Three-dimensional pore-scale study of methane hydrate dissociation mechanisms based on micro-CT images

Deleted Journal, Journal Year: 2024, Volume and Issue: 1(1), P. 100015 - 100015

Published: Jan. 1, 2024

<p>Methane hydrate is a promising source of alternative energy. An in-depth understanding the dissociation mechanism crucial for efficient extraction. In present work, comprehensive set pore-scale numerical studies mechanisms presented. Pore-scale lattice Boltzmann (LB) models are proposed to simulate multiphysics process during methane dissociation. The simulations employ actual sediment pore structure obtained by micro-CT imaging. Experimental results xenon compared with simulations, indicating that observed habits evolution accurately captured LB models. Furthermore, under different water saturations, fluid flow rates and thermal conditions conducted. Heat mass transfer limitations both have significant effects on rate. bubble movement can further influence process. Dissociation patterns be divided into three categories, uniform, non-uniform wormholing. impacts differently in three-dimensional real structures two-dimensional idealized ones, influenced variations properties. Finally, upscaling investigations conducted provide permeability kinetic representative elementary volume (REV)-scale production forecast. Due difference mechanisms, contrast prior findings from studies. work provides paradigm simulation dissociation, which offer theoretical guidance extraction.</p>

Language: Английский

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Known and Unknown Environmental Impacts Related to Climate Changes in Pakistan: An Under-Recognized Risk to Local Communities

Sustainability, Journal Year: 2024, Volume and Issue: 16(14), P. 6108 - 6108

Published: July 17, 2024

This study prioritized initiatives within the China–Pakistan Economic Corridor (CPEC), foreign funding, and associated environmental national issues. Additionally, it analyzed these factors’ effects on improving infrastructure, commerce, economic cooperation between China Pakistan. Besides that, also studies current climatic, economic, political challenges, mainly focused water agriculture Climate, issues affect environment. These concerns deserve global attention. Pakistan relies agriculture, its scarcity predisposes to losses, urbanization, many socioeconomic problems. Climate change flood have devastated sector. Water affects too significantly impacts economy food resources. The nation has not previously experienced such a profoundly distressing epoch. faced several environmental, challenges; specifically, fields of present notable apprehensions. Unfavorable climatic conditions impede attainment sustainable in Considering strong reliance resources, is crucial acknowledge that industrialization resulted substantial contamination due presence microplastics heavy metals. Moreover, South Asian region experiences significant CPEC solution for financial issues, but big challenge degradation stage, especially since funding key increasing corruption bringing more burden economy. Unfortunately, good To ensure safety, security, sustainability, projects should follow regulations. provides new list initiative priority tasks openly disrupt initiative, serve whole project, give appropriate recommendations future research policy-making.

Language: Английский

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Robust changes in global subtropical circulation under greenhouse warming

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Jan. 2, 2024

The lower tropospheric subtropical circulation (SC) is characterized by monsoons and highs, playing an important role in global teleconnections climate variability. SC changes a warmer are influenced complex region-specific mechanisms, resulting uneven projections worldwide. Here, we present method to quantify the overall intensity change SC, revealing robust weakening across CMIP6 models. primarily caused global-mean surface warming, partly counteracted direct CO

Language: Английский

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An Annual Temperature Cycle Feature Constrained Method for Generating MODIS Daytime All-Weather Land Surface Temperature

IEEE Transactions on Geoscience and Remote Sensing, Journal Year: 2024, Volume and Issue: 62, P. 1 - 14

Published: Jan. 1, 2024

In the face of rapid global climate change and increasing occurrence extreme weather events, acquiring seamless land surface temperature (LST) with high spatial temporal resolution on a scale has become increasingly crucial. However, limited ability Thermal Infrared (TIR) Remote Sensing to penetrate cloud cover hindered widespread application TIR LST datasets. To address this limitation, we propose novel reconstruction approach for cloud-covered pixels, which is established based annual cycle. It shifted previous from directly modelling indirectly residual term derived observations cycle (ATC) model fitted values. A random forest regression was used build estimation applied pixels derive their LSTs. Taking Iberia Peninsula as study area, proposed method generate all-weather product whole year 2021. The visual assessment demonstrates its robust performance across different seasons conditions. Additionally, through validation masked clear-sky observations, it reveals that achieves stable accuracy, average value coefficient determination (R ² ) Root Mean Squared Error (RMSE) above 0.8 1.08 K under climatic comparison, ERA-5 reanalysis data also indicates relatively good consistency between reconstructed LST, although slight decline in R RMSE. indirect near air (NSAT) shows comparable NSAT an increase RMSE no more than 0.95 K. general, potentials reconstructing LSTs conditions can be generating product.

Language: Английский

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Innovations in science, technology, engineering, and policy (iSTEP) for addressing environmental issues towards sustainable development

The Innovation Geoscience, Journal Year: 2024, Volume and Issue: 2(3), P. 100087 - 100087

Published: Jan. 1, 2024

<sec></sec><sec><p> Sustainable development depends on the integration of economy, society, and environment. Yet, escalating environmental challenges pose threats to both society economy. Despite progress in addressing issues promote sustainability, knowledge gaps scientific research, technological advancement, engineering practice, policy persist. In this review, we aim narrow these by proposing innovation-based solutions refining existing paradigms. Reviewing past research actions, first elucidate evolution sustainability science essence sustainable its assessment. Secondly, summarize current major issues, including global warming climate change, biodiversity loss, land degradation desertification, pollution, as well their relationships with achievement Development Goals (SDGs). Subsequently, review critically evaluates role innovations science, technology, engineering, (iSTEP) synergies advancing SDGs. While sequential may vary based specific contexts or scenarios within iSTEP framework, each component reinforces others, fostering continuous improvement. Finally, offers recommendations future perspectives for formulating roadmaps. Recommendations include a vision promoting interdisciplinary collaboration, encouraging transboundary cooperation among stakeholders endeavors.</p></sec>

Language: Английский

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Water constraints enhanced by revegetation while alleviated by increased precipitation on China’s water-dominated Loess Plateau

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 640, P. 131731 - 131731

Published: July 31, 2024

Language: Английский

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Enhanced silicate weathering accelerates forest carbon sequestration by stimulating the soil mineral carbon pump

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(8)

Published: Aug. 1, 2024

Abstract Enhanced silicate rock weathering (ERW) is an emerging strategy for carbon dioxide removal (CDR) from the atmosphere to mitigate anthropogenic climate change. ERW aims at promoting soil inorganic sequestration by accelerating geochemical processes. Theoretically, may also impact organic (SOC), largest pool in terrestrial ecosystems, but experimental evidence this largely lacking. Here, we conducted a 2‐year field experiment tropical rubber plantations southeast of China evaluate effects wollastonite powder additions (0, 0.25, and 0.5 kg m −2 ) on both 0–10 cm depth. We found that significantly increased concentration SOC HCO 3 − , increases were four eight times higher than with low‐ high‐level applications. had positive accrual mineral‐associated matter (MAOM) macroaggregate fractions, not particulate matter. Path analysis suggested MAOM mainly increasing release Ca, Si, Fe, lesser extent stimulating root growth microbial‐derived inputs. Our study indicates can promote stable MOAM surface soils through mineral pump microbial pump. These have been larger CDR during our experiment. argue it essential account responses assessments ERW.

Language: Английский

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Atmospheric nitrogen deposition has minor impacts on the abundance and diversity of arbuscular mycorrhizal fungi and their contribution to soil carbon stock in tropical forests

Soil Biology and Biochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 109746 - 109746

Published: Feb. 1, 2025

Language: Английский

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The role of toxicology in climate change: Understanding the risks of novel environmental toxins

Sustainable Environment, Journal Year: 2025, Volume and Issue: 11(1)

Published: Feb. 13, 2025

Language: Английский

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Extreme weather events and environmental contamination under climate change: A comparative review of ten European coastal cities

Current Opinion in Environmental Science & Health, Journal Year: 2025, Volume and Issue: unknown, P. 100606 - 100606

Published: Feb. 1, 2025

Language: Английский

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