Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Distribution of extreme rainfall events over Ebro River basin
Year:2012
Research Areas
  • Mathematics,
  • Natural sciences and health sciences,
  • Earth sciences,
  • Soil science
Information
Abstract
The purpose of this work is to provide a description of the heavy rainfall phenomenon on statistical tools from a Spanish region. We want to quantify the effect of the climate change to verify the rapidity of its evolution across the variation of the probability distributions. Our conclusions have special interest for the agrarian insurances, which may make estimates of costs more realistically. In this work, the analysis mainly focuses on: The distribution of consecutive days without rain for each gauge stations and season. We estimate density Kernel functions and Generalized Pareto Distribution (GPD) for a network of station from the Ebro River basin until a threshold value u. We can establish a relation between distributional parameters and regional characteristics. Moreover we analyze especially the tail of the probability distribution. These tails are governed by law of power means that the number of events n can be expressed as the power of another quantity x : n(x) = x? . ? can be estimated as the slope of log-log plot the number of events and the size. The most convenient way to analyze n(x) is using the empirical probability distribution. Pr(X > x) ? x-?. The distribution of rainfall over percentile of order 0.95 from wet days at the seasonal scale and in a yearly scale with the same treatment of tails than in the previous section.
International
Si
JCR
Si
Title
Natural Hazards And Earth System Sciences
ISBN
1561-8633
Impact factor JCR
1,983
Impact info
Datos JCR del año 2011
Volume
12
10.5194/nhess-12-2127-2012
Journal number
From page
2127
To page
2137
Month
SIN MES
Ranking
Participants
  • Autor: José Luis Valencia Delfa (UPM)
  • Autor: Ana Maria Tarquis Alfonso (UPM)
  • Autor: Antonio Saa Requejo (UPM)
  • Autor: Jose Maria Gasco Montes (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Matemática Aplicada a la Ingeniería Agronómica
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)