Trends in daily rainfall in the Iberian Peninsula from 1951 to 2002
Abstract An analysis of 22 sites of daily precipitation records over the period 1951–2002 for the Iberian Peninsula is presented. Annual and seasonal total precipitation ( P ), number of wet days ( N ), precipitation intensity ( I ), the 95th percentile ( P 95), and percentage of rain falling on day...
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crwiley:10.1002/joc.1409 2024-09-15T18:23:48+00:00 Trends in daily rainfall in the Iberian Peninsula from 1951 to 2002 Rodrigo, F. S. Trigo, Ricardo M. 2006 http://dx.doi.org/10.1002/joc.1409 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.1409 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.1409 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 27, issue 4, page 513-529 ISSN 0899-8418 1097-0088 journal-article 2006 crwiley https://doi.org/10.1002/joc.1409 2024-08-27T04:30:52Z Abstract An analysis of 22 sites of daily precipitation records over the period 1951–2002 for the Iberian Peninsula is presented. Annual and seasonal total precipitation ( P ), number of wet days ( N ), precipitation intensity ( I ), the 95th percentile ( P 95), and percentage of rain falling on days with rainfall above the 95th percentile (%) are investigated. The annual and seasonal trends for these variables and for all 22 rain gauges are analysed, using the Mann–Kendall statistic, and a linear regression model. Moreover, a t ‐test is applied to the difference between the means of two subperiods, respectively 1951–1976 and 1977–2002. Principal results indicate a decreasing trend in P , I , and P 95 for several northern and southern stations in winter; P , I , and P 95 in some southern stations in spring, I and P 95 in some southern stations in summer, and I in some northern and southern stations in autumn. The general behaviour is a decrease in the daily intensity of rainfall, while the number of wet days does not reveal pronounced changes. This pattern is valid for both annual and seasonal values of the indices. The decreasing trend found for I in winter and annual series for some localities may be related to the predominance of the positive phase of the North Atlantic Oscillation (NAO), but it is necessary to find other mechanisms for those stations and seasons not linked directly to NAO. Copyright © 2006 Royal Meteorological Society. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Wiley Online Library International Journal of Climatology 27 4 513 529 |
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Wiley Online Library |
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English |
description |
Abstract An analysis of 22 sites of daily precipitation records over the period 1951–2002 for the Iberian Peninsula is presented. Annual and seasonal total precipitation ( P ), number of wet days ( N ), precipitation intensity ( I ), the 95th percentile ( P 95), and percentage of rain falling on days with rainfall above the 95th percentile (%) are investigated. The annual and seasonal trends for these variables and for all 22 rain gauges are analysed, using the Mann–Kendall statistic, and a linear regression model. Moreover, a t ‐test is applied to the difference between the means of two subperiods, respectively 1951–1976 and 1977–2002. Principal results indicate a decreasing trend in P , I , and P 95 for several northern and southern stations in winter; P , I , and P 95 in some southern stations in spring, I and P 95 in some southern stations in summer, and I in some northern and southern stations in autumn. The general behaviour is a decrease in the daily intensity of rainfall, while the number of wet days does not reveal pronounced changes. This pattern is valid for both annual and seasonal values of the indices. The decreasing trend found for I in winter and annual series for some localities may be related to the predominance of the positive phase of the North Atlantic Oscillation (NAO), but it is necessary to find other mechanisms for those stations and seasons not linked directly to NAO. Copyright © 2006 Royal Meteorological Society. |
format |
Article in Journal/Newspaper |
author |
Rodrigo, F. S. Trigo, Ricardo M. |
spellingShingle |
Rodrigo, F. S. Trigo, Ricardo M. Trends in daily rainfall in the Iberian Peninsula from 1951 to 2002 |
author_facet |
Rodrigo, F. S. Trigo, Ricardo M. |
author_sort |
Rodrigo, F. S. |
title |
Trends in daily rainfall in the Iberian Peninsula from 1951 to 2002 |
title_short |
Trends in daily rainfall in the Iberian Peninsula from 1951 to 2002 |
title_full |
Trends in daily rainfall in the Iberian Peninsula from 1951 to 2002 |
title_fullStr |
Trends in daily rainfall in the Iberian Peninsula from 1951 to 2002 |
title_full_unstemmed |
Trends in daily rainfall in the Iberian Peninsula from 1951 to 2002 |
title_sort |
trends in daily rainfall in the iberian peninsula from 1951 to 2002 |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1002/joc.1409 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.1409 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.1409 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
International Journal of Climatology volume 27, issue 4, page 513-529 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.1409 |
container_title |
International Journal of Climatology |
container_volume |
27 |
container_issue |
4 |
container_start_page |
513 |
op_container_end_page |
529 |
_version_ |
1810464070115000320 |