Rapid groundwater decline and some cases of recovery in aquifers globally

Nature, Journal Year: 2024, Volume and Issue: 625(7996), P. 715 - 721

Published: Jan. 24, 2024

Abstract Groundwater resources are vital to ecosystems and livelihoods. Excessive groundwater withdrawals can cause levels decline 1–10 , resulting in seawater intrusion 11 land subsidence 12,13 streamflow depletion 14–16 wells running dry 17 . However, the global pace prevalence of local declines poorly constrained, because situ have not been synthesized at scale. Here we analyse groundwater-level trends for 170,000 monitoring 1,693 aquifer systems countries that encompass approximately 75% 18 We show rapid (>0.5 m year −1 ) widespread twenty-first century, especially regions with extensive croplands. Critically, also accelerated over past four decades 30% world’s regional aquifers. This acceleration deepening highlights an urgent need more effective measures address depletion. Our analysis reveals specific cases which reversed following policy changes, managed recharge surface-water diversions, demonstrating potential depleted recover.

Language: Английский

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The changing nature of groundwater in the global water cycle

Science, Journal Year: 2024, Volume and Issue: 383(6686)

Published: Feb. 29, 2024

In recent decades, climate change and other anthropogenic activities have substantially affected groundwater systems worldwide. These impacts include changes in recharge, discharge, flow, storage, distribution. Climate-induced shifts are evident altered recharge rates, greater contribution to streamflow glacierized catchments, enhanced flow permafrost areas. Direct withdrawal injection, regional regime modification, water table storage alterations, redistribution of embedded foods globally. Notably, extraction contributes sea level rise, increasing the risk inundation coastal The role global cycle is becoming more dynamic complex. Quantifying these essential ensure sustainable supply fresh resources for people ecosystems.

Language: Английский

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Device design and optimization of sorption-based atmospheric water harvesters

Device, Journal Year: 2023, Volume and Issue: 1(4), P. 100099 - 100099

Published: Oct. 1, 2023

Atmospheric water harvesting (AWH) is a promising approach to providing fresh areas without access large bodies of freshwater and mitigating imbalanced distribution. Besides material innovations, researchers have explored different design strategies for these AWH devices, which can be divided into monocyclic multicyclic types. Monocyclic harvesters further categorized those using upward vapor escape, research efforts focused on reducing top cover heating increasing sorption capacity, downward heat recycling cooling enhance condensation efficiency. Notably, some devices utilize radiative require zero external energy input. For harvesters, optimizing the sorbents' uptake kinetics device geometry guarantee continuous harvesting.

Language: Английский

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Arsenic and other geogenic contaminants in global groundwater

Nature Reviews Earth & Environment, Journal Year: 2024, Volume and Issue: 5(4), P. 312 - 328

Published: March 12, 2024

Language: Английский

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Biomimetic surface engineering for sustainable water harvesting systems

Nature Water, Journal Year: 2023, Volume and Issue: 1(7), P. 587 - 601

Published: July 20, 2023

Language: Английский

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Hydrogels as promising platforms for solar-driven water evaporators

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 479, P. 147519 - 147519

Published: Nov. 19, 2023

Language: Английский

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Complex Policy Mixes are Needed to Cope with Agricultural Water Demands Under Climate Change

Water Resources Management, Journal Year: 2023, Volume and Issue: 37(6-7), P. 2805 - 2834

Published: March 4, 2023

Abstract The divergence between agricultural water use and the annual supply of resources (water gap) has been increasing for decades. forecast is that this gap will continue to widen, compromising security a large share global population. On one hand, increase in demand attributed an ever-growing population that, addition, adopting high-water consumption per capita lifestyle (e.g., meat-rich diet, increased biofuels irrigated agriculture). other climate change aridification spatio-temporal heterogeneity precipitation worldwide. particularly acute drylands, where development food based on massive exploitation resources, groundwater. Here we analyze mechanisms underlying gap, which mainly driven by agriculture, suggest suitable solutions can help close it. Using causal diagrams, show how generates different demands create prevailing supply-side cannot close. Indeed, it widening over years because grown exponentially. This behaviour explained series necessary understand realize complexity scarcity problems. For solving propose exemplify eight lines action be combined tailored each territory. Our analyses corroborate urgent need plan integral management avoid widespread scenarios under future climatic conditions.

Language: Английский

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Arch-Bridge Photothermal Fabric with Efficient Warp-Direction Water Paths for Continuous Solar Desalination

Advanced Fiber Materials, Journal Year: 2024, Volume and Issue: 6(4), P. 1026 - 1036

Published: April 9, 2024

Language: Английский

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Conceptualizing future groundwater models through a ternary framework of multisource data, human expertise, and machine intelligence

Water Research, Journal Year: 2024, Volume and Issue: 257, P. 121679 - 121679

Published: April 26, 2024

Language: Английский

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Utilizing Deep Learning and the Internet of Things to Monitor the Health of Aquatic Ecosystems to Conserve Biodiversity

Natural and Engineering Sciences, Journal Year: 2024, Volume and Issue: 9(1), P. 72 - 83

Published: May 30, 2024

The decline in water conditions contributes to the crisis clean biodiversity. interactions between indicators and correlations among these variables taxonomic groupings are intricate their impact on However, since there just a few kinds of Internet Things (IoT) that accessible purchase, many chemical biological measurements still need laboratory studies. newest progress Deep Learning IoT allows for use this method real-time surveillance quality, therefore contributing preserving This paper presents thorough examination scientific literature about quality factors have significant influence variety freshwater ecosystems. It selected ten most crucial criteria. connections quantifiable valuable aspects assessed using Generalized Regression-based Neural Networks (G-RNN) framework multi-variational polynomial regression framework. These models depend historical data from monitoring quality. projected findings an urbanized river were validated combination traditional field testing, in-lab studies, created IoT-depend condition management system. G-RNN effectively differentiates abnormal increases typical scenarios. assessment coefficients system degree 8 as follows: 0.87, 0.73, 0.89, 0.79 N-O3-N, BO-D5, P-O4, N-H3-N. suggested methods prototypes verified against assess efficacy effectiveness. general was deemed suitable, with forecasting mistakes smaller than 0.3 mg/L. validation offers insights into methods' usage pollutants released observation additional regulating usage, specifically biodiversity preservation.

Language: Английский

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