DOI: 10.1016/j.atmosres.2018.04.015
Scopus记录号: 2-s2.0-85047299258
论文题名: Analysis of rainfall time structures on a scale of hours
作者: Müller M. ; Bližňák V. ; Kašpar M.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 211 起始页码: 38
结束页码: 51
语种: 英语
英文关键词: Half-time concentration index
; Rainfall intensity
; Rainfall time structure
; Synthetic storm hyetograph
; Weather radar
Scopus关键词: Meteorological radar
; Rain gages
; Circulation patterns
; Concentration indices
; Precipitation episodes
; Precipitation intensity
; Precipitation time series
; Rainfall intensity
; Synthetic hyetographs
; Synthetic storm hyetograph
; Rain
; hydrograph
; precipitation intensity
; radar
; rainfall
; raingauge
; time series analysis
; Czech Republic
英文摘要: The paper is motivated by the enormous variability of short-term rainfall time structures which need to be discretized into several typical variants and explained from the viewpoint of rainfall types producing them. We present six variants of the time structure of 6-h rainfalls in Czechia, distinguished by a novel methodology for designing synthetic hyetographs. Reference 6-h rainfall episodes were extracted from radar-derived precipitation time series with a time resolution of 10 min, adjusted by daily data from rain gauges. The variants were distinguished by three indexes that quantify the precipitation concentration within time steps from one to six hours. The episodes with steady precipitation intensity during the entire episode are mainly stratiform or possibly mixed and frequently take much longer than six hours because of circulation patterns producing them; central and northeastern cyclonic types are most represented. All other variants of episodes frequently occur when a trough is situated above Central Europe. Episodes with steady intensity lasting about three hours are still mainly stratiform or mixed while two variants represented by “two-humped” hyetographs are usually mixed or convective. Two variants of most concentrated episodes are mainly convective or possibly mixed; they are characterized by enhanced frequency of southwestern and eastern cyclonic types. Future research on cluster frequencies among maximum precipitation episodes in various regions will enable the improvement of design hydrographs of small streams where runoff is basically influenced by the rainfall time structure. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108837
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Institute of Atmospheric Physics CAS, Department of Meteorology, Bočni II 1401, Prague 4, 141 31, Czech Republic; Charles University, Faculty of Science, Department of Physical Geography and Geoecology, Albertov 6, Prague 2, 128 43, Czech Republic
Recommended Citation:
Müller M.,Bližňák V.,Kašpar M.. Analysis of rainfall time structures on a scale of hours[J]. Atmospheric Research,2018-01-01,211