Hydroclimatic variability and trends suggest improvements in water resource management in the cascade reservoirs of the Tocantins River DOI Creative Commons
Idelina Gomes da Silva, José Luiz Cabral da Silva Júnior, Bárbara Dunck

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 23, 2024

Abstract Research on hydroclimatic variations explains the relationships between water masses and global climate factors. Climate change causes changes in river flow regimes impacts ecosystems, economy, society. In this study, we characterized hydroclimatology of seven reservoirs Tocantins River, along 1,500 km during more than 12 years sampling, where analyzed climatic variables such as precipitation, solar radiation, net evaporation, air temperature, addition to hydrological discharge evaporation reservoirs. We identified that recovered slowly after dry period these discharges decreased at a rate 575 m3/s 1995 2023, followed by negative significant downward trend. As with discharge, precipitation showed The deficit caused prolonged droughts 2015 2017 resulted lower flows higher temperatures. factors, socioeconomics reservoir areas demand high withdrawals, associated population growth agricultural production. conclude have gradient latitudinal variations. These gradients are mainly due differences flows, but highly dependent temperature conditions, withdrawal. factors important should be discussed order mitigate ecological socioeconomic River basin.

Language: Английский

High Resolution Simulation of Nitrate and Ammonium From Point and Diffuse Sources in a Small Headwater Catchment DOI Creative Commons
Caroline Spill, Matthias Gaßmann

Hydrological Processes, Journal Year: 2025, Volume and Issue: 39(2)

Published: Feb. 1, 2025

ABSTRACT Catchment water quality models are common tools for assessing hydrochemical processes in catchments. They improve the process understanding and help to identify pollutant sources. However, spatial temporal resolution of many is too coarse represent occurring within minutes or hours, making them unsuitable use fast‐responding Examples such cases headwater catchments influenced by urban agglomerations. ZIN‐AgriTra a physically based model that allows simulations with fine (< 1 h) 100 m) resolution. As it also implementation point sources, suitable simulation mixed land use. In this study, we test first time ability nitrogen transport transformation source catchment. High series wastewater treatment plant (WWTP) effluent quantities were available as input model. For combined sewer overflow (CSO) discharges, only discharge times measured. knowledge was still valuable during calibration improved CSO contributions events. Our setup modelling strategy allowed us simulate nitrate ammonium export from catchment sufficiently. Overall, sources have significant impact sensitivity parameters influencing mixing ratio between stream discharge. found large on quantity, not considering would inevitably lead incorrect parameterisation parameters. Models should become more inclusive order be able catchments, especially places, where data availability limited.

Language: Английский

Citations

0
Contrasts in Ecohydrological Partitioning of Heterogeneous Urban Green Spaces in Energy‐Limited Versus Water‐Limited Hydroclimates DOI Creative Commons
Jamie Lee Stevenson,

Doerthe Tetzlaff,

Christian Birkel

et al.

Hydrological Processes, Journal Year: 2025, Volume and Issue: 39(2)

Published: Feb. 1, 2025

ABSTRACT Urban green spaces (UGS) provide essential ecosystem services (ES), for example, precipitation infiltration flood mitigation, transpiration (Tr) local atmosphere cooling and groundwater recharge (Gr) drinking water provision. However, vegetation type impacts the ecohydrological partitioning of incoming therefore ES provision, whilst flux rate potential is different in disparate hydroclimates. Consequently, paired studies hydroclimates are useful to understand similarities differences controlled effectively guide UGS management. We simultaneously undertook sub‐daily soil moisture measurements beneath three contrasting urban types (grass, shrub, mature tree) between 01/01/2021 31/12/2023 an inter‐comparison energy‐limited Scottish a moisture‐limited region Germany. These data were integrated with hydroclimatic sapflux EcoHydroPlot model constrain estimates fluxes. Soil showed clear effects hydroclimates, high low VWC values Scotland Germany, respectively, evapotranspiration was ~50% greater functioning rates fundamentally different, Tr dominant Germany Gr Scotland. cover shown both countries be key control on grass encouraging Gr, evergreen shrubs trees elevating Tr. In hydrological due marked shutting down majority study period. The German site also susceptibility inter‐annual variability all fluxes heavily suppressed during 2022 drought. contrast, provided some buffer against ongoing negative rainfall anomalies. Overall, indicated importance diverse encourage

Language: Английский

Citations

0
Current Status and Future Research of Groundwater Under Climate Change: A Bibliometric Analysis DOI Open Access
Yuan Xue,

Zuirong Niu,

Rui Zhang

et al.

Water, Journal Year: 2024, Volume and Issue: 16(23), P. 3438 - 3438

Published: Nov. 29, 2024

Groundwater research on climate change is one of the significant topics in field natural sciences that receiving increasing attention. However, no bibliometric papers have been published analyzed for relevant knowledge graphs and relational networks. R-Bibliometrix VOSviewer software are used to quantitatively analyze visually represent literature groundwater under from 2010 2024 based Web Science Core Collection. The findings demonstrated a total 4748 articles this topic, with publications yearly. most influential journal was Journal Hydrology, ten were 2013 2017. United States China significantly more than any other country had closest cooperation, while Europe continent publications. Chinese Academy Sciences leading institution terms number publications, Delft University Technology highest average citations. British scholar Chris Soulsby author articles. top three keywords ‘climate change’, ‘groundwater’, ‘model’. Machine-learning methods remote-sensing techniques emerging hotspots guided future directions.

Language: Английский

Citations

1
Hydroclimatic variability and trends suggest improvements in water resource management in the cascade reservoirs of the Tocantins River DOI Creative Commons
Idelina Gomes da Silva, José Luiz Cabral da Silva Júnior, Bárbara Dunck

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 23, 2024

Abstract Research on hydroclimatic variations explains the relationships between water masses and global climate factors. Climate change causes changes in river flow regimes impacts ecosystems, economy, society. In this study, we characterized hydroclimatology of seven reservoirs Tocantins River, along 1,500 km during more than 12 years sampling, where analyzed climatic variables such as precipitation, solar radiation, net evaporation, air temperature, addition to hydrological discharge evaporation reservoirs. We identified that recovered slowly after dry period these discharges decreased at a rate 575 m3/s 1995 2023, followed by negative significant downward trend. As with discharge, precipitation showed The deficit caused prolonged droughts 2015 2017 resulted lower flows higher temperatures. factors, socioeconomics reservoir areas demand high withdrawals, associated population growth agricultural production. conclude have gradient latitudinal variations. These gradients are mainly due differences flows, but highly dependent temperature conditions, withdrawal. factors important should be discussed order mitigate ecological socioeconomic River basin.

Language: Английский

Citations

0