Trends in indices of daily precipitation extremes in Catalonia (NE Spain), 1951–2003
-
Published:2011-12-09
Issue:12
Volume:11
Page:3213-3226
-
ISSN:1684-9981
-
Container-title:Natural Hazards and Earth System Sciences
-
language:en
-
Short-container-title:Nat. Hazards Earth Syst. Sci.
Author:
Turco M.,Llasat M. C.
Abstract
Abstract. The aim of this paper is to quantitatively characterize the climatology of daily precipitation indices in Catalonia (northeastern Iberian Peninsula) from 1951 to 2003. This work has been performed analyzing a subset of the ETCCDI (Expert Team on Climate Change Detection and Indices) precipitation indices calculated from a new interpolated dataset of daily precipitation, namely SPAIN02, regular at 0.2° horizontal resolution (around 20 km) and from two high-quality stations: the Ebro and Fabra observatories. Using a jack-knife technique, we have found that the sampling error of the SPAIN02 regional averaged is relatively low. The trend analysis has been implemented using a Circular Block Bootstrap procedure applicable to non-normal distributions and autocorrelated series. A running trend analysis has been applied to analyze the trend persistence. No general trends at a regional scale are observed, considering the annual or the seasonal regional averaged series of all the indices for all the time windows considered. Only the consecutive dry days index (CDD) at annual scale shows a locally coherent spatial trend pattern; around 30% of the Catalonia area has experienced an increase of around 2–3 days decade−1. The Ebro and Fabra observatories show a similar CDD trend, mainly due to the summer contribution. Besides this, a significant decrease in total precipitation (around −10 mm decade−1) and in the index "highest precipitation amount in five-day period" (RX5DAY, around −5 mm decade−1), have been found in summer for the Ebro observatory.
Publisher
Copernicus GmbH
Subject
General Earth and Planetary Sciences
Reference47 articles.
1. Alexander, L. V., Zhang, X., Peterson, T. C., Caesar, J., Gleason, B., Klein Tank, a. M. G., Haylock, M., Collins, D., Trewin, B., Rahimzadeh, F., Tagipour, a., Rupa Kumar, K., Revadekar, J., Griffiths, G., Vincent, L., Stephenson, D. B., Burn, J., Aguilar, E., Brunet, M., Taylor, M., New, M., Zhai, P., Rusticucci, M., and Vazquez-Aguirre, J. L.: Global observed changes in daily climate extremes of temperature and precipitation, J. Geophys. Res., 111, D05109, 2006. 2. Alexander, L. V., Tapper, N., Zhang, X., Fowler, H. J., Tebaldi, C., and Lynch, A.: Editorial Climate extremes: progress and future directions, International J. Climatol., 29, 317–319, 2009. 3. Alpert, P., Ben-Gai, T., Bahrahad, A., Benjamini, Y., Yekutieli, D., Colacino, M., Diodato, L., Ramis, C., Homar, V., Romero, R., and Others: The paradoxical increase of Mediterranean extreme daily rainfall in spite of decrease in total values, Geophys. Res. Lett., 29, 31–1, 2002. 4. Altava-Ortiz, V.: Caracteritzacío i monitoratge de les sequeres a Catalunya i nord del País Valencìa. C`alcul dâescenaris climàtics per al segle XXI (Characterising and monitoring droughts in Catalonia and Northern Valencian Country. Calculation of climatic scenarios for the 21st century, Ph.D. thesis, University of Barcelona, 2010. 5. Altava-Ortiz, V., Llasat, M. C., Ferrari, E., Atencia, A., and Sirangelo, B.: Monthly rainfall changes in Central and Western Mediterranean basins, at the end of the 20th and beginning of the 21st centuries, Int. J. Climatol., 31(13), 1943–1958, 2011.
Cited by
60 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|