Exploring the meteorological impacts of surface and rooftop heat mitigation strategies over a tropical city

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dc.contributor.authorKhan, Ansar
dc.contributor.authorKhorat, Samiran
dc.contributor.authorDoan, Quang-Van
dc.contributor.authorKhatun, Rupali
dc.contributor.authorDas, Debashish
dc.contributor.authorHamdi, Rafiq
dc.contributor.authorCarlosena Remírez, Laura
dc.contributor.authorSantamouris, Mattheos
dc.contributor.authorGeorgescu, Matei
dc.contributor.authorNiyogi, Dev
dc.contributor.departmentIngenieríaes_ES
dc.contributor.departmentIngeniaritzaeu
dc.date.accessioned2023-07-04T08:03:39Z
dc.date.available2023-07-04T08:03:39Z
dc.date.issued2023
dc.date.updated2023-07-04T07:56:08Z
dc.description.abstractDifferent heat mitigation technologies have been developed to improve the thermal environment in cities. However, the regional impacts of such technologies, especially in the context of a tropical city, remain unclear. The deployment of heat mitigation technologies at city-scale can change the radiation balance, advective flow, and energy balance between urban areas and the overlying atmosphere. We used the mesoscale Weather Research and Forecasting model coupled with a physically based single-layer urban canopy model to assess the impacts of five different heat mitigation technologies on surface energy balance, standard surface meteorological fields, and planetary boundary layer (PBL) dynamics for premonsoon typical hot summer days over a tropical coastal city in the month of April in 2018, 2019, and 2020. Results indicate that the regional impacts of cool materials (CMs), super-cool broadband radiative coolers, green roofs (GRs), vegetation fraction change, and a combination of CMs and GRs (i.e., “Cool city (CC)”) on the lower atmosphere are different at diurnal scale. Results showed that super-cool materials have the maximum potential of ambient temperature reduction of 1.6°C during peak hour (14:00 LT) compared to other technologies in the study. During the daytime hours, the PBL height was considerably lower than the reference scenario with no implementation of strategies by 700 m for super-cool materials and 500 m for both CMs and CC cases; however, the green roofing system underwent nominal changes over the urban area. During the nighttime hours, the PBL height increased by CMs and the CC strategies compared to the reference scenario, but minimal changes were evident for super-cool materials. The changes of temperature on the vertical profile of the heat mitigation implemented city reveal a stable PBL over the urban domain and a reduction of the vertical mixing associated with a pollution dome. This would lead to crossover phenomena above the PBL due to the decrease in vertical wind speed. Therefore, assessing the coupled regional impact of urban heat mitigation over the lower atmosphere at city-scale is urgent for sustainable urban planning.en
dc.description.sponsorshipDN acknowledges the William Stamps Farish Chair through the Jackson School of Geosciences at University of Texas; and funding from NOAA NIHHIS NA21OAR4310146, NASA Interdisciplinary Sciences (IDS) Program (NNH19ZDA001N-IDS and 80NSSC20K1268), and DOE Urban Integrated Field Labs (IFL).en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationKhan, A., Khorat, S., Doan, Q., Khatun, R., Das, D., Hamdi, R., Carlosena, L., Santamouris, M., Georgescu, M., & Niyogi, D. (2023). Exploring the meteorological impacts of surface and rooftop heat mitigation strategies over a tropical city. Journal of Geophysical Research: Atmospheres, 128(8), e2022JD038099. https://doi.org/10.1029/2022JD038099en
dc.identifier.doi10.1029/2022JD038099
dc.identifier.issn2169-897X
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/45728
dc.language.isoengen
dc.publisherAmerican Geophysical Unionen
dc.relation.ispartofJournal of Geophysical Research: Atmosphere, 128(8), 1-26en
dc.relation.publisherversionhttps://doi.org/10.1029/2022JD038099
dc.rights© 2023. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectCool cityen
dc.subjectCool roofsen
dc.subjectGreen roofen
dc.subjectHeat mitigationen
dc.subjectPlanetary boundary layeren
dc.subjectSuper-cool roofsen
dc.subjectWRF-SLUCMen
dc.titleExploring the meteorological impacts of surface and rooftop heat mitigation strategies over a tropical cityen
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
relation.isAuthorOfPublication687a0a58-08fb-4317-b3df-a35394add526
relation.isAuthorOfPublication.latestForDiscovery687a0a58-08fb-4317-b3df-a35394add526

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