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dc.contributor.authorŞen, Zekai
dc.contributor.authorAlmazroui, Mansour
dc.date.accessioned2021-10-07T09:17:53Z
dc.date.available2021-10-07T09:17:53Z
dc.date.issued2021en_US
dc.identifier.citationŞen, Z. ve Almazroui, M. (2021). Actual precipitation index (API) for drought classification. Earth Systems and Environment, 5(1), 59-70. https://dx.doi.org/10.1007/s41748-021-00201-0en_US
dc.identifier.issn2509-9426
dc.identifier.issn2509-9434
dc.identifier.urihttps://dx.doi.org/10.1007/s41748-021-00201-0
dc.identifier.urihttps://hdl.handle.net/20.500.12511/8384
dc.description.abstractThe Standard Precipitation Index (SPI) is a widely used statistical technique for the characterization of droughts. It is based on a probabilistic standardization procedure, which converts a Gamma-type probability distribution function (PDF) into a normal (Gaussian) standard series with zero mean and unit standard deviation. Drought classification based on SPI indicates dry and wet spell characteristics, provided that the hydro-meteorological records abide by normal (Gaussian) PDF only, otherwise the results will be biased. Therefore, in this paper, the actual precipitation index (API) method is presented, which provides drought classification and information regardless of the underlying PDFs. The main purpose of this paper is to explain the main differences between SPI and API and to prove that the use of API is the more reliable solution for classification of droughts into five categories described as "Normal dry", "Slightly dry", "Medium dry", "Very dry" and "Extremely dry". The application of the methodology is presented for two sets of precipitation data; one with exponential PDF monthly precipitation records from Istanbul City, Turkey and one for New Jersey, USA with almost normal (Gaussian) PDF based on annual precipitation records. The comparisons indicate that API is applicable regardless of the underlying PDF of the hydro-meteorology data. It produces real drought classification from the original data without recourse to standard normal PDF conversion.en_US
dc.language.isoengen_US
dc.publisherSpringer International Publishing AGen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectActualen_US
dc.subjectClassificationen_US
dc.subjectDrought Durationen_US
dc.subjectIndexen_US
dc.subjectPrecipitationen_US
dc.subjectProbabilityen_US
dc.subjectStandarden_US
dc.subjectStatisticsen_US
dc.titleActual precipitation index (API) for drought classificationen_US
dc.typearticleen_US
dc.relation.journalEarth Systems and Environmenten_US
dc.departmentİstanbul Medipol Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, İnşaat Mühendisliği Bölümüen_US
dc.authorid0000-0003-2754-5492en_US
dc.identifier.volume5en_US
dc.identifier.issue1en_US
dc.identifier.startpage59en_US
dc.identifier.endpage70en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1007/s41748-021-00201-0en_US


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