A Statistical Review of Top Cited ISI Papers Regarding the Different Effects of Climate Change on Rivers (original) (raw)
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Perspective Impact on Water Environment and Hydrological Regime Owing to Climate Change: A Review
Hydrology
This study summarizes reviews on climate change’s impact on the water environment and hydrological regime. The results indicate a strong relationship between the climatological parameters and hydrological patterns. This relationship can be determined in two steps: (1) define the variations in climatological factors, particularly temperature and precipitation, and (2) measure the variations in runoff and inflows to streams and river systems using different statistical and global climate modeling approaches. It is evident that the increasing global temperatures have significant positive effects on runoff variations and evapotranspiration. Similarly, the increase in temperature has speeded up the melting of glaciers and ice on hilly terrains. This is causing frequent flash floods and a gradual rise in the sea level. These factors have altered the timing of stream flow into rivers. Furthermore, the accumulation of greenhouse gases, variations in precipitation and runoff, and sea-level r...
An investigation into the qualitative and quantitative effects of climate change on rivers in Iran
The climate change phenomenon has had a negative effect on agriculture, environment and different water resource systems, especially in rivers due its impact on climatic factors such as rainfall, temperature and solar radiation. Ignoring climate change studies in the hydraulic systems designs will cause severe implications. Even a minor change in hydraulic variables will lead to tangible changes in the water resources system operation. Therefore, the effects of climate change on rivers have been briefly studied with a conceptual point of view.
Simulation of climate change impact in a river basin in Eastern India
This study simulates the impact of climate change in Subarnarekha river basin in eastern India using climate projections of regional climate model (PRECIS) of the Hadley Centre, UK, for A1B scenario. Hydrological model, HEC-HMS (of Hydrologic Engineering Center, USA), calibrated for the basin was used to simulate the daily hydrological condition for baseline period and future period of 2015–2030. A comparative analysis of precipitation, potential evapotranspiration, streamflow under changed climate scenario and those parameters (under baseline scenario) revealed decrease of rainfall and corresponding decrease of stream flow in the June–September (JJAS) period for almost half of the future years. Increase of potential evapotranspiration for the months of February to June, increase of annual 24-h maximum rainfall and associated increase in the annual flood maxima with time of occurrence of peak rainfall and peak flow shifting from monsoon period to the month of May were also noted.
Climate Change Impact Assessment on Stream flow of Ganjal River, India
Ecology, Environment and Conservation
Hydrological models often predict a changing situation, necessitating further research into models to make water resource management more realistic. This study uses soil and water assessment tool (SWAT) model to analyse the possible effect of climate change on the future streamflow of the Ganjal river watershed. It is located in middle sub-basin of the Narmada River, India. The model was calibrated for 1988-2007 and validated for 2008-2015 using monthly discharge data at the watershed outlet. The calibrated model was then run for the future (2025-52) using climate model output. The study of climate change is completed using the Representative Concentration Pathway scenarios, RCP 4.5 and 8.5 of three different General Circulation Models (GCM). The downscaled output of these GCM from the Coordinated Regional Downscaling Experiment (CORDEX) has been used in this study after bias correction. The findings demonstrate the significance of climate changeâs effect on streamflow.
Assessment of Hydrologic Impacts of Climate Change in Tunga-Bhadra River Basin, India
Climate change would significantly affect many hydrologic systems, which in turn would affect the water availability, runoff, and the flow in rivers. This study evaluates the impacts of possible future climate change scenarios on the hydrology of the catchment area of the Tunga-Bhadra River, upstream of the Tungabhadra dam. The Hydrologic Engineering Center’s Hydrologic Modeling System version 3.4 (HEC-HMS 3.4) is used for the hydrological modeling of the study area. Linear-regression based Statistical DownScaling Model version 4.2 (SDSM 4.2) is used to downscale the daily maximum and minimum temperature, and daily precipitation in the four subbasins of the study area. The large scale climate variables for the A2 and B2 scenarios obtained from the Hadley Centre Coupled Model, version 3 (HadCM3) are used. After model calibration and testing the downscaling procedure, the hydrological model is run for the three future periods: 2011-2040, 2041-2070 and 2071-2099. The impacts of climate change on the basin hydrology are assessed by comparing the present and future streamflow and the evapotranspiration estimates. Results of the water balance study suggest increasing precipitation and runoff and decreasing actual evapotranspiration losses over the subbasins in the study area.
The Indus, Ganges and Brahmaputra river basins support 700 million people in Asia. The water resources are used for irrigation, drinking, industry, navigation and hydropower. This paper reviews the literature on the impact of climate change on the hydrological regime of these river basins and suggests that the different basins are likely to be affected in different ways. Climate change will have a marked affect on meltwater in the Indus Basin and may result in increased flood risk in the Brahmaputra Basin. The overall impact on annual discharge is likely to be low, but more studies are required to understand intra-annual changes and the impact of extreme events.
Journal of Water and Climate Change, 2020
Climate change impact on the hydrology of the Betwa river basin, located in the semi-arid region of Central India, was assessed using the Soil and Water Assessment Tool (SWAT), driven by hypothetical scenarios and Model of Interdisciplinary Research on Climate version 5 (MIROC5) Global Circulation Model projections. SWAT-Calibration and Uncertainty Programs (SWAT-CUP) was used for calibration and validation of SWAT using multi-site streamflow data. The coefficient of determination, Nash–Sutcliffe efficiency, RMSE-observations standard deviation ratio and percent bias during calibration and validation period varied from 0.83–0.92, 0.6–0.91, 0.3–0.63 and −19.8–19.3, respectively. MIROC5 projections revealed an increase in annual mean temperature in the range of 0.7–0.9 °C, 1.2–2.0 °C and 1.1–3.1 °C during the 2020s, 2050s, and 2080s, respectively. Rainfall is likely to increase in the range of 0.4–9.1% and 5.7–15.3% during the 2050s and 2080s, respectively. Simulation results indicate...