Počet záznamů: 1
Analysis of short-term rainfall time structure by concentration indexes
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SYSNO ASEP 0479105 Druh ASEP A - Abstrakt Zařazení RIV Záznam nebyl označen do RIV Zařazení RIV Není vybrán druh dokumentu Název Analysis of short-term rainfall time structure by concentration indexes Tvůrce(i) Müller, Miloslav (UFA-U) RID, ORCID
Bližňák, Vojtěch (UFA-U) RID, ORCID
Kašpar, Marek (UFA-U) RID, ORCIDCelkový počet autorů 3 Zdroj.dok. 9th European Conference on Severe Storms (ECSS 2017). - Amtsgericht München : European Severe Storms Laboratory e.V. (ESSL), 2017
ECSS2017-77Poč.str. 1 s. Forma vydání Online - E Akce European Conference on Severe Storms (ECSS) /9./ Datum konání 18.09.2017 - 22.09.2017 Země HR - Chorvatsko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova storm hyetographs ; radar-derived precipitation ; cluster analysis Vědní obor RIV DG - Vědy o atmosféře, meteorologie Institucionální podpora UFA-U - RVO:68378289 Anotace We suggest a methodology which enables to design storm hyetographs in several variants with respect to the time structure of rainfall episodes. Reference episodes are extracted from radar-derived precipitation time series with time resolution of 10 minutes, adjusted by daily data from rain gauges. Six clusters are distinguished by means of three indexes which quantify precipitation concentration within time steps from six to one hour. For individual clusters, the average course of precipitation intensity is expressed with synthetic hyetographs called camel hyetographs because of their typical shapes. One determined cluster represents steady precipitation intensity during the whole episode, three others distinguish variants of more concentrated episodes; two remaining clusters collect altogether 20 % of episodes which are characterized by a substantial temporary decrease of precipitation intensity or even its interruption during the episode. Next, the episodes are disaggregated with respect to the precipitation intensity into main 30-minute sections and adjacent side sections. Averaging of characteristics of the sections provides the means for designing a storm hyetograph for each of the clusters separately. Future research on frequencies of the clusters among maximum precipitation totals in various regions will enable to improve design hydrographs of small streams where runoff is basically influenced by the rainfall time structure. 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 2018
Počet záznamů: 1