Hydrometeorological impact of climate change in two Mediterranean basins

Vozinaki, Anthi Eirini; Tapoglou, Evdokia; Tsanis, Ioannis K.

doi:10.1080/15715124.2018.1437742

Cited by 9 publications

(10 citation statements)

References 32 publications

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“…Over time, there was also a significant increase in the rainfed and irrigated CSs (32.41 and 20.14% respectively) EC (Table 2a). In the rainfed system the Fluvisols, Luvisols, and Calcisols increased EC by 21.21, 55.42 and 52.63%, respectively, which we believe is a clear indicator of the effect the climatic changes are perpetrating in the basin soils, in line with the pH indicator, and that are leading to increasingly lower precipitation and higher temperatures in the area soils [68,69,71,75] which dry out at bigger rates due to the increased evaporation over rainfall causing the leaching rates to be increasingly lower and thus fewer ions being washed from the soil.…”

Section: Electrical Conductivitymentioning

confidence: 63%

“…In rainfed soils, pH w stabilization may occur due to (a) the low leaching and drainage capacity of most study area soils that caused the soil exchange complex (SEC) to be saturated with non-acid cations-mostly Ca 2+ and Mg 2+ -released by mineral weathering [12] leading to a limited presence of acid cations-Al 3+ and H + -in it and (b) the accentuated climatic changes that are rising exponentially causing lower precipitation and higher temperatures in the Mediterranean basin [68][69][70][71] whose soils tend to dry out at a faster rate, due to the higher evapotranspiration over precipitation causing the leaching rates to be increasingly lower and, thus, leaching ever fewer non-acid cations from the soil solution that accumulates in the SEC and, consequently, maintaining or raising pH w [65].…”

Section: Phmentioning

confidence: 99%

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Assessing Spatial and Temporal Variability for Some Edaphic Characteristics of Mediterranean Rainfed and Irrigated Soils

et al. 2019

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Mediterranean soils are particularly threatened by salinization and low levels of organic matter content. In order to assess an edaphic sustainable use, we need to study its characteristics and better understand the temporal and spatial evolution. In this study, a total of 14,852 ha located in a western Mediterranean basin were selected as the study site where 1417 and 1451 topsoil samples were analyzed in 2001/2002 and 2011/2012, respectively, for Soil Organic Matter (SOM) content, pH water (pHw) and electrical conductivity (EC). Classical statistics and geostatistics techniques were used and the individual soil samples were related with the cultural system (CS) practiced–rainfed/irrigation–and the Reference Soil Group (RSG)–Cambisols, Calcisols, Luvisols, and Fluvisols. Predictive maps were created by interpolation using the Ordinary Kriging algorithm. The main results of this study were that, when transitioning from a rainfed to irrigation CS, SOM content is maintained in Cambisols but decreases in the other RSGs, pHw is maintained and EC increases in Fluvisols, Luvisols, and Cambisols. Over time in the rainfed CS all RSGs maintained SOM and pHw but EC increased in Fluvisols, Luvisols, and Calcisols and in the irrigation CS SOM decreased in Luvisols, pHw increased in Fluvisols and Calcisols and EC increased in all RSGs.

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Section: Electrical Conductivitymentioning

confidence: 63%

Section: Phmentioning

confidence: 99%

Assessing Spatial and Temporal Variability for Some Edaphic Characteristics of Mediterranean Rainfed and Irrigated Soils

et al. 2019

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“…The integrated analysis of the reliability of the 11 EURO-CORDEX climate models' simulation data when compared to the observation data is presented for 69 meteorological stations of the island of Crete in AQUAMAN [25]. In addition, a synoptic EURO-CORDEX data reliability analysis is also performed for some of the 69 meteorological stations used [33]. Due to uncertainty in the future climate prediction, a climate model ensemble assessment is recommended against assessment using individual models in order to cover a wide range of climate sensitivities into hydrological projections [33].…”

Section: Study Area and Datamentioning

confidence: 99%

Climate Change Impact on the Frequency of Hydrometeorological Extremes in the Island of Crete

Tapoglou

Vozinaki

Tsanis

2019

Water

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Frequency analysis on extreme hydrological and meteorological events under the effect of climate change is performed in the island of Crete. Data from Regional Climate Model simulations (RCMs) that follow three Representative Concentration Pathways (RCP2.6, RCP4.5, RCP8.5) are used in the analysis. The analysis was performed for the 1985–2100 time period, divided into three equal-duration time slices (1985–2010, 2025–2050, and 2075–2100). Comparison between the results from the three time slices for the different RCMs under different RCP scenarios indicate that drought events are expected to increase in the future. The meteorological and hydrological drought indices, relative Standardized Precipitation Index (SPI) and Standardized Runoff index (SRI), are used to identify the number of drought events for each RCM. Results from extreme precipitation, extreme flow, meteorological and hydrological drought frequency analysis over Crete show that the impact of climate change on the magnitude of 100 years return period extreme events will also increase, along with the magnitude of extreme precipitation and flow events.

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“…Tapoglou et al [27] already mentioned the need for a lower than daily time step of analysis, in order to investigate the possible risks of hydro-meteorological extremes in Crete's basins. Vozinaki et al [13] have also stated the urgency for sub-daily data for more precise climate change projections on Mediterranean catchments. With respect to the time step of precipitation records, the hydrological analysis shows that for small basins of a similar size, time step data of 1 h or more does not produce reliable results on modeling peak discharge for short-duration and high-intensity precipitation events.…”

Section: Discussionmentioning

confidence: 99%

“…Climate change effect is expected to produce more intense and more frequent heavy precipitation events [12]. Many researchers have studied the hydrological impacts of climate change in several Mediterranean basins, based on different Representative Concentration Pathways [13,14], as well as bias-corrected and downscaled datasets from Global Climate Models and Regional Climate Models [15].…”

Section: Introductionmentioning

confidence: 99%

Analysis of a Flash Flood in a Small Basin in Crete

Sarchani

Tsanis

2019

Water

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Climate change will have a greater impact on the severity of flash floods, since precipitation intensity is expected to increase, even in areas where a reduction of precipitation is possible. This change in climate is expected to increase flood wave speed and its flood wave area extent. A case study of a small basin in the island of Crete was conducted to examine this effect, following the calibration and validation of the flow hydrograph of a flash flood event, in order to achieve model verification with the post-flood data. It was found that the most important parameters that affect the timing and magnitude of the peak discharge are the storage coefficient, the impervious rate and the curve number, as well as the time of concentration. Rainfall distribution was examined in different time intervals in order to study the effect of the intensity of precipitation on the peak hydrograph. From the precipitation records and according to the size of the watershed, the time step of the precipitation in the simulation model is recommended to be less than an hour. In other areas around the basin of interest, severe storms known as Medicanes that pass over Crete can produce higher precipitation in shorter time intervals. The impact of climate change scenarios results in an increase on the peak discharge by creating precipitation of higher intensity. Furthermore, the intensification of precipitation due to climate change results in higher flood depths and flooded area extent, as well as wave velocities.

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Hydrometeorological impact of climate change in two Mediterranean basins

Cited by 9 publications

References 32 publications

Assessing Spatial and Temporal Variability for Some Edaphic Characteristics of Mediterranean Rainfed and Irrigated Soils

Assessing Spatial and Temporal Variability for Some Edaphic Characteristics of Mediterranean Rainfed and Irrigated Soils

Climate Change Impact on the Frequency of Hydrometeorological Extremes in the Island of Crete

Analysis of a Flash Flood in a Small Basin in Crete

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