Investigating the changes in extreme rainfall series recorded in an urbanised area

Leonardo Noto, Marcella Cannarozzo, Noto, Aronica, Cannarozzo

Risultato della ricerca: Article

22 Citazioni (Scopus)

Abstract

The aim of this study is to investigate and quantify changes in the rainfall regime of the metropolitan area of Palermo characterised by increasingly strong urbanisation. The rainfall data, considered in this study, were collected on a yearly basis from eight rain gauges within and outside the metropolitan area of Palermo, Sicily, Italy. A preliminary analysis made on the annual total rainfall depths showed a global reduction of total annual rainfall, with two different trends: more regular for the series observed in the rain gauges within the urbanised area and more variable for the series observed in the rain gauges outside the area. A further analysis has been performed using the series of maximum intensity for fixed duration (1, 3, 6, 12, 24 hrs) and annual daily maxima. The analysis of the trend in the extreme rainfall series has been performed by estimating the maximum rainfall depth corresponding to a fixed return period using the EV1 distribution with parameters estimated using L-moments. The analysis of all series indicates a global reduction of rainfall intensities, both for internal and external series, in disagreement with the results obtained by other authors.
Lingua originaleEnglish
pagine (da-a)49-54
Numero di pagine6
RivistaWater Science and Technology
Volume45
Stato di pubblicazionePublished - 2002

Fingerprint

Rain
rainfall
Rain gages
gauge
metropolitan area
return period
precipitation intensity
urbanization
analysis
rain
trend

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Water Science and Technology

Cita questo

@article{c15eaa7bc83e4957af6763e8394a937f,
title = "Investigating the changes in extreme rainfall series recorded in an urbanised area",
abstract = "The aim of this study is to investigate and quantify changes in the rainfall regime of the metropolitan area of Palermo characterised by increasingly strong urbanisation. The rainfall data, considered in this study, were collected on a yearly basis from eight rain gauges within and outside the metropolitan area of Palermo, Sicily, Italy. A preliminary analysis made on the annual total rainfall depths showed a global reduction of total annual rainfall, with two different trends: more regular for the series observed in the rain gauges within the urbanised area and more variable for the series observed in the rain gauges outside the area. A further analysis has been performed using the series of maximum intensity for fixed duration (1, 3, 6, 12, 24 hrs) and annual daily maxima. The analysis of the trend in the extreme rainfall series has been performed by estimating the maximum rainfall depth corresponding to a fixed return period using the EV1 distribution with parameters estimated using L-moments. The analysis of all series indicates a global reduction of rainfall intensities, both for internal and external series, in disagreement with the results obtained by other authors.",
keywords = "Extreme rainfall, Extreme value distribution, Time-series, Urban hydrology, Water Science and Technology",
author = "Leonardo Noto and Marcella Cannarozzo and Noto and Aronica and Cannarozzo",
year = "2002",
language = "English",
volume = "45",
pages = "49--54",
journal = "Water Science and Technology",
issn = "0273-1223",
publisher = "IWA Publishing",

}

TY - JOUR

T1 - Investigating the changes in extreme rainfall series recorded in an urbanised area

AU - Noto, Leonardo

AU - Cannarozzo, Marcella

AU - Noto, null

AU - Aronica, null

AU - Cannarozzo, null

PY - 2002

Y1 - 2002

N2 - The aim of this study is to investigate and quantify changes in the rainfall regime of the metropolitan area of Palermo characterised by increasingly strong urbanisation. The rainfall data, considered in this study, were collected on a yearly basis from eight rain gauges within and outside the metropolitan area of Palermo, Sicily, Italy. A preliminary analysis made on the annual total rainfall depths showed a global reduction of total annual rainfall, with two different trends: more regular for the series observed in the rain gauges within the urbanised area and more variable for the series observed in the rain gauges outside the area. A further analysis has been performed using the series of maximum intensity for fixed duration (1, 3, 6, 12, 24 hrs) and annual daily maxima. The analysis of the trend in the extreme rainfall series has been performed by estimating the maximum rainfall depth corresponding to a fixed return period using the EV1 distribution with parameters estimated using L-moments. The analysis of all series indicates a global reduction of rainfall intensities, both for internal and external series, in disagreement with the results obtained by other authors.

AB - The aim of this study is to investigate and quantify changes in the rainfall regime of the metropolitan area of Palermo characterised by increasingly strong urbanisation. The rainfall data, considered in this study, were collected on a yearly basis from eight rain gauges within and outside the metropolitan area of Palermo, Sicily, Italy. A preliminary analysis made on the annual total rainfall depths showed a global reduction of total annual rainfall, with two different trends: more regular for the series observed in the rain gauges within the urbanised area and more variable for the series observed in the rain gauges outside the area. A further analysis has been performed using the series of maximum intensity for fixed duration (1, 3, 6, 12, 24 hrs) and annual daily maxima. The analysis of the trend in the extreme rainfall series has been performed by estimating the maximum rainfall depth corresponding to a fixed return period using the EV1 distribution with parameters estimated using L-moments. The analysis of all series indicates a global reduction of rainfall intensities, both for internal and external series, in disagreement with the results obtained by other authors.

KW - Extreme rainfall

KW - Extreme value distribution

KW - Time-series

KW - Urban hydrology

KW - Water Science and Technology

UR - http://hdl.handle.net/10447/207440

M3 - Article

VL - 45

SP - 49

EP - 54

JO - Water Science and Technology

JF - Water Science and Technology

SN - 0273-1223

ER -