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

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cg.authorship.typesCGIAR single centreen
cg.authorship.typesNot CGIAR developing country instituteen
cg.authorship.typesNot CGIAR international instituteen
cg.contributor.affiliationAddis Ababa Universityen
cg.contributor.affiliationThe Abdus Salam International Centre for Theoretical Physicsen
cg.contributor.affiliationJohns Hopkins Universityen
cg.contributor.affiliationEnvironment and Climate Change, Canadaen
cg.contributor.affiliationInternational Livestock Research Instituteen
cg.contributor.donorWorld Banken
cg.coverage.regionAfrica
cg.coverage.regionEastern Africa
cg.creator.identifierTadesse Terefe Zeleke: 0000-0002-1111-6354en
cg.creator.identifierFilippo Giorgi: 0000-0003-2895-5274en
cg.creator.identifierGulilat T. Diro: 0000-0001-7037-0806en
cg.creator.identifierBenjamin Zaitchik: 0000-0002-0698-0658en
cg.creator.identifierGraziano Giuliani: 0000-0003-3276-3072en
cg.creator.identifierDesalegn Ayal: 0000-0001-8131-7103en
cg.creator.identifierTeferi Demissie: 0000-0002-0228-1972en
cg.edition100398en
cg.identifier.doihttps://doi.org/10.1016/j.cliser.2023.100398en
cg.isijournalISI Journalen
cg.issn2405-8807en
cg.journalClimate Servicesen
cg.reviewStatusPeer Reviewen
cg.volume31en
dc.contributor.authorZeleke, Tadesse Ten
dc.contributor.authorGiorgi, Flippoen
dc.contributor.authorDiro, Gulilat Ten
dc.contributor.authorZaitchik, Benjaminen
dc.contributor.authorGiuliani, Grazianoen
dc.contributor.authorAyal, Desalegnen
dc.contributor.authorTure, Kassahunen
dc.contributor.authorWorkneh, Sintayehuen
dc.contributor.authorDemissie, Teferi Dejeneen
dc.date.accessioned2024-01-10T16:55:16Zen
dc.date.available2024-01-10T16:55:16Zen
dc.identifier.urihttps://hdl.handle.net/10568/137515
dc.titleEffect of urbanization on East African climate as simulated by coupled urban-climate modelen
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
dcterms.accessRightsOpen Access
dcterms.available2023-06-22en
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
dcterms.extent1-12en
dcterms.issued2023-06-15en
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherElsevieren
dcterms.subjecturbanizationen
dcterms.subjectland coveren
dcterms.subjecttemperatureen
dcterms.subjectprecipitationen
dcterms.typeJournal Article

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