Quantification and uncertainty of the impact of climate change on river discharge and sediment yield in the Dehbar river basin in Iran

Sharafati, Ahmad; Pezeshki, Elnaz; Shahid, Shamsuddin; Motta, Davide

doi:10.1007/s11368-020-02632-0

Cited by 43 publications

(11 citation statements)

References 74 publications

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“…Clearly, there was an obvious discrepancy in the reduction percentage of monthly mean runoff between the two basins. Considering the effects of changes in runoff and C-Q relationship according to Equation (12), there should exist different causes for sediment discharge reduction between the two basins, and we applied the differential method to quantify the contributions of changes in runoff and sediment concentration in the following section. concentration but not with the rainfall erosivity, and that the reductions of the sediment discharge, runoff and sediment concentration were all close to 100% in non-flood season.…”

Section: Attribution Analysis On Monthly Scalementioning

confidence: 99%

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Quantitative Ascription of Sediment Discharge Changes of Two Highly Sediment-Loaded Tributaries of the Yellow River in China: The Importance of Selecting Rainfall Index and Timescale

Shi

Jia

et al. 2021

Water

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River sediment load has been changing conspicuously worldwide. The famous sediment-laden Yellow River in China has also had a declining sediment load in the past decades. This study made a quantitative ascription of the sediment discharge changes by non-parametric Pettitt test, rainfall and sediment discharge characteristic index calculation, correlation test, double cumulative curve regression and solving differential equation in the Huangfu and the Kuye basins in the main sediment sources of the Yellow River. The results indicated that: (1) The sediment discharge decreased significantly from 1956 to 2016, while the rainfall and rainfall erosivity only had a visible but insignificant decreasing trend. (2) Rainfall erosivity is better than other rainfall characteristic indexes in relation with sediment discharge. (3) The anthropogenic factor was the main driver for the reduction of sediment discharge with a percentage of 70.2–90.5% in different periods. The contribution of rainfall changes in flood season to sediment discharge reduction surpassed that in the whole year. (4) A percentage of 88% and 93% of suspended sediment yield reduction was attributed to streamflow reduction, and 12% and 7% to changes in C-Q relationship in the Huangfu and the Kuye basins, respectively.

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Section: Attribution Analysis On Monthly Scalementioning

confidence: 99%

“…The characteristic indexes of rainfall include annual rainfall, flood season rainfall, rainfall erosivity, rainfall concentration and so on. Numerous previous studies applied annual precipitation to analyze the impact of rainfall on annual sediment discharge [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Ascription of Sediment Discharge Changes of Two Highly Sediment-Loaded Tributaries of the Yellow River in China: The Importance of Selecting Rainfall Index and Timescale

Shi

Jia

et al. 2021

Water

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“…The use of GCMs has been the most crucial method for studying the implications of climate change (Wu et al, 2015). In a global scale, several studies have quantifi ed potential changes in hydrological dynamics of river basins by climate change projections on the basis of GCMs (i.e., Sharafati et al, 2020;Ismail et al, 2020;Ebrahim et al, 2012;Hajian et al, 2016;QIN & LU, 2014;Emam et al, 2016;Yilmaz & Imteaz, 2011). The fi ndings of these studies indicate that hydrological processes are highly sensitive to precipitation and temperature.…”

Section: Introductionmentioning

confidence: 99%

“…The fi ndings of these studies indicate that hydrological processes are highly sensitive to precipitation and temperature. Therefore, climate change can have a signifi cant eff ect on hydrological regime of a river basin (Sharafati et al, 2020(Sharafati et al, ). et al, 2018Sharafati et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Numerical assessment of climate change impact on the hydrological regime of a small Mediterranean river, Lesvos Island, Greece

Koutsovili

Tzoraki

Theodossiou

et al. 2021

Acta Horticulturae Et Regiotecturae

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Frequency of flash floods and droughts in the Mediterranean climate zone is expected to rise in the coming years due to change of its climate. The assessment of the climate change impact at a basin scale is essential for developing mitigation and adaptation plans. This study analyses the variation of the hydrologic regime of a small Mediterranean river (the Kalloni river in Lesvos Island, Greece) by the examination of possible future climate change scenarios. The hydrologic response of the basin was simulated based on Hydrologic Modeling System developed by the Hydrologic Engineering Center (HEC-HMS). Weather Generator version 6 from the Long Ashton Research Station (LARS-WG 6.0) was utilized to forecast climate data from 2021 to 2080. These forecasted climate data were then assigned as weather inputs to HEC-HMS to downscale the climate predictions of five large-scale general circulation models (GCMs) for three possible emission scenarios (such as RCP 2.6, RCP 4.5, and RCP 8.5). The alteration of the Kalloni hydrologic regime is evaluated by comparing GCMs based estimates of future streamflow and evapotranspiration with business as usual (BaU) scenario. Variation was noted in seasonal and in annual scale forecasting of long-term average discharges, which show increasing trend in autumn and decreasing in summer and there is observed a general upward trend of actual evapotranspiration losses.

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Suspended Sediment Modeling Using Sequential Minimal Optimization Regression and Isotonic Regression Algorithms Integrated with an Iterative Classifier Optimizer

Safari

Meshram²,

Khosravi

et al. 2022

Pure Appl. Geophys.

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Quantification and uncertainty of the impact of climate change on river discharge and sediment yield in the Dehbar river basin in Iran

Cited by 43 publications

References 74 publications

Quantitative Ascription of Sediment Discharge Changes of Two Highly Sediment-Loaded Tributaries of the Yellow River in China: The Importance of Selecting Rainfall Index and Timescale

Quantitative Ascription of Sediment Discharge Changes of Two Highly Sediment-Loaded Tributaries of the Yellow River in China: The Importance of Selecting Rainfall Index and Timescale

Numerical assessment of climate change impact on the hydrological regime of a small Mediterranean river, Lesvos Island, Greece

Suspended Sediment Modeling Using Sequential Minimal Optimization Regression and Isotonic Regression Algorithms Integrated with an Iterative Classifier Optimizer

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