Novel indices for the comparison of precipitation extremes and floods: an example from the Czech territory
This paper presents three indices for evaluation of hydrometeorological extremes, considering them as areal precipitation events and trans-basin floods. In contrast to common precipitation indices, the weather extremity index (WEI) reflects not only the highest precipitation amounts at individual ga...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2015-11-01
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| Series: | Hydrology and Earth System Sciences |
| Online Access: | http://www.hydrol-earth-syst-sci.net/19/4641/2015/hess-19-4641-2015.pdf |
| _version_ | 1811298149378031616 |
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| author | M. Müller M. Kašpar A. Valeriánová L. Crhová E. Holtanová B. Gvoždíková |
| author_facet | M. Müller M. Kašpar A. Valeriánová L. Crhová E. Holtanová B. Gvoždíková |
| author_sort | M. Müller |
| collection | DOAJ |
| description | This paper presents three indices for evaluation of hydrometeorological
extremes, considering them as areal precipitation events and trans-basin
floods. In contrast to common precipitation indices, the weather extremity
index (WEI) reflects not only the highest precipitation amounts at individual
gauges but also the rarity of the amounts, the size of the affected area, and
the duration of the event. Furthermore, the aspect of precipitation
seasonality was considered when defining the weather abnormality index (WAI),
which enables the detection of precipitation extremes throughout the year.
The precipitation indices are complemented with the flood extremity index
(FEI) employing peak discharge data. A unified design of the three indices,
based on return periods of station data, enables one to compare easily
inter-annual and seasonal distributions of precipitation extremes and large
floods.
<br><br>
The indices were employed in evaluation of 50 hydrometeorological extremes of
each type (extreme precipitation events, seasonally abnormal precipitation
events, and large floods) during the period 1961–2010 in the Czech Republic.
A preliminary study of discrepancies among historic values of the indices
indicated that variations in the frequency and/or magnitude of floods can
generally be due not only to variations in the magnitude of precipitation
events but also to variations in their seasonal distribution and other
factors, primarily the antecedent saturation. |
| first_indexed | 2024-04-13T06:15:25Z |
| format | Article |
| id | doaj.art-74c33473a44e438e848fbc4c6a878a7e |
| institution | Directory Open Access Journal |
| issn | 1027-5606 1607-7938 |
| language | English |
| last_indexed | 2024-04-13T06:15:25Z |
| publishDate | 2015-11-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Hydrology and Earth System Sciences |
| spelling | doaj.art-74c33473a44e438e848fbc4c6a878a7e2022-12-22T02:58:50ZengCopernicus PublicationsHydrology and Earth System Sciences1027-56061607-79382015-11-0119114641465210.5194/hess-19-4641-2015Novel indices for the comparison of precipitation extremes and floods: an example from the Czech territoryM. Müller0M. Kašpar1A. Valeriánová2L. Crhová3E. Holtanová4B. Gvoždíková5Institute of Atmospheric Physics AS CR, Prague, Czech RepublicInstitute of Atmospheric Physics AS CR, Prague, Czech RepublicCzech Hydrometeorological Institute, Prague, Czech RepublicCzech Hydrometeorological Institute, Prague, Czech RepublicCzech Hydrometeorological Institute, Prague, Czech RepublicFaculty of Science, Charles University, Prague, Czech RepublicThis paper presents three indices for evaluation of hydrometeorological extremes, considering them as areal precipitation events and trans-basin floods. In contrast to common precipitation indices, the weather extremity index (WEI) reflects not only the highest precipitation amounts at individual gauges but also the rarity of the amounts, the size of the affected area, and the duration of the event. Furthermore, the aspect of precipitation seasonality was considered when defining the weather abnormality index (WAI), which enables the detection of precipitation extremes throughout the year. The precipitation indices are complemented with the flood extremity index (FEI) employing peak discharge data. A unified design of the three indices, based on return periods of station data, enables one to compare easily inter-annual and seasonal distributions of precipitation extremes and large floods. <br><br> The indices were employed in evaluation of 50 hydrometeorological extremes of each type (extreme precipitation events, seasonally abnormal precipitation events, and large floods) during the period 1961–2010 in the Czech Republic. A preliminary study of discrepancies among historic values of the indices indicated that variations in the frequency and/or magnitude of floods can generally be due not only to variations in the magnitude of precipitation events but also to variations in their seasonal distribution and other factors, primarily the antecedent saturation.http://www.hydrol-earth-syst-sci.net/19/4641/2015/hess-19-4641-2015.pdf |
| spellingShingle | M. Müller M. Kašpar A. Valeriánová L. Crhová E. Holtanová B. Gvoždíková Novel indices for the comparison of precipitation extremes and floods: an example from the Czech territory Hydrology and Earth System Sciences |
| title | Novel indices for the comparison of precipitation extremes and floods: an example from the Czech territory |
| title_full | Novel indices for the comparison of precipitation extremes and floods: an example from the Czech territory |
| title_fullStr | Novel indices for the comparison of precipitation extremes and floods: an example from the Czech territory |
| title_full_unstemmed | Novel indices for the comparison of precipitation extremes and floods: an example from the Czech territory |
| title_short | Novel indices for the comparison of precipitation extremes and floods: an example from the Czech territory |
| title_sort | novel indices for the comparison of precipitation extremes and floods an example from the czech territory |
| url | http://www.hydrol-earth-syst-sci.net/19/4641/2015/hess-19-4641-2015.pdf |
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