1659
dc.language.isoen
dc.nota.accesocontenido parcial
dc.publisherElsevier GMBH
dc.revistaUrban Forestry and Urban Greening
dc.rightsacceso restringido
dc.subjectC3 and CAM plants
dc.subjectCooling potential
dc.subjectGreen roofs
dc.subjectEcoroofs
dc.subjectStomatal resistance
dc.subjectStomatal Conductance
dc.subject.ddc600
dc.subject.deweyTecnologíaes_ES
dc.subject.ods07 Affordable and clean energy
dc.subject.ods11 Sustainable cities and communities
dc.subject.ods12 Responsible consuption and production
dc.subject.odspa07 Energía asequible y no contaminante
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.subject.odspa12 Producción y consumo responsable
dc.titleA novel stomatal resistance equation for modeling heat and mass transfer of extensive vegetative roofs
dc.typeartículo
dc.volumen91
sipa.codpersvinculados1020220
sipa.codpersvinculados223145
sipa.codpersvinculados1659
sipa.trazabilidadWOS;2024-02-17
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