Please login first
Luis Mediero   Dr.  University Lecturer 
Timeline See timeline
Luis Mediero published an article in December 2018.
Research Keywords & Expertise
0 A
0 Climate Change
0 Europe
0 Spain
0 Drought
0 water scarcity
Top co-authors See all
Luis Garrote

103 shared publications

Department of Civil Engineering: Hydraulics, Energy and Environment, Universidad Politécnica de Madrid, 28040 Madrid, Spain

Fateh Chebana

43 shared publications

Professor, Institut National de la recherche scientifique, Centre Eau-Terre-Environnement, 490 rue de la couronne, Québec, QC, Canada G1K 1A9

Carlos H. R. Lima

18 shared publications

Universidade de Brasília; Brasília Brazil

M. Spiliotis

11 shared publications

Department of Civil Engineering, Democritus University of Thrace, Xanthi, Greece

Alvaro Sordo-Ward

9 shared publications

Department of Civil Engineering: Hydraulics, Energy and Environment, Universidad Politécnica de Madrid, Madrid 28040, Spain

30
Publications
56
Reads
3
Downloads
372
Citations
Publication Record
Distribution of Articles published per year 
(2007 - 2018)
Total number of journals
published in
 
16
 
Publications See all
Article 0 Reads 0 Citations Links between different classes of storm tracks and the flood trends in Spain Marcus Suassuna Santos, Luis Mediero, Carlos Henrique Ribeir... Published: 01 December 2018
Journal of Hydrology, doi: 10.1016/j.jhydrol.2018.10.003
DOI See at publisher website
CONFERENCE-ARTICLE 14 Reads 0 Citations <strong>Identification of flood-rich and flood-poor periods</strong> <strong>by using the longest streamflow records in ... Luis Mediero Published: 15 November 2018
Proceedings, doi: 10.3390/ECWS-3-05829
DOI See at publisher website ABS Show/hide abstract

Currently, there is general concern about the non-stationary behaviour of flood series. Consequently, several studies have been conducted to identify large-scale patterns of change in such flood series. In Spain, a general decreasing trend was found in the period 1959-2009. However, a multi-temporal trend analysis with varying starting and ending years showed that trend signs depended on the period considered. Flood oscillations could influence the results, especially when flood-rich and flood-poor periods are located at the beginning or end of the series. In Spain, a flood-rich period in 1950-1970 seemed to lead to the generalised decreasing trend, as it was located at the beginning of the flood series. Nevertheless, the multi-temporal test can only find potential flood-rich and flood-poor periods qualitatively. A methodology has been developed to identify statistically significant flood-rich and flood-poor periods. The expected variability of floods under the stationarity assumption is compared with the variability of floods in observed flood series. The methodology is applied to the longest streamflow series available in Spain. Seven gauging stations located in near-natural catchments with continuous observations in the period 1942-2014 are selected. Both annual maximum and peak-over-threshold series are considered. Flood-rich and flood-poor periods in terms of flood magnitudes and the annual count of exceedances over a given threshold are identified. A flood-rich period in the beginning of the series and a flood-poor period at its end are identified in most of the selected sites. Accordingly, a flood-rich period placed at the beginning of the series followed by a flood-poor period influence the generalised decreasing trend in flood series previously found in Spain.

Article 0 Reads 7 Citations Climate-driven variability in the occurrence of major floods across North America and Europe Glenn A. Hodgkins, Paul H. Whitfield, Donald H. Burn, Jamie ... Published: 01 September 2017
Journal of Hydrology, doi: 10.1016/j.jhydrol.2017.07.027
DOI See at publisher website
Article 3 Reads 57 Citations Changing climate shifts timing of European floods Günter Blöschl, Julia Hall, Juraj Parajka, Rui A. P. Perdigã... Published: 10 August 2017
Science, doi: 10.1126/science.aan2506
DOI See at publisher website PubMed View at PubMed ABS Show/hide abstract
Flooding along the riverWill a warming climate affect river floods? The prevailing sentiment is yes, but a consistent signal in flood magnitudes has not been found. Blöschl et al. analyzed the timing of river floods in Europe over the past 50 years and found clear patterns of changes in flood timing that can be ascribed to climate effects (see the Perspective by Slater and Wilby). These variations include earlier spring snowmelt floods in northeastern Europe, later winter floods around the North Sea and parts of the Mediterranean coast owing to delayed winter storms, and earlier winter floods in western Europe caused by earlier soil moisture maxima.Science, this issue p. 588 see also p. 552 AbstractA warming climate is expected to have an impact on the magnitude and timing of river floods; however, no consistent large-scale climate change signal in observed flood magnitudes has been identified so far. We analyzed the timing of river floods in Europe over the past five decades, using a pan-European database from 4262 observational hydrometric stations, and found clear patterns of change in flood timing. Warmer temperatures have led to earlier spring snowmelt floods throughout northeastern Europe; delayed winter storms associated with polar warming have led to later winter floods around the North Sea and some sectors of the Mediterranean coast; and earlier soil moisture maxima have led to earlier winter floods in western Europe. Our results highlight the existence of a clear climate signal in flood observations at the continental scale.
Article 0 Reads 15 Citations The European 2015 drought from a hydrological perspective Gregor Laaha, Tobias Gauster, Lena M. Tallaksen, Jean-Philip... Published: 22 June 2017
Hydrology and Earth System Sciences, doi: 10.5194/hess-21-3001-2017
DOI See at publisher website ABS Show/hide abstract
In 2015 large parts of Europe were affected by drought. In this paper, we analyze the hydrological footprint (dynamic development over space and time) of the drought of 2015 in terms of both severity (magnitude) and spatial extent and compare it to the extreme drought of 2003. Analyses are based on a range of low flow and hydrological drought indices derived for about 800 streamflow records across Europe, collected in a community effort based on a common protocol. We compare the hydrological footprints of both events with the meteorological footprints, in order to learn from similarities and differences of both perspectives and to draw conclusions for drought management. The region affected by hydrological drought in 2015 differed somewhat from the drought of 2003, with its center located more towards eastern Europe. In terms of low flow magnitude, a region surrounding the Czech Republic was the most affected, with summer low flows that exhibited return intervals of 100 years and more. In terms of deficit volumes, the geographical center of the event was in southern Germany, where the drought lasted a particularly long time. A detailed spatial and temporal assessment of the 2015 event showed that the particular behavior in these regions was partly a result of diverging wetness preconditions in the studied catchments. Extreme droughts emerged where preconditions were particularly dry. In regions with wet preconditions, low flow events developed later and tended to be less severe. For both the 2003 and 2015 events, the onset of the hydrological drought was well correlated with the lowest flow recorded during the event (low flow magnitude), pointing towards a potential for early warning of the severity of streamflow drought. Time series of monthly drought indices (both streamflow- and climate-based indices) showed that meteorological and hydrological events developed differently in space and time, both in terms of extent and severity (magnitude). These results emphasize that drought is a hazard which leaves different footprints on the various components of the water cycle at different spatial and temporal scales. The difference in the dynamic development of meteorological and hydrological drought also implies that impacts on various water-use sectors and river ecology cannot be informed by climate indices alone. Thus, an assessment of drought impacts on water resources requires hydrological data in addition to drought indices based solely on climate data. The transboundary scale of the event also suggests that additional efforts need to be undertaken to make timely pan-European hydrological assessments more operational in the future.
Article 0 Reads 7 Citations The European 2015 drought from a hydrological perspective Gregor Laaha, Tobias Gauster, Lena M. Tallaksen, Jean-Philip... Published: 26 July 2016
Hydrology and Earth System Sciences Discussions, doi: 10.5194/hess-2016-366
DOI See at publisher website ABS Show/hide abstract
In 2015 large parts of Europe were affected by a drought. In two companion papers we summarize a collaborative initiative of members of UNESCO’s EURO FRIEND-Water program to perform a timely pan-European assessment of the event. In this second paper, we analyse the event of 2015 relative to the event of 2003 based on streamflow observations. Analyses are based on range of low flow and hydrological drought indices for about 800 records across Europe that were collected in a community effort based on a common protocol. We compare the hydrological footprints of both events with the meteorological footprints presented by Ionita et al. (2016), in order to learn from similarities and differences of both perspectives and to draw conclusions for drought management. Overall, the hydrological drought of 2015 is characterised by a different spatial extent than the drought of 2003. In terms of low flow magnitude, a region around the Czech Republic was most affected with annual low flows that exhibited return intervals of 100 years and more. In terms of deficit volumes, the geographical centre of the event was in the area of Southern Germany where the drought lasted particularly long. A detailed assessment at various spatial and temporal scales showed that the different behaviour in these regions was also a result of diverging wetness preconditions in the catchments. Extreme droughts emerged where antecedent conditions were particularly dry. In regions with wet preconditions, low flow events developed later, and were mostly less severe. The space-time patterns of monthly low flow characteristics show that meteorological and hydrological events spread differently across Europe, and they evolved differently in regard to extent and severity. The results underline that drought is a hazard that leaves different footprints on the various components of the water cycle, on different spatial and temporal scales. The different dynamic development of major hydrometeorological characteristics, temperature and precipitation anomalies versus the streamflow magnitude, duration and deficit volume also determine differences in the impacts of hydrological drought on various water use sectors and on river ecology. For an assessment of drought impacts on water resources, therefore, hydrological data is required in addition to the hydro-meteorological drought indices. Additional efforts with a pan-European dimension need to be undertaken to make timely hydrological assessments more operational in the future.
Top