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Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/46941
Title: Recent trends in Iberian streamflows (1945–2005)
Authors: Lorenzo-Lacruz, Jorge; Vicente Serrano, Sergio M.; López-Moreno, Juan I.; Morán-Tejeda, Enrique; Zabalza, Javier
Keywords: River discharges
Kendall tau
Water management strategies
Regulation types
Riverflow trends
Iberian Peninsula
Issue Date: 11-Jan-2012
Publisher: Elsevier
Citation: Journal of Hydrology 414-415: 463-475 (2012)
Abstract: This paper analyzes streamflow trends in 187 sub-basins in the Iberian Peninsula for the period 1945– 2005. A database of monthly river discharges for the entire Iberian Peninsula including natural and regulated river regimes enabled assessment of the magnitude and spatial patterns and mechanisms of the hydrological trends. Annual and seasonal trend analyses were conducted. The results showed a marked decrease in annual, winter, and spring streamflows in most of the Iberian sub-basins, especially those in the south. In addition, changes in the seasonality of river regimes have occurred, most of them as consequence of dam regulation and water management strategies. We showed how river regulation by dams does not affect the sign of the trends, but its magnitude, by decreasing the releases during winter to meet the demand of water in summer creating important seasonal differences. The decrease of streamflows during the second half of the Twentieth Century in the Iberian Peninsula may accelerate in coming decades, as future climate projections show a generalized decrease in precipitation and more evapotranspiration induced by higher temperatures.
Description: 12 páginas, 7 figuras
Publisher version (URL): http://dx.doi.org/10.1016/j.jhydrol.2011.11.023
URI: http://hdl.handle.net/10261/46941
ISSN: 0022-1694
DOI: 10.1016/j.jhydrol.2011.11.023
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