Missing data analysis and homogeneity test for Turkish precipitation series

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dc.authoridFIRAT, MAHMUT/0000-0002-8010-9289
dc.authoridGÜNGÖR, Mahmud/0000-0001-8019-1430
dc.authoridDIKBAS, Fatih/0000-0001-5779-2801
dc.authoridKoc, Abdullah Cem/0000-0001-7553-1373
dc.authorwosidFIRAT, MAHMUT/ABG-7962-2020
dc.authorwosidKoç, Abdullah Cem/D-1451-2016
dc.authorwosidGÜNGÖR, Mahmud/AAB-3534-2020
dc.authorwosidDİKBAŞ, Fatih/HJP-4307-2023
dc.authorwosidGüngör, Mahmud/AAA-8524-2021
dc.contributor.authorFirat, Mahmut
dc.contributor.authorDikbas, Fatih
dc.contributor.authorKoc, A. Cem
dc.contributor.authorGungor, Mahmud
dc.date.accessioned2024-08-04T20:35:32Z
dc.date.available2024-08-04T20:35:32Z
dc.date.issued2010
dc.departmentİnönü Üniversitesien_US
dc.description.abstractIn this study, missing value analysis and homogeneity tests were conducted for 267 precipitation stations throughout Turkey. For this purpose, the monthly and annual total precipitation records at stations operated by Turkish State Meteorological Service (DMI) from 1968 to 1998 were considered. In these stations, precipitation records for each month was investigated separately and the stations with missing values for too many years were eliminated. The missing values of the stations were completed by Expectation Maximization (EM) method by using the precipitation records of the nearest gauging station. In this analysis, 38 stations were eliminated because they had missing values for more than 5 years, 161 stations had no missing values and missing precipitation values were completed in the remaining 68 stations. By this analysis, annual total precipitation data were obtained by using the monthly values. These data should be hydrologically and statistically reliable for later hydrological, meteorological, climate change modelling and forecasting studies. For this reason, Standard Normal Homogeneity Test (SNHT), (Swed Eisenhart) Runs Test and Pettitt homogeneity tests were applied for the annual total precipitation data at 229 gauging stations from 1968 to 1998. The results of each of the testing methods were evaluated separately at a significance level of 95% and the inhomogeneous years were determined. With the application of the aforementioned methods, inhomogeneity was detected at 50 stations of which the natural structure was deteriorated and 179 stations were found to be homogeneous.en_US
dc.description.sponsorshipTUBITAK (Turkish National Science Foundation) [107Y318]en_US
dc.description.sponsorshipThis research was supported by TUBITAK (Turkish National Science Foundation) under the project number of 107Y318. The authors acknowledge the cooperation of DMI (Turkish State Meteorological Service) authorities for providing data and information. The authors are grateful to anonymous reviewers for their helpful and constructive comments on an earlier draft of this paper.en_US
dc.identifier.doi10.1007/s12046-010-0051-8
dc.identifier.endpage720en_US
dc.identifier.issn0256-2499
dc.identifier.issue6en_US
dc.identifier.scopus2-s2.0-80051722023en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage707en_US
dc.identifier.urihttps://doi.org/10.1007/s12046-010-0051-8
dc.identifier.urihttps://hdl.handle.net/11616/95409
dc.identifier.volume35en_US
dc.identifier.wosWOS:000286496900005en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherIndian Acad Sciencesen_US
dc.relation.ispartofSadhana-Academy Proceedings in Engineering Sciencesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectPrecipitationen_US
dc.subjectmissing values completionen_US
dc.subjectEM methoden_US
dc.subjecthomogeneity testsen_US
dc.titleMissing data analysis and homogeneity test for Turkish precipitation seriesen_US
dc.typeArticleen_US

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