Počet záznamů: 1

Is daily precipitation Gamma-distributed? Adverse effects of an incorrect use of the Kolmogorov-Smirnov test

  1. 1.
    0328587 - UFA-U 2010 RIV NL eng J - Článek v odborném periodiku
    Vlček, Ondřej - Huth, Radan
    Is daily precipitation Gamma-distributed? Adverse effects of an incorrect use of the Kolmogorov-Smirnov test.
    Atmospheric Research. Roč. 93, č. 4 (2009), s. 759-766 ISSN 0169-8095
    Grant CEP: GA AV ČR IAA300420806
    Výzkumný záměr: CEZ:AV0Z30420517
    Klíčová slova: Daily precipitation * Gamma distribution * Kolmogorov–Smirnov test * Lilliefors test
    Kód oboru RIV: DG - Vědy o atmosféře, meteorologie
    Impakt faktor: 1.811, rok: 2009
    http://www.sciencedirect.com/science/journal/01698095

    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.
    Trvalý link: http://hdl.handle.net/11104/0174876