Summary
This paper examines the genesis, data, sampling and analyses procedures, and compares the values for one combination of duration and rare frequency of three major generalized rainfall frequency studies published over a period of 44 years. Even though there are considerable differences in the sampling periods, number of stations, and analyses procedures, the comparisons of 100-year 24-hour values at corresponding points on maps exhibit only about a 10-percent discrepancy. This is well within the range of error when expressing the data on a frequency basis. Tests with recent data strongly indicate that the frequency maps are, for all practical purposes, still applicable to today's extreme-value rainfall regime.
Zusammenfassung
Die Arbeit untersucht die Entstehung, Daten und Analyseverfahren und vergleicht die Werte von einer Kombination der Dauer und Häufigkeit in drei innerhalb eines Zeitabschnittes von 44 Jahren publizierten verallgemeinerten Studien der Niederschlagshäufigkeit. Selbst wenn beträchtliche Differenzen in den Beobachtungsperioden, in der Zahl der Stationen und in den Analyseverfahren bestanden, zeigten die Vergleiche von 100jährigen Tageswerten auf korrespondierenden Punkten in den Karten nur einen Unterschied von ungefähr 10%. Dies liegt im Fehlerbereich bei einer Darstellung der Daten auf einer Häufigkeitsbasis. Tests mit neueren Daten zeigen, daß die Häufigkeitskarten für alle praktischen Zwecke auch auf das heutige Regime extremer Niederschlagswerte noch anwendbar sind.
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Hershfreld, D.M. A comparison of three generalized extreme-value rainfall studies. Arch. Met. Geoph. Biocl., Ser. B 33, 251–260 (1983). https://doi.org/10.1007/BF02275099
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DOI: https://doi.org/10.1007/BF02275099