Global water gaps under future warming levels

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 30, 2025

Abstract Understanding the impacts of climate change on water resources is crucial for developing effective adaptation strategies. We quantify “water gaps”, or unsustainable use – shortfall where demand exceeds supply, resulting in scarcity. baseline and future gaps using a multi-model analysis that incorporates two plausible warming scenarios. The global gap stands at 457.9 km 3 /yr, with projections indicating an increase 26.5 /yr (+5.8%) 67.4 (+14.7%) under 1.5 °C scenarios, respectively. These highlight uneven impact levels gaps, emphasizing need continued mitigation to alleviate stress resources. Our results also underscore unequal needs across countries basins, influenced by varying important regional differences model variability complicating projections. Robust management strategies are needed tackle escalating scarcity caused warming.

Language: Английский

---

Summary of the 2023 (1st edition) Report of TCEP (Tracking Clean Energy Progress) by the International Energy Agency (IEA), and Proposed Process for Computing a Single Aggregate Rating

E3S Web of Conferences, Journal Year: 2025, Volume and Issue: 601, P. 00048 - 00048

Published: Jan. 1, 2025

We provide a summary of the progress all 53 assessed components describing global alignment with Net Zero Emissions by 2050 Scenario (NZE) International Energy Agency (IEA), an intermediate trajectory scope 2030. The (grouped in eight categories) cover sectors (such as Transport, and Buildings), subsectors Aviation, Building Envelopes), technologies Biofuels, Electrification), infrastructure cross-cutting strategies CO2 Transport Storage, Electrolyzers). For each component, IEA assigned one three qualitative levels; namely “On track”, “More efforts needed”, or “Not on track”. IEA’s assessment results were made publicly available form online web-based report, titled “Tracking Clean Progress”, TCEP, which was published 12/July/2023. Out TCEP’s components, only rated these are (1) Solar Photovoltaic (PV), (2) Electric Vehicles (EV), (3) Lighting. remaining 50 TCEP; 28 22 propose quantitative aggregate numerical score to describe overall clean energy transition reflected TCEP we compute it 2.23/4 (or 55.7%). Finally, present selected historical records (based data) about satisfactory for transition.

Language: Английский

---

Strategic restoration-development mitigates tradeoffs between hydropower and fish habitat fragmentation in the Mekong

One Earth, Journal Year: 2024, Volume and Issue: 7(6), P. 1096 - 1107

Published: June 1, 2024

Hydropower can play an important role in decarbonizing energy systems, but opportunities for future low-impact hydropower are limited by existing dams, which driving declines freshwater fish worldwide. How to mitigate past development impacts while enabling expansion remains unclear. Here, we propose a strategic restoration-development paradigm break unfavorable lock-ins from development. For the Lower Mekong River, demonstrate how multi-objective optimization and habitat fragmentation modeling 710 species be used design policies. Our results show that combination of removing high-impact fishways retrofitting, planning locked-in environmental restore connectivity level achievable had been adopted before onset deployment. This highlights essential restoration with sustainable

Language: Английский

---

Water Dams: From Ancient to Present Times and into the Future

Water, Journal Year: 2024, Volume and Issue: 16(13), P. 1889 - 1889

Published: July 1, 2024

Since ancient times, dams have been built to store water, control rivers, and irrigate agricultural land meet human needs. By the end of 19th century, hydroelectric power stations arose extended purposes dams. Today, can be seen as part renewable energy supply infrastructure. The word dam comes from French is defined in dictionaries using words like strange, dike, obstacle. In other words, a structure that stores water directs it desired location, with being front river valleys. Dams on rivers serve various such drinking irrigation, flood control, industrial generation, recreation, movement solids, fisheries. also catchment area capture rainwater arid semi-arid areas. concrete or natural materials earth rock. There are types dams: embankment (earth-fill dams, rock-fill faces) rigid (gravity rolled compacted arch buttress dams). A gravity straight wall stone masonry earthen material withstand full force pressure. pressure transfers vertical compressive forces horizontal shear foundations beneath dam. strength ultimately depends its weight foundations. Most times were constructed An dam, hand, has convex curved surface faces water. generated by transferred sides lines. horizontal, normal, resist at edges. When viewed section, an shape. This type due particular shape allows transfer stored rock article takes detailed look hydraulic engineering over millennia. Lessons should learned successful unsuccessful applications operations Water resource managers, policymakers, stakeholders use these lessons achieve sustainable development goals climate change crisis.

Language: Английский

---

An Integrated Model of Water-Sediment-Energy Simulation and its Application in the Xiaolangdi Reservoir

Published: Jan. 1, 2025

The Xiaolangdi (XLD) Reservoir stands as a pivotal reservoir for the water-sediment regulation and power generation in Yellow River Basin. coexistent process of water-sediment-energy during pre-flood period causes competition among multi-objectives: generation, water supply, deposition reduction area downstream channel. To balance trade-off between sustainability utility value, model framework is proposed this study, following route "scheme design-model simulation-scheme evaluation". integrates operation module, hydrodynamic-based simulation benefit evaluation method based on Fuzzy Neural Network (FNN). Firstly, module was validated against 2013 2014 events, showing good agreement with field measurements. Subsequently, by altering two key scheduling parameters CWL (connecting level) RWL (refilled event, different schemes were evaluated comprehensive performance VS (vented sediment amount from reservoir), TV (total volume discharge greater than 2600 m3/s), PG (power amount), SC (final storage capacity) trained FNN. optimal values 217 m 211 m, relative membership degrees 0.750 0.754, respectively. This finding suggests that maintaining persistently low pool level XLD securing higher benefits case insufficient inflow, effect being notable advantage.

Language: Английский

---

Renewable Energy in the Western Balkans and EU Policy: Pathway to Regional Net-Zero

IOP Conference Series Earth and Environmental Science, Journal Year: 2025, Volume and Issue: 1442(1), P. 012002 - 012002

Published: Jan. 1, 2025

Abstract The six Western Balkan countries (WB6), which include Albania, Bosnia and Herzegovina, Kosovo, Montenegro, North Macedonia, Serbia, are in a critical phase of their development face various economic, political environmental challenges. Political uncertainties, economic imbalances, institutional weaknesses have hindered progress achieving sustainable goals. Among these challenges, the energy sector stands out as priority due to its significant impact on growth, climate change, sustainability. landscape region is dominated by conventional non-renewable sources, leading concerns about security degradation. Dependence fossil fuels exposes volatile prices increases contribution greenhouse gas emissions. There an urgent need develop cleaner sources promote growth while mitigating harmful effects change. Hydropower capacity WB6 estimated be offers opportunity generate clean energy. A comprehensive overview hydropower potential considers factors such river systems, water availability, topography, technical capabilities. promotion renewable energy, especially hydropower, central future countries. By harnessing addressing social concerns, can boost combat improve for prosperous future.

Language: Английский

---

Unleashing the Power of Climate Mitigation: Building a Sustainable Energy Future Through Renewable Energy, Efficiency, and Innovation

Advances in geographical and environmental sciences, Journal Year: 2025, Volume and Issue: unknown, P. 299 - 319

Published: Jan. 1, 2025

Language: Английский

---

Improved hydropower simulation for China based on a newly developed hydropower database

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 133022 - 133022

Published: March 1, 2025

Language: Английский

---

Sustained power generation from concentration gradients in a solid matrix

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This study explores sustained power from concentration gradients in a solid matrix. It proposes using waste heat to maintain energy and cost-effective water–soil-SCGPGs compensate for the limitation of gradient energy.

Language: Английский

---

Assessment of Hydropower Potential in the Upper Indus Basin: A Geographic Information System-Based Multi-Criteria Decision Analysis for Sustainable Water Resources in Pakistan

Resources, Journal Year: 2025, Volume and Issue: 14(3), P. 49 - 49

Published: March 17, 2025

The development of hydropower projects is crucial to addressing Pakistan’s ongoing energy and financial crises. Despite the country’s abundant resources, particularly in northern regions, these have not been adequately explored, while consumption supply issues persisted for past two decades. Focusing on Sustainable Development Goal (SDG-7): “Ensure access affordable, reliable, sustainable, modern energy”, this study aimed assess potential at suitable sites Upper Indus Basin (Pakistan) by integrating Geographic Information Systems (GIS) Multi-Criteria Decision Analysis (MCDM). This only focused estimating but also considered environmental constraints all using multi-criteria decision-making (MCDM) tool, which used location constraint criteria, along with benefit cost criteria. methodology combines technical evaluations (head discharge) prioritize sustainable development. Key findings identify 17, 15, 16, 5, 6 as most promising locations, balancing generation minimal impact. provides a replicable framework policymakers harness resources responsibly, contributing security aligning global Goals. approach bridges gap between feasibility sustainability offers model other regions facing similar challenges.

Language: Английский

---