EVALUATION OF CLIMATE CHANGE IMPACTS ON WATER LEVEL, DISCHARGE, AND INUNDATION IN KINU AND KOKAI RIVER BASINS USING RRI MODEL

2018 ◽  
Vol 74 (5) ◽  
pp. I_7-I_12
Author(s):  
Shiori ABE ◽  
Yasutaka WAKAZUKI ◽  
Yosuke NAKAMURA ◽  
Takahiro SAYAMA
Keyword(s):  
Climate Change ◽  
Water Level ◽  
Climate Change Impacts ◽  
River Basins

Uncertainty assessment of climate change impacts for hydrologically distinct river basins

2012 ◽  
Vol 466-467 ◽  
pp. 73-87 ◽  
Author(s):  
Il-Won Jung ◽  
H. Moradkhani ◽  
H. Chang
Keyword(s):  
Climate Change ◽  
Climate Change Impacts ◽  
River Basins ◽  
Uncertainty Assessment

scholarly journals Addressing Climate Change Risks Influencing Cryosphere-Fed Kuhl Irrigation System in the Upper Indus Basin of Pakistan

2020 ◽  
Vol 9 (2) ◽  
pp. 184-203
Author(s):  
Arshad Ashraf ◽  
Ghani Akbar
Keyword(s):  
Climate Change ◽  
High Risk ◽  
Irrigation System ◽  
Climate Change Impacts ◽  
River Basins ◽  
Snow Avalanche ◽  
Indus Basin ◽  
Irrigated Agriculture ◽  
Lake Area ◽  
Upper Indus Basin

Cryosphere-fed kuhl irrigation system forms a major lifeline for agriculture and livelihood development in the Himalayan region. The system is highly vulnerable to climate change impacts like glacier retreat, glacial lake outburst floods, snow avalanches and landslides especially in the upper Indus Basin (UIB). It is necessary to conduct reassessment of climate change impacts and find coping strategies for sustainable agriculture development in this mountainous region. In the present study, risks of glacier depletion , lakes outburst flood, snow avalanche and landslide hazards impacting cryosphere-fed kuhl irrigation system in 10 river basins of the UIB of Pakistan were analyzed using multi-hazard indexing approach. High risk of glacier depletion was observed in the Astore and Swat river basins likely because of the combined effect of reduced snow precipitation and rising warm temperatures in these basins. The risk of expansion in aggregate lake area was high in the Indus sub-basin, moderate in the five basins (i.e., Hunza, Shigar, Shyok, Shingo and Astore), while it was low in the four basins (i.e., Swat, Chitral, Gilgit and Jhelum). More than 2% areas of Hunza and Shigar basins in the Karakoram range exhibited high risk of snow avalanche and landslide (SAL) hazard, while moderate SAL hazard was found in >40% areas of Chitral, Gilgit, Hunza and Shigar river basins. An effective early warning mechanism and provision of adequate resources for preparedness are essential to cope with negative impacts of climate change on irrigated agriculture in this region in future.

scholarly journals A Simplified Water Accounting Procedure to Assess Climate Change Impact on Water Resources for Agriculture across Different European River Basins

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1976 ◽  
Author(s):  
Johannes Hunink ◽  
Gijs Simons ◽  
Sara Suárez-Almiñana ◽  
Abel Solera ◽  
Joaquín Andreu ◽  
...  
Keyword(s):  
Climate Change ◽  
Water Resources ◽  
Expert Knowledge ◽  
Climate Change Impacts ◽  
River Basins ◽  
Climate Impacts ◽  
Green Water ◽  
Local Context ◽  
Water Fluxes ◽  
Water Accounting

European agriculture and water policies require accurate information on climate change impacts on available water resources. Water accounting, that is a standardized documentation of data on water resources, is a useful tool to provide this information. Pan-European data on climate impacts do not recognize local anthropogenic interventions in the water cycle. Most European river basins have a specific toolset that is understood and used by local experts and stakeholders. However, these local tools are not versatile. Thus, there is a need for a common approach that can be understood by multi-fold users to quantify impact indicators based on local data and that can be used to synthesize information at the European level. Then, policies can be designed with the confidence that underlying data are backed-up by local context and expert knowledge. This work presents a simplified water accounting framework that allows for a standardized examination of climate impacts on water resource availability and use across multiple basins. The framework is applied to five different river basins across Europe. Several indicators are extracted that explicitly describe green water fluxes versus blue water fluxes and impacts on agriculture. The examples show that a simplified water accounting framework can be used to synthesize basin-level information on climate change impacts which can support policymaking on climate adaptation, water resources and agriculture.

scholarly journals Future Climate Change Impacts on Streamflows of Two Main West Africa River Basins: Senegal and Gambia

Hydrology ◽  
2018 ◽  
Vol 5 (1) ◽  
pp. 21 ◽  
Author(s):  
Ansoumana Bodian ◽  
Alain Dezetter ◽  
Lamine Diop ◽  
Abdoulaye Deme ◽  
Koffi Djaman ◽  
...  
Keyword(s):  
Climate Change ◽  
West Africa ◽  
Climate Change Impacts ◽  
River Basins ◽  
Future Climate ◽  
Future Climate Change

An ensemble analysis of climate change impacts on streamflow seasonality across 11 large river basins

2017 ◽  
Vol 141 (3) ◽  
pp. 401-417 ◽  
Author(s):  
S. Eisner ◽  
M. Flörke ◽  
A. Chamorro ◽  
P. Daggupati ◽  
C. Donnelly ◽  
...  
Keyword(s):  
Climate Change ◽  
Climate Change Impacts ◽  
River Basins ◽  
Large River ◽  
Large River Basins ◽  
Ensemble Analysis

scholarly journals Future hydrology and hydrological extremes under climate change in Asian river basins

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sangam Shrestha ◽  
Deg-Hyo Bae ◽  
Panha Hok ◽  
Suwas Ghimire ◽  
Yadu Pokhrel
Keyword(s):  
Climate Change ◽  
Southeast Asia ◽  
River Flow ◽  
Climate Change Impacts ◽  
River Basins ◽  
Global Scale ◽  
Climatic Conditions ◽  
Spatiotemporal Variability ◽  
Climatic Extremes ◽  
The Impact

AbstractThe diverse impacts of anthropogenic climate change in the spatiotemporal distribution of global freshwater are generally addressed through global scale studies, which suffer from uncertainties arising from coarse spatial resolution. Multi-catchment, regional studies provide fine-grained details of these impacts but remain less explored. Here, we present a comprehensive analysis of climate change impacts on the hydrology of 19 river basins from different geographical and climatic conditions in South and Southeast Asia. We find that these two regions will get warmer (1.5 to 7.8 °C) and wetter (− 3.4 to 46.2%) with the expected increment in river flow (− 18.5 to 109%) at the end of the twenty-first century under climate change. An increase in seasonal hydro-climatic extremes in South Asia and the rising intensity of hydro-climatic extremes during only one season in Southeast Asia illustrates high spatiotemporal variability in the impact of climate change and augments the importance of similar studies on a larger scale for broader understanding.

scholarly journals Future Climate Change Impacts on River Discharge Seasonality for Selected West African River Basins

2021 ◽  
Author(s):  
Toju Esther Babalola ◽  
Philip Gbenro Oguntunde ◽  
Ayodele Ebenezer Ajayi ◽  
Francis Omowonuola Akinluyi
Keyword(s):  
Climate Change ◽  
River Basin ◽  
River Discharge ◽  
Climate Change Impacts ◽  
River Basins ◽  
West African ◽  
High Flow ◽  
Rcp 8.5 ◽  
Discharge Volume ◽  
Niger River

The changing climate is a concern to sustainable water resources. This study examined climate change impacts on river discharge seasonality in two West African river basins; the Niger river basin and the Hadejia-Jama’are Komadugu-Yobe Basin (HJKYB). The basins have their gauges located within Nigeria and cover the major climatic settings. Here, we set up and validated the hyper resolution global hydrological model PCR-GLOBWB for these rivers. Time series plots as well five performance evaluation metrics such as Kling–Gupta efficiency (KGE),); the ratio of RMSE-observations standard deviation (RSR); per cent bias (PBIAS); the Nash–Sutcliffe Efficiency criteria (NSE); and, the coefficient of determination (r2), were employed to verify the PCR-GLOBWB simulation capability. The validation results showed from satisfactory to very good on individual rivers as specified by PBIAS (−25 to 0.8), NSE (from 0.6 to 0.8), RSR (from 0.62 to 0.4), r2 (from 0.62 to 0.88), and KGE (from 0.69 to 0.88) respectively. The impact assessment was performed by driving the model with climate projections from five global climate models for the representative concentration pathways (RCPs) 4.5 and 8.5. We examined the median and range of expected changes in seasonal discharge in the far future (2070–2099). Our results show that the impacts of climate change cause a reduction in discharge volume at the beginning of the high flow period and an increase in discharge towards the ending of the high flow period relative to the historical period across the selected rivers. In the Niger river basin, at the Lokoja gauge, projected decreases added up to 512 m3/s under RCP 4.5 (June to July) and 3652 m3/s under RCP 8.5 (June to August). The three chosen gauges at the HJKYB also showed similar impacts. At the Gashua gauge, discharge volume increased by 371 m3/s (RCP8.5) and 191 m3/s (RCP4.5) from August to November. At the Bunga gauge, a reduction/increase of -91 m3/s/+84 m3/s (RCP 8.5) and -40 m3/s/+31 m3/s/(RCP 4.5) from June to July/August to October was simulated. While at the Wudil gauge, a reduction/increase in discharge volumes of −39/+133 m3/s (RCP8.5) and −40/133 m3/s (RCP 4.5) from June to August/September to December is projected. This decrease is explained by a delayed start of the rainy season. In all four rivers, projected river discharge seasonality is amplified under the high-end emission scenario (RCP8.5). This finding supports the potential advantages of reduced greenhouse gas emissions for the seasonal river discharge regime. Our study is anticipated to provide useful information to policymakers and river basin development authorities, leading to improved water management schemes within the context of changing climate and increasing need for agricultural expansion.

scholarly journals Effects of Climate Changes on Water Resources: A Case of Mindu Dam in Morogoro Municipality, Tanzania

2021 ◽  
Vol 47 (3) ◽  
pp. 1252-1265
Author(s):  
Simon R Melchioly
Keyword(s):  
Climate Change ◽  
Water Resources ◽  
Water Level ◽  
Surface Area ◽  
Secondary Data ◽  
Climate Change Impacts ◽  
Coefficient Of Determination ◽  
Landsat 8 ◽  
Climate Data ◽  
Dam Reservoir

This paper presents the findings of the research conducted in Morogoro Municipality, central Tanzania. The main objective of the research was to assess the climate change impacts on water resources, taking the Mindu Dam as the case study. The study methodology involved collection, processing and analysis of both primary and secondary data. Data collection involved acquisition of Dam water level data, climate data, and Landsat 8 satellite imagery. Research findings showed that the maximum air temperature increased at a rate of 0.045% on a span of 30 years, while rainfall has been decreasing with time. Also there has been a decreasing trend of water level in the Mindu Dam such that the coefficient of determination (R2) appeared to be very small (0.95%). The area also has witnessed an increasing trend in wind speed (R2 = 63.4%) for the period 2014 to 2019. The results showed coefficient of determination (R2) for water production/supply of only 1.58%, while for water demand the coefficient of determination was R2 = 77.13%. Findings on the changes in surface area covered by the Mindu Dam reservoir due to climate change impacts showed that for the period of 19 years, the Mindu Dam reservoir surface area decreased by 0.57%. Keywords: Climate change; water resources; Mindu Dam; land use change

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