High-resolution spatial analysis of the variability in the subdaily rainfall time structure

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F21%3A00533221" target="_blank" >RIV/68378289:_____/21:00533221 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/21:10420961

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0169809520311388" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0169809520311388</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.atmosres.2020.105202" target="_blank" >10.1016/j.atmosres.2020.105202</a>

Result language

angličtina

Original language name

High-resolution spatial analysis of the variability in the subdaily rainfall time structure

Original language description

The paper is motivated by the generally large variability in the rainfall time structure during the events with high subdaily precipitation totals in Czechia, which should be taken into account when designing water management systems to handle precipitation. The presented spatial analysis of the variability in the rainfall time structure is based on the regional frequency analysis of the 6-h totals with a spatial resolution of 1 km. The totals are quantified with the synergy method using the weather-radar-derived precipitation intensities and the totals measured by rain gauges. The frequency analysis employs the progressive and robust region-of-influence method. Instead of only one design storm hyetograph, each site is characterized by the possible occurrence of six hyetographs that are synthetized from the heavy rainfalls in Czechia. The percentage of individual hyetographs for a given design precipitation depth is assessed through the combination of the frequency analyses of the totals with respect to and regardless of the course of precipitation. The spatial heterogeneity in the percentages is significantly affected by the topography and amplifies with the increasing return period of the totals. The six synthetic hyetographs are represented relatively evenly in the lowlands. In contrast, the mountainous areas are characterized by a notable increase in the percentages of events of long-lasting steady rain, which are triggered by their circulation causes together with the significant role of the orographic precipitation enhancements, particularly through the windward orographic lifting, which is mainly on the northern and eastern slopes of the mountains. Future research on the dependence between the return period of the events of a specific precipitation course and the magnitude of the antecedent totals might be even more applicable to hydrological modeling in small catchments.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10509 - Meteorology and atmospheric sciences

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Atmospheric Research

ISSN

0169-8095

e-ISSN

1873-2895

Volume of the periodical

248

Issue of the periodical within the volume

15 Jan

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

13

Pages from-to

105202

UT code for WoS article

000594100800002

EID of the result in the Scopus database

2-s2.0-85089584987