Hydrologic Impacts of Thawing Permafrost—A Review

Vadose Zone Journal, Journal Year: 2016, Volume and Issue: 15(6), P. 1 - 20

Published: June 1, 2016

Core Ideas This review synthesizes the state of science in permafrost hydrology. Observed and projected hydrologic impacts thaw are discussed. Characterization, modeling, knowledge gaps systems identified. Translating results between multiple scales cold regions presents a challenge. Opportunities for advancement field hydrology described. Where present, exerts primary control on water fluxes, flowpaths, distribution. Climate warming related drivers soil thermal change expected to modify distribution permafrost, leading changing conditions, including alterations moisture, connectivity inland waters, streamflow seasonality, partitioning stored above below ground. The is undergoing rapid with respect multiscale observations, subsurface characterization, integration other disciplines. However, gaining predictive capability many interrelated consequences climate persistent challenge due several factors. Observations have been causally linked thaw, but applications process‐based models needed support enhance transferability empirical linkages often restricted generalized representations. Limitations stem from inadequate baseline unfrozen hydrogeologic lack historical data, simplifications structure process representation counter high computational demands cryohydrogeologic simulations. Further, part large degree heterogeneity landscapes nonuniformity patterns rates, associations various modes not readily scalable; even trajectories can differ. highlights promising advances characterization modeling ongoing research challenges toward projecting ecologic at time spatial that useful managers researchers.

Language: Английский

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Groundwater system and climate change: Present status and future considerations

Journal of Hydrology, Journal Year: 2020, Volume and Issue: 589, P. 125163 - 125163

Published: June 12, 2020

Language: Английский

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Frozen soil degradation and its effects on surface hydrology in the northern Tibetan Plateau

Journal of Geophysical Research Atmospheres, Journal Year: 2015, Volume and Issue: 120(16), P. 8276 - 8298

Published: Aug. 1, 2015

Abstract Frozen soil was simulated at six seasonally frozen and seven permafrost stations over the northern Tibetan Plateau using Variable Infiltration Capacity (VIC) model for period of 1962–2009. The VIC resolved seasonal cycle temporal evolution observed temperatures liquid moisture well. long‐term changes during 1962–2009 indicated mostly positive trends both temperature moisture, negative ice content annual monthly time scales, although differences existed among stations, layers, seasons. Increases in were due mainly to increases daily air maxima internal heat conduction, while decreases related warming soil. For cold months can be attributed enhanced melt warm results competition between precipitation effects. Precipitation strongly correlated with evapotranspiration runoff but had various degrees correlations base flow May–September. Seasonally displayed longer more active hydrological processes than stations. Slight enhancement surface study indicated, combined effects changes, which dominant, degradation.

Language: Английский

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Integrated surface/subsurface permafrost thermal hydrology: Model formulation and proof‐of‐concept simulations

Water Resources Research, Journal Year: 2016, Volume and Issue: 52(8), P. 6062 - 6077

Published: July 15, 2016

Abstract The need to understand potential climate impacts and feedbacks in Arctic regions has prompted recent interest modeling of permafrost dynamics a warming climate. A new fine‐scale integrated surface/subsurface thermal hydrology capability is described demonstrated proof‐of‐concept simulations. combines surface energy balance model with recently developed three‐dimensional subsurface models for nonisothermal water flows snow distribution the microtopography. Surface are modeled using diffusion wave equation extended include transport phase change ponded water. Variation depth microtopography, physically result wind scour, phenomenologically equation. multiple processes implemented by leveraging highly parallel community software. Fully simulations on tilted open book catchment, an important test case flow modeling, presented. Fine‐scale 100 year projections hydrological system ice wedge polygon at Barrow Alaska also These demonstrate feasibility microtopography‐resolving, process‐rich as tool help possible future evolution carbon‐rich tundra

Language: Английский

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Impact of climate change on groundwater hydrology: a comprehensive review and current status of the Indian hydrogeology

Applied Water Science, Journal Year: 2022, Volume and Issue: 12(6)

Published: April 15, 2022

Abstract Groundwater is the second largest store of freshwater in world. The sustainability ecosystem largely dependent on groundwater availability, and has already been under tremendous pressure to fulfill human needs owing anthropogenic activities around various parts footprints can be witnessed terms looming climate change, water pollution, changes available resources. This paper provides a comprehensive view linkage between groundwater, system, activities, with focus Indian region. significant prior works addressing groundwater-induced response climatic system impacts through natural human-instigated processes are reviewed. condition quality India respect physicochemical, heavy metal biological contamination discussed. utility remote sensing GIS groundwater-related studies discussed, focusing Gravity Recovery Climate Experiment (GRACE) applications over GRACE-based estimates terrestrial storage have instrumental numerous recent times. Based literature review, sustainable practices adopted for optimum utilization different purposes possible groundwater-based adaptation strategies change also enunciated.

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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Permafrost Degradation and Its Hydrogeological Impacts

Water, Journal Year: 2022, Volume and Issue: 14(3), P. 372 - 372

Published: Jan. 26, 2022

Under a warming climate, permafrost degradation has resulted in profound hydrogeological consequences. Here, we mainly review 240 recent relevant papers. Permafrost boosted groundwater storage and discharge to surface runoffs through improving hydraulic connectivity reactivation of flow systems, resulting reduced summer peaks, delayed autumn flattened annual hydrographs, deepening elongating paths. As result degradation, lowlands underlain by more continuous, colder, thicker are getting wetter uplands mountain slopes, drier. However, additional contribution melting ground ice stream-flows seems limited most basins. the table supra-permafrost water lowering; subaerial taliks forming; connecting expanding; thermokarst activities intensifying. These processes may profoundly impact on ecosystem structures functions, terrestrial processes, subsurface coupled engineered infrastructures, socioeconomic development. During last 20 years, substantial rapid progress been made many aspects cryo-hydrogeology. these studies still inadequate desired spatiotemporal resolutions, multi-source data assimilation integration, as well cryo-hydrogeological modeling, particularly over rugged terrains ice-rich, warm (>−1 °C) zones. Future research should be prioritized following aspects. First, better understand concordant changes mechanisms, trends for hydrometeorology, geocryology, hydrogeology, ecohydrology thin regions. Second, aim towards revealing physical chemical mechanisms heat transfer moisture migration vadose zone expanding taliks, coupling hydrothermal dynamics supra-, intra- sub-permafrost waters, that water-resource hydrochemical biogeochemical movements solutes pollutants waters induced thawing permafrost. Third, urgently need establish improve predictive distributed cryo-hydrogeology models with optimized parameterization. In addition, also emphasize automatically, intelligently, systematically monitoring, predicting, evaluating, adapting impacts from degrading at scales. Systematic, in-depth, abilities can greatly advance cryo-hydrogeology, cryo-ecohydrology help manage water, ecosystems, land resources regions an adaptive sustainable manner.

Language: Английский

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The impacts of climate change on groundwater quality: A review

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 912, P. 169241 - 169241

Published: Dec. 9, 2023

Language: Английский

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A primer on stream temperature processes

Wiley Interdisciplinary Reviews Water, Journal Year: 2023, Volume and Issue: 10(4)

Published: Feb. 28, 2023

Abstract Stream temperature is one of the most critical factors controlling aquatic ecosystem health. Practitioners and researchers from a range fields, including biology, ecology, hydrology, engineering, watershed management, are concerned with how climate environmental changes impacting stream thermal regimes. This primer provides an introduction to various energy water exchange processes that underpin patterns small headwater streams large river systems. An overview exchanges provided, (1) advection associated hydrologic processes, at (2) stream–atmosphere interface (3) stream–bed interface. The interaction spatiotemporal variability these discussed using balance framework. A sound physical understanding appreciation complex controls governing regimes will help inform effective management strategies sustain healthy ecosystems in changing world. article categorized under: Science Water > Hydrological Processes Quality Life Nature Freshwater Ecosystems

Language: Английский

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Rising water temperature in rivers: Ecological impacts and future resilience

Wiley Interdisciplinary Reviews Water, Journal Year: 2024, Volume and Issue: 11(4)

Published: March 5, 2024

Abstract Rising water temperatures in rivers due to climate change are already having observable impacts on river ecosystems. Warming has both direct and indirect aquatic life, further aggravates pervasive issues such as eutrophication, pollution, the spread of disease. Animals can survive higher through physiological and/or genetic acclimation, behavioral phenological change, range shifts more suitable locations. As such, those animals that adapted cool‐water regions typically found high altitudes latitudes where there fewer dispersal opportunities most at risk future extinction. However, sub‐lethal animal physiology phenology, body‐size, trophic interactions could have significant population‐level effects elsewhere. Rivers vulnerable warming because historic management left them exposed solar radiation removal riparian shade, hydrologically disconnected longitudinally, laterally, vertically. The resilience riverine ecosystems is also limited by anthropogenic simplification habitats, with implications for resource use resident organisms. Due complex ecosystems, species‐specific response organisms warming, predicting how will challenging. Restoring provide connectivity heterogeneity conditions would a expected co‐occurring pressures, including should be considered priority part global strategies adaptation mitigation. This article categorized under: Science Water > Environmental Change Life Nature Freshwater Ecosystems Stresses Pressures

Language: Английский

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