James Buttle Review: The Characteristics of Baseflow Resilience Across Diverse Ecohydrological Terrains

Hydrological Processes, Journal Year: 2025, Volume and Issue: 39(3)

Published: March 1, 2025

ABSTRACT The dynamic storage of aquifers is the portion groundwater that can potentially drain to any given point along a stream create baseflow. Baseflow typically occurs year‐round in perennial streams, though characteristics and stability are often most important instream processes during extended dry periods (without precipitation snowmelt) when runoff quickflows minimised. term ‘baseflow resilience’ defined for this review as tendency baseflow streams maintain consistent volume water quality year while under stress from climate variability extremes, with anthropogenic stressors such withdrawals, land use change, degradation. ‘Baseflow has, part, user‐defined meaning spanning supply variables primary interest. Watershed directly impact resilience produce non‐intuitive feedbacks enhance some attributes simultaneously impairing others. For example, permeable corridor geology creates strong stream‐groundwater hydrologic connectivity, yet fast drainage via preferential high‐permeability flowpaths lead streamflow not being sustained periods. Also, shallow sources generally more immediately vulnerable extreme events, warming, salinization, transpiration, drought, compared deeper groundwater. Yet drought influenced by lag years, contaminant legacies may propagate through deep receiving waters decades centuries. Finally, irrigation withdrawals intercept would have drained application leach contaminants soil zone unnaturally raising tables, return flows sustain groundwater‐dependent habitats semiarid areas. This covers concept context summarises common hydrogeological controls on, multiscale of, storage. Further, we present several quantitative metrics assess range using both broadly available boutique data types, subset which demonstrated Delaware River Basin, USA.

Language: Английский

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Drivers and trends of streamflow droughts in natural and human-impacted basins across the contiguous United States

Journal of Hydrology, Journal Year: 2025, Volume and Issue: 655, P. 132908 - 132908

Published: Feb. 21, 2025

Language: Английский

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Seasonality and Albedo Dependence of Cloud Radiative Forcing in the Upper Colorado River Basin

Journal of Geophysical Research Atmospheres, Journal Year: 2025, Volume and Issue: 130(6)

Published: March 25, 2025

Abstract Mountains create and enhance their own clouds, which both scatter absorb shortwave radiation from the sun re‐emit land surface atmospheric longwave radiation. However, impacts of clouds on balance in high elevation snowy mountain terrain are poorly explored. In this study, we use data collected by SAIL field campaign partner organizations upper elevations (2,880 m.a.s.l) Upper Colorado River Basin (UCRB) over a 21‐month period September 2021 to June 2023 estimate Cloud Radiative Forcing (CRF) shortwave, longwave, net effect. Longwave warming effects dominate during winter when snow albedos (0.8–0.9) background precipitable water vapor is low (0.5 cm), yielding maximum monthly average CRF +34.7 W·m −2 , meaning that increase relative clear skies time period. The sign switches warm season as recedes, sun‐angles increase, North American monsoon arrives, minimum −47.6 with hourly minima −600 . typically positive, even at solar noon, covered, except for brief melting, low‐albedo (0.5–0.6) impacted dust impurities. Sensitivity tests elucidate role albedo CRF. results suggest will magnitude lead more persistent cooling effect budget cover declines.

Language: Английский

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Groundwater dominates snowmelt runoff and controls streamflow efficiency in the western United States

Communications Earth & Environment, Journal Year: 2025, Volume and Issue: 6(1)

Published: May 3, 2025

Language: Английский

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