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Trends in frequency indices of daily precipitation over the Iberian Peninsula during the last century

  • Datos identificativos

    Identificador: imarina:9381767
    Handle: https://hdl.handle.net/20.500.11797/imarina9381767
    Autores:
    Gallego MCTrigo RMVaquero JMBrunet MGarcía JASigró JValente MA
    Resumen:
    This study provides the first long-term assessment of changes in precipitation associated with different rainfall categories over the Iberian Peninsula (IP). Using recently digitized data from 27 stations in Portugal and Spain, we have examined trends of precipitation indices for the complete period 1903-2003 and the two subperiods 1903-1953 and 1954-2003. These indices were evaluated seasonally according to five rainfall categories: total rainfall (0.2 mm), light rainfall (0.2 and <2.5 mm), moderate rainfall (2.5 and <7.5 mm), intense rainfall (7.5 mm), and very intense rainfall (15 mm). For the complete period 1903-2003, we have found that the total number of rainy days and that of light rainfall are increasing at many observatories over the IP for all seasons (except in the western zone of Portugal and the Cdiz gulf, where they are decreasing). Both subperiods show opposite behaviors in fall and spring. During the first (second) subperiod spanning 1903-1953 (1954-2003), we can find a generalized decrease (increase) in the number of rainy days in fall in all rainfall categories. In spring, an increase in the number of rainy days is found mainly for total, moderate, and intense categories for the first subperiod, and a slight decrease during the second. In winter, we have verified a decrease in the number of rainy days mainly for total, moderate, and intense rainfall categories in the second subperiod. Finally in relation to the maximum length of dry spells for both subperiods, most observatories show significant trends opposite those of the total number of rainy days. It is worth noticing that the contrasting evolution of trends found between the first and second halves of the twentieth century could only be characterized in this work following a recent comprehensive

  • Otros:

    Autor según el artículo: Gallego MC; Trigo RM; Vaquero JM; Brunet M; García JA; Sigró J; Valente MA
    Departamento: Geografia
    Autor/es de la URV: Brunet India, Manuela Catalina / Sigro Rodríguez, Francisco Javier
    Palabras clave: Life below water
    Resumen: This study provides the first long-term assessment of changes in precipitation associated with different rainfall categories over the Iberian Peninsula (IP). Using recently digitized data from 27 stations in Portugal and Spain, we have examined trends of precipitation indices for the complete period 1903-2003 and the two subperiods 1903-1953 and 1954-2003. These indices were evaluated seasonally according to five rainfall categories: total rainfall (0.2 mm), light rainfall (0.2 and <2.5 mm), moderate rainfall (2.5 and <7.5 mm), intense rainfall (7.5 mm), and very intense rainfall (15 mm). For the complete period 1903-2003, we have found that the total number of rainy days and that of light rainfall are increasing at many observatories over the IP for all seasons (except in the western zone of Portugal and the Cdiz gulf, where they are decreasing). Both subperiods show opposite behaviors in fall and spring. During the first (second) subperiod spanning 1903-1953 (1954-2003), we can find a generalized decrease (increase) in the number of rainy days in fall in all rainfall categories. In spring, an increase in the number of rainy days is found mainly for total, moderate, and intense categories for the first subperiod, and a slight decrease during the second. In winter, we have verified a decrease in the number of rainy days mainly for total, moderate, and intense rainfall categories in the second subperiod. Finally in relation to the maximum length of dry spells for both subperiods, most observatories show significant trends opposite those of the total number of rainy days. It is worth noticing that the contrasting evolution of trends found between the first and second halves of the twentieth century could only be characterized in this work following a recent comprehensive digitization of historical Iberian precipitation data from the first decades of the twentieth century. Copyright 2011 by the American Geophysical Union.
    Áreas temáticas: Water science and technology Space and planetary science Soil science Química Polymers and plastics Planejamento urbano e regional / demografia Physical and theoretical chemistry Paleontology Oceanography Meteorology & atmospheric sciences Materials chemistry Materiais Matemática / probabilidade e estatística Interdisciplinar Geosciences, multidisciplinary Geosciences, interdisciplinary Geophysics Geografía Geociências Geochemistry and petrology Geochemistry & geophysics Forestry Engenharias iv Engenharias iii Engenharias ii Engenharias i Ecology Earth-surface processes Earth and planetary sciences (miscellaneous) Condensed matter physics Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência da computação Biodiversidade Atmospheric science Astronomy & astrophysics Astronomia / física Aquatic science
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: javier.sigro@urv.cat javier.sigro@urv.cat manola.brunet@urv.cat
    Identificador del autor: 0000-0003-0969-0338 0000-0003-0969-0338 0000-0002-9386-710X
    Fecha de alta del registro: 2024-11-16
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    Enlace a la fuente original: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2010JD014255
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Journal Of Geophysical Research B: Solid Earth. 116 (2):
    Referencia de l'ítem segons les normes APA: Gallego MC; Trigo RM; Vaquero JM; Brunet M; García JA; Sigró J; Valente MA (2011). Trends in frequency indices of daily precipitation over the Iberian Peninsula during the last century. Journal Of Geophysical Research B: Solid Earth, 116(2), -. DOI: 10.1029/2010JD014255
    DOI del artículo: 10.1029/2010JD014255
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2011
    Tipo de publicación: Journal Publications

  • Palabras clave:

    Aquatic Science,Astronomy & Astrophysics,Atmospheric Science,Earth and Planetary Sciences (Miscellaneous),Earth-Surface Processes,Ecology,Forestry,Geochemistry & Geophysics,Geochemistry and Petrology,Geophysics,Geosciences, Interdisciplinary,Geosciences, Multidisciplinary,Meteorology & Atmospheric Sciences,Oceanography,Paleontology,Soil Sc
    Life below water
    Water science and technology
    Space and planetary science
    Soil science
    Química
    Polymers and plastics
    Planejamento urbano e regional / demografia
    Physical and theoretical chemistry
    Paleontology
    Oceanography
    Meteorology & atmospheric sciences
    Materials chemistry
    Materiais
    Matemática / probabilidade e estatística
    Interdisciplinar
    Geosciences, multidisciplinary
    Geosciences, interdisciplinary
    Geophysics
    Geografía
    Geociências
    Geochemistry and petrology
    Geochemistry & geophysics
    Forestry
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Ecology
    Earth-surface processes
    Earth and planetary sciences (miscellaneous)
    Condensed matter physics
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Ciência da computação
    Biodiversidade
    Atmospheric science
    Astronomy & astrophysics
    Astronomia / física
    Aquatic science

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