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Is daily precipitation Gamma-distributed? Adverse effects of an incorrect use of the Kolmogorov-Smirnov test
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SYSNO ASEP 0328587 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Is daily precipitation Gamma-distributed? Adverse effects of an incorrect use of the Kolmogorov-Smirnov test Tvůrce(i) Vlček, Ondřej (UFA-U)
Huth, Radan (UFA-U) RID, ORCIDZdroj.dok. Atmospheric Research. - : Elsevier - ISSN 0169-8095
Roč. 93, č. 4 (2009), s. 759-766Poč.str. 8 s. Forma vydání web - web Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Daily precipitation ; Gamma distribution ; Kolmogorov–Smirnov test ; Lilliefors test Vědní obor RIV DG - Vědy o atmosféře, meteorologie CEP IAA300420806 GA AV ČR - Akademie věd CEZ AV0Z30420517 - UFA-U, BC-A (2005-2011) UT WOS 000268352000009 DOI 10.1016/j.atmosres.2009.03.005 Anotace The applicability of the Gamma distribution for the description of daily precipitation amounts within a single winter, spring, summer, and autumn season is tested on 90 European stations. The Lilliefors modification of the Kolmogorov–Smirnov (KS) test is used to assess the goodness-of-fit of the Gamma distribution to daily precipitation in every year and season of the reference period. The possible rejection of the Gamma distribution for a particular station and season is based on the number of years in which the distribution is rejected. The results are compared with those obtained from the non-modified KS test, whose application is incorrect when the fit to the theoretical distribution is tested on the same data from which its parameters were estimated. We confirm that the two tests yield considerably different results. The validity of the Gamma dist. is not as wide as it is commonly believed: in winter, precipitation at more than 40% of the examined stations is not Gamma-distributed. Pracoviště Ústav fyziky atmosféry Kontakt Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Rok sběru 2010
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