Bias-corrected CHIRP [Climate Hazards Group InfraRed Precipitation] satellite rainfall for water level simulation, Lake Ziway, Ethiopia

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cg.contributor.affiliationInternational Water Management Instituteen
cg.coverage.countryEthiopia
cg.coverage.iso3166-alpha2ET
cg.coverage.regionAfrica
cg.coverage.regionEastern Africa
cg.creator.identifierAlemseged Tamiru Haile: 0000-0001-8647-2188
cg.identifier.doihttps://doi.org/10.1061/(asce)he.1943-5584.0001965en
cg.identifier.iwmilibraryH049933
cg.isijournalISI Journalen
cg.issn1084-0699en
cg.issue9en
cg.journalJournal of Hydrologic Engineeringen
cg.reviewStatusPeer Reviewen
cg.volume25en
dc.contributor.authorGoshime, D. W.en
dc.contributor.authorAbsi, R.en
dc.contributor.authorHaile, Alemseged Tamiruen
dc.contributor.authorLedesert, B.en
dc.contributor.authorRientjes, T.en
dc.date.accessioned2020-09-03T03:14:28Zen
dc.date.available2020-09-03T03:14:28Zen
dc.identifier.urihttps://hdl.handle.net/10568/109185
dc.titleBias-corrected CHIRP [Climate Hazards Group InfraRed Precipitation] satellite rainfall for water level simulation, Lake Ziway, Ethiopiaen
dcterms.abstractApplicability of satellite rainfall products must be explored since rain gauge networks have limitations to provide adequate spatial coverage. In this study, Climate Hazards InfraRed Precipitation (CHIRP) satellite-only product was evaluated for rainfall-runoff modeling whereas the simulated runoff served as input to simulate the water levels of Lake Ziway from 1986 to 2014. CHIRP dataset was bias-corrected using power transformation and used as input to Hydrologiska Byråns Vattenbalansavdelning (HBV) model to simulate streamflow of Meki and Katar catchments. Results showed that gauged catchments of Meki and Katar contributed 524 and 855 mm to the annual lake inflow, respectively. The estimated runoff from ungauged catchments is 182 mm that amounts to approximately 8.5% of the total lake inflow over the period 1986–2000. The results of lake level simulation show good agreement from 1986 to 2000, but deteriorating agreement after 2000, which is mainly attributed to errors in water balance terms and human-induced impacts. For the period 1986–2000, the water balance closure error for the lake was 67.5 mm per year, which accounts for 2.9% of the total lake inflow from rainfall and river inflow. This study shows bias correction increases the applicability of CHIRP satellite product for lake water balance studies.en
dcterms.accessRightsLimited Access
dcterms.bibliographicCitationGoshime, D. W.; Absi, R.; Haile, Alemseged Tamiru; Ledesert, B.; Rientjes, T. 2020. Bias-corrected CHIRP [Climate Hazards Group InfraRed Precipitation] satellite rainfall for water level simulation, Lake Ziway, Ethiopia. Journal of Hydrologic Engineering, 25(9):05020024. [doi: 10.1061/(ASCE)HE.1943-5584.0001965]en
dcterms.extent05020024en
dcterms.issued2020-09
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherAmerican Society of Civil Engineersen
dcterms.subjectevapotranspirationen
dcterms.subjectcatchment areasen
dcterms.subjectprecipitationen
dcterms.subjectrain gaugesen
dcterms.subjectmodelsen
dcterms.subjectflow dischargeen
dcterms.subjectriversen
dcterms.subjectrainfall-runoff relationshipsen
dcterms.subjectestimationen
dcterms.subjectwater balanceen
dcterms.subjectsimulationen
dcterms.subjectwater levelsen
dcterms.subjectlakesen
dcterms.typeJournal Article

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