A novel perspective on near-surface soil freeze states: Discontinuity of the freeze process

Geoderma, Journal Year: 2025, Volume and Issue: 456, P. 117258 - 117258

Published: March 17, 2025

Language: Английский

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Reduced zero-curtain duration in freezing periods in the Headwater Area of the Yellow River, 2011‒2024

Advances in Climate Change Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

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Flashover-Inspired Electro-Assisted Crystallization for Controllable Freeze Desalination

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Freeze desalination (FD) offers a promising solution for desalining industrial saline wastewater in cold regions. However, salt entrapment the close-dendritic ice pore network is uncontrollable, which makes ice-salt separation challenge. To address this issue, study reported electro-assisted crystallization (EAC) to realize controllable FD, inspired by purification during insulator flashover frequently observed power transmission systems. The experiment performed at -20 °C demonstrated that EAC allowed with an open network, whose open-area percentage was increased from 25 41% as current density raised 10 30 mA cm-2. could achieve 89.3% efficiency 35 g L-1 saltwater cm-2, value being four times obtained direct FD. Based on principle of physical field synergy, spontaneous release and FD were likely results electro-heat synergy between Joule heating dipole polarization effects. This not only provides novel pathway phenomenon but also suggests potential technology treatment water or

Language: Английский

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Observed Changes in Seasonal Surface Soil Freeze‒Thaw Cycles in China and Subregions From 1981 to 2017 and Their Relationships With Meteorological Elements

Journal of Geophysical Research Atmospheres, Journal Year: 2025, Volume and Issue: 130(7)

Published: April 5, 2025

Abstract Given the considerable influence of surface soil freeze‒thaw cycles on energy balance, hydrological processes, and ecosystems, there is significant interest in exploring changes context climate warming. In this study, we investigated duration seasonal across China subregions divided by ecosystem types (temperate warm‒temperate deserts northwestern China, temperate grasslands Inner Mongolia, humid subhumid zones northeastern North high‒elevation cold Tibetan Plateau) from 1981 to 2017 examined their relationships with meteorological elements using both homogenized weather station data gridded observations. The results showed that freeze start date has been delayed 8.6 days end advanced days, resulting a shortened 17.2 China. This change was most pronounced Plateau, 25.2 weakest present Nationwide, decreasing trend first increased but then decreased increasing elevation, it consistently latitude. Changes are significantly correlated following factors: air temperature spring, autumn winter, snow depth winter; vegetation autumn. Distinct regional differences exist these relationships. These provide new understanding cycle causes

Language: Английский

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Assessment of Soil Wind Erosion and Population Exposure Risk in Central Asia’s Terminal Lake Basins

Water, Journal Year: 2024, Volume and Issue: 16(13), P. 1911 - 1911

Published: July 4, 2024

In the face of climate change and human activities, Central Asia’s (CA) terminal lake basins (TLBs) are shrinking, leading to deteriorating natural environments serious soil wind erosion (SWE), which threatens regional socio-economic development, health, safety. Limited research on SWE population exposure risk (PER) in these areas prompted this study, applied RWEQ a PER model assess spatiotemporal changes TLBs CA, including Ili River Basin (IRB), Tarim (TRB), Syr Darya (SRB), Amu (ARB), from 2000 2020. We analyzed driving factors used Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) simulate dust event trajectories. The findings 2020 show spatial reduction trend PER, with primary Taklamakan Desert, Aral Sea Basin, Lake Balkhash. Significant was observed along River, near Balkhash, middle lower reaches ARB SRB. Over past 21 years, temporal trends have occurred across basins, decreasing IRB, but increasing TRB, SRB, ARB. Dust movement trajectories indicate that SRB could affect Europe, while TRB impact northern China Japan. Correlations between SWE, NDVI, temperature, precipitation revealed negative correlation suggesting an inhibitory vegetation cover SWE. also varied significantly under different LUCCs, increases cropland, forestland, desert land, decreases grassland wetland. These insights vital for understanding offer theoretical support emergency mitigation arid regions.

Language: Английский

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Low-carbon Treatment and Remediation of Oil Sludge in Mid-to-high Latitude Regions: A Coupled Approach of Freeze-Thaw and Supercritical CO2 Extraction

Environmental Research, Journal Year: 2024, Volume and Issue: 263, P. 120010 - 120010

Published: Sept. 20, 2024

Language: Английский

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