Effect of urbanization on East African climate as simulated by coupled urban-climate model

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cg.authorship.typesCGIAR single centreen_US
cg.authorship.typesNot CGIAR developing country instituteen_US
cg.authorship.typesNot CGIAR international instituteen_US
cg.contributor.affiliationAddis Ababa Universityen_US
cg.contributor.affiliationThe Abdus Salam International Centre for Theoretical Physicsen_US
cg.contributor.affiliationJohns Hopkins Universityen_US
cg.contributor.affiliationEnvironment and Climate Change, Canadaen_US
cg.contributor.affiliationInternational Livestock Research Instituteen_US
cg.contributor.donorWorld Banken_US
cg.coverage.regionAfricaen_US
cg.coverage.regionEastern Africaen_US
cg.creator.identifierTadesse Terefe Zeleke: 0000-0002-1111-6354en_US
cg.creator.identifierFilippo Giorgi: 0000-0003-2895-5274en_US
cg.creator.identifierGulilat T. Diro: 0000-0001-7037-0806en_US
cg.creator.identifierBenjamin Zaitchik: 0000-0002-0698-0658en_US
cg.creator.identifierGraziano Giuliani: 0000-0003-3276-3072en_US
cg.creator.identifierDesalegn Ayal: 0000-0001-8131-7103en_US
cg.creator.identifierTeferi Demissie: 0000-0002-0228-1972en_US
cg.edition100398en_US
cg.identifier.doihttps://doi.org/10.1016/j.cliser.2023.100398en_US
cg.isijournalISI Journalen_US
cg.issn2405-8807en_US
cg.journalClimate Servicesen_US
cg.reviewStatusPeer Reviewen_US
cg.volume31en_US
dc.contributor.authorZeleke, Tadesse Ten_US
dc.contributor.authorGiorgi, Flippoen_US
dc.contributor.authorDiro, Gulilat Ten_US
dc.contributor.authorZaitchik, Benjaminen_US
dc.contributor.authorGiuliani, Grazianoen_US
dc.contributor.authorAyal, Desalegnen_US
dc.contributor.authorTure, Kassahunen_US
dc.contributor.authorWorkneh, Sintayehuen_US
dc.contributor.authorDemissie, Teferi Dejeneen_US
dc.date.accessioned2024-01-10T16:55:16Zen_US
dc.date.available2024-01-10T16:55:16Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/137515en_US
dc.titleEffect of urbanization on East African climate as simulated by coupled urban-climate modelen_US
dcterms.abstractThis study examines the effect of urbanization on climate variability over East Africa. Seasonal trend of rainfall and temperature was analyzed using Mann-Kendall trend test and statistically significant rainfall trend is observed during spring (February-May) and summer (June-September) over northeast and spring/“bega”(October-January) seasons in southeastern regions of Ethiopia, thereby suggesting a seasonal shift of rainfall distribution. The temperature trend showed significant warming in the simulated field, except in central East Sudan, where there has been a significant decline. A numbers of idealized sensitivity experiments have been conducted with the Regional Climate Model (RegCM4.6) to investigate the contribution of urbanization to the East African region climate variability and trend. Model assessment against observed climate variables showed good performance in the simulation of spatial and temporal variability of regional climate variables. The results of the sensitivity experiment by prescribing different urban environments (tall building district (TBD), high density (HD), medium density (MD) and original land use) for the surface scheme (CLM4.5) reveal statistically significant impacts of urbanized surfaces on surface temperatures and precipitation due to variations in energy budget, local circulation and disturbance of hydro meteorological variables. It is noted that TBD urban environment has a higher impact on the local climate than other urban environments. Patterns of seasonal rainfall variability simulated using artificially urbanized land cover suggests involvement of complex interactions and is less similar to the observed rainfall trend, while surface temperature variability is significantly affected by local land-cover change and is very similar to the observed surface temperature trend.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.available2023-06-22en_US
dcterms.bibliographicCitationZeleke TT, Giorgi F, Diro GT, Zaitchik BF, Giuliani G, Ayal, D., Kassahun T, Sintayehu WD, Demissie T. 2023. Effect of urbanization on East African climate as simulated by coupled urban-climate model. Climate Services:31-100398.en_US
dcterms.extent1-12en_US
dcterms.issued2023-06-15en_US
dcterms.languageenen_US
dcterms.licenseCC-BY-4.0en_US
dcterms.publisherElsevieren_US
dcterms.subjecturbanizationen_US
dcterms.subjectland coveren_US
dcterms.subjecttemperatureen_US
dcterms.subjectprecipitationen_US
dcterms.typeJournal Articleen_US

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