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dc.contributor.authorDanandeh Mehr, Ali
dc.contributor.authorLee, Sanghyun
dc.contributor.authorMoriasi, Daniel N.
dc.contributor.authorMirchi, Ali
dc.date.accessioned2024-11-06T12:33:21Z
dc.date.available2024-11-06T12:33:21Z
dc.date.issued2024
dc.identifier.citationLee, S., Moriasi, D. N., Mehr, A. D., & Mirchi, A. (2024). Sensitivity of Standardized Precipitation and Evapotranspiration Index (SPEI) to the choice of SPEI probability distribution and evapotranspiration method. Journal of Hydrology: Regional Studies, 53.en_US
dc.identifier.issn2214-5818
dc.identifier.urihttp://hdl.handle.net/20.500.12566/2139
dc.description.abstractThe standardized precipitation evapotranspiration index (SPEI) is a widely used meteorological drought index that incorporates potential evapotranspiration (PET) into a precipitation-based index. However, the understanding of the appropriate PET method for SPEI across different temporal scales in non-arid climate conditions remains limited. We compared Thornthwaite (TW), Hargreaves (HG), and Penman-Monteith (PM) equations for SPEI at various accumulations, considering three temporal scales: 1) long-term (25 years), 2) event-based, and 3) monthly. Also, we examined the log-logistic and generalized extreme value distributions to test the normality of SPEI computed from the three PET methods. To do this, we utilized high-quality climate datasets measured at 107 stations across the state of Oklahoma, United States, which has a diverse climate ranging from semi-arid to humid subtropical.en_US
dc.description.sponsorshipNo sponsoren_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectSPEI Evapotranspirationen_US
dc.subjectEvapotranspirasyontr_TR
dc.subjectProbability distributionen_US
dc.subjectİhtimal dağılımıtr_TR
dc.subjectThornthwaiteen_US
dc.subjectHargreavesen_US
dc.subjectPenman-Monteithen_US
dc.subjectOklahomaen_US
dc.titleSensitivity of Standardized Precipitation and Evapotranspiration Index (SPEI) to the choice of SPEI probability distribution and evapotranspiration methoden_US
dc.typeinfo:eu-repo/semantics/articleen_US
dc.relation.publicationcategoryİnternational publicationen_US
dc.identifier.wosWOS:001217591000001
dc.identifier.scopus2-s2.0-85189081747
dc.identifier.volume53
dc.contributor.orcid0000-0003-2769-106X [Danandeh Mehr, Ali]
dc.contributor.abuauthorDanandeh Mehr, Ali
dc.contributor.yokid275430 [Danandeh Mehr, Ali]
dc.relation.journalJournal of Hydrology: Regional Studiesen_US
dc.contributor.ScopusAuthorID58150194100 [Danandeh Mehr, Ali]
dc.identifier.doi10.1016/j.ejrh.2024.101761


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