Article
Engineering, Civil
Qianqian Wang, Gang Tang, Shan Jiang, Xuejing Wang, Kai Xiao, Shengchao Yu, Pinghe Cai, Xingxing Kuang, Hailong Li
Summary: This study investigated the contribution of coastal terrestrial groundwater discharge and porewater exchange to dissolved carbon export in a tropical estuary in China. It was found that terrestrial groundwater discharge had a significant impact on DIC export, while porewater exchange played a crucial role in delivering DOC to the ocean. Both pathways contributed a large amount of dissolved carbon export to the coastal water, highlighting the importance of assessing different SGD pathways in understanding terrestrial solute fluxes.
JOURNAL OF HYDROLOGY
(2023)
Article
Engineering, Civil
Haijuan Zhao, Yongjun Jiang, Qiong Xiao, Cheng Zhang, Hamid M. Behzad
Summary: The study reveals a close relationship between the cycling of carbon and nitrogen in karst aquatic systems, with dissolved organic carbon concentrations influenced by the metabolic pathways of subaquatic communities. The metabolic processes of photosynthesis and respiration primarily control the transformation of dissolved inorganic carbon and nitrate, with higher proportions observed in the dry season. The coupled C-N cycling involving DIC and NO3 promotes the production of autochthonous DOC, acting as long-term natural carbon and nitrogen sinks in karst aquatic systems.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
Ceara J. Talbot, Diogo Bolster, David Medvigy, Stuart E. Jones
Summary: This study develops a conceptual framework of lateral carbon transport (LCT), focusing on dissolved organic carbon (DOC) transport, and operationalizes it with a coupled terrestrial-aquatic carbon and hydrology model. The research finds that climate is the strongest driver of LCT-DOC, with precipitation positively related and temperature inversely related to LCT-DOC at continental scales. Plant traits, especially water use efficiency, also interact strongly with climate and have a measurable influence on LCT-DOC.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2022)
Article
Environmental Sciences
Kai Xiao, Peng Zhang, Isaac R. Santos, Jun-Jian Wang, Zhenyang Li, Xuejing Wang, Ying-Hui Wang, Meiqing Lu, Licong Zhang, Hailong Li
Summary: Dissolved organic matter (DOM) in highly productive intertidal mangroves plays a significant role as a carbon and nutrient source in the coastal ocean. The influence of groundwater flow on DOM properties and fluxes remains poorly understood. This study highlights the importance of tidal hydrology in controlling groundwater DOM characteristics.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
Michael A. Rawlins, Craig T. Connolly, James W. Mcclelland
Summary: The study quantifies model-simulated estimates of dissolved organic carbon (DOC) runoff and loadings to western Arctic rivers, capturing a gradient in seasonal DOC concentrations for North Slope Alaska rivers and similar loadings to rivers draining to the north and west. The modeling framework provides insights into carbon export to coastal waters and the impacts of hydrological cycle intensification and permafrost thaw in the Arctic due to ongoing warming. Arctic rivers play a crucial role in transporting freshwater and dissolved organic carbon to the Arctic Ocean, with climate warming influencing the amount of carbon entering river networks from soils.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2021)
Article
Environmental Sciences
Michael A. Rawlins, Craig T. Connolly, James W. McClelland
Summary: The mobilization and transfer of dissolved organic carbon in Arctic watersheds are closely related to the region's climate and water cycle, and may be affected by climate warming. Simulation studies quantify DOC loadings to western Arctic rivers and validate the results with field measurements and other studies. The modeling framework provides insights into carbon export to coastal waters and the potential impacts of climate change in the Arctic.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2021)
Article
Environmental Sciences
Jennifer L. Williamson, Andrew Tye, Dan J. Lapworth, Don Monteith, Richard Sanders, Daniel J. Mayor, Chris Barry, Mike Bowes, Michael Bowes, Annette Burden, Nathan Callaghan, Gareth Farr, Stacey Felgate, Alice Fitch, Stuart Gibb, Pete Gilbert, Geoff Hargreaves, Patrick Keenan, Vassilis Kitidis, Monika Juergens, Adrian Martin, Ian Mounteney, Philip D. Nightingale, M. Gloria Pereira, Justyna Olszewska, Amy Pickard, Andrew P. Rees, Bryan Spears, Mark Stinchcombe, Debbie White, Peter Williams, Fred Worrall, Chris Evans
Summary: This study provides a comprehensive assessment of riverine dissolved organic carbon (DOC) export in Great Britain, revealing that smaller river systems draining peat-rich areas are underestimated in global syntheses. The study also highlights the significant influence of upland conifer plantation forestry on the spatial distribution of DOC exports. These findings have implications for future assessments of CO2 sequestration potential and climate change mitigation strategies.
Article
Ecology
Roger Grau-Andres, David A. Wardle, Marie-Charlotte Nilsson, Paul Kardol
Summary: The study investigated the impacts of reduced precipitation volume and frequency on CO2 exchange, dissolved organic carbon (DOC) export, and moss growth in arctic and boreal ecosystems. Results showed that decreased precipitation led to lower CO2 efflux, DOC export, and moss growth. The study also highlighted the buffering effect of the bryosphere on environmental variation at the forest floor, leading to consistent responses of carbon cycling to external perturbations across highly contrasting ecosystems.
Article
Engineering, Environmental
Jennifer Pensky, Andrew T. Fisher, Galen Gorski, Nicole Schrad, Victor Bautista, Chad Saltikov
Summary: We conducted laboratory column studies to investigate the impacts of infiltration dynamics and the addition of carbon amendments on water quality during flood-managed aquifer recharge (flood-MAR). Our results show that the presence of carbon amendments, such as wood mulch or almond shells, increases nitrate removal compared to native soil. Almond shells promote more efficient nitrate removal but also lead to the mobilization of geogenic trace metals, indicating the importance of considering the carbon source and potential impacts on solute dynamics when designing MAR systems.
Article
Geology
Shahin E. Dashtgard, Ludvig Lowemark, Pei-Ling Wang, Romy A. Setiaji, Romain Vaucher
Summary: In shallow-marine environments in Taiwan, tropical cyclones completely dominate sedimentation, even in the absence of physical evidence of storm deposition. Organic geochemical analysis can distinguish between sediment deposited during tropical cyclones and that redistributed by tides and waves during fair-weather conditions.
Article
Environmental Sciences
Sarah E. Janssen, Michael T. Tate, Brett A. Poulin, David P. Krabbenhoft, John F. DeWild, Jacob M. Ogorek, Matthew S. Varonka, William H. Orem, Jeffrey L. Kline
Summary: Mercury contamination in the Florida Everglades has been a persistent concern. This study examined mercury and methylmercury dynamics in different media and found strong linkages between air, water, and biota in the system. Changes in hydrology and climate were the main drivers of temporal patterns across different matrices. Unlike other regions, there was no evidence of a decline in atmospheric mercury deposition in this region. The study also identified geographic regions susceptible to higher methylmercury bioaccumulation, particularly in the Shark River Slough and Coastal areas. Improved water quality and flow rates, two key targets of the restoration program, are expected to reduce methylmercury production and exposure.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Jean Marcais, Louis A. Derry, Luca Guillaumot, Luc Aquilina, Jean-Raynald de Dreuzy
Summary: The study found that the transit time distributions of streamwater in the watershed display different proportions of old waters, mainly due to groundwater contributions to the stream. Seasonal variations in transit time are influenced by the variable contributions of different flowpaths and the stratification of groundwater residence times. A parsimonious model is developed to capture the groundwater contribution and its effect on transient transit times. Calibration of hydraulic conductivity, porosities, and tracer data successfully reproduces the concentrations and dynamics of the stream. Groundwater flow contribution is controlled by the hydraulic conductivity, while its age is controlled by the porosities.
WATER RESOURCES RESEARCH
(2022)
Article
Limnology
Chris D. Evans, Stacey L. Felgate, Steffi Carter, Mark Stinchcombe, Edward Mawji, Andrew P. Rees, Inma Lebron, Richard Sanders, Paul Brickle, Daniel J. Mayor
Summary: The interface between freshwater and marine systems, estuaries, can act as a filter of the land-ocean carbon flux, removing terrestrially derived dissolved organic carbon (DOC). However, the fate of peat-derived DOC within estuaries remains poorly understood due to various factors. The study of DOC and inorganic nutrients in minimally disturbed Falkland Island estuaries revealed limited evidence of estuarine DOC removal, but observed hot zones of biogeochemical activity and in situ DOC production. This suggests that estuaries receiving high organic matter inputs can serve as analogues for natural biogeochemical functioning in temperate estuaries.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Geosciences, Multidisciplinary
Christian B. Lewis, Brett D. Walker, Ellen R. M. Druffel
Summary: Radiocarbon measurements indicate that the deep ocean stores marine dissolved organic carbon (DOC) over millennial timescales, with solid-phase extraction (SPE) being a widely used technique to isolate DOC for analysis. Results show that the refractory DOC (RDOC) abundance is similar in the deep Pacific and Indian Oceans, while varying in the surface ocean based on total DOC concentration. This study fills in sampling gaps for SPE-DOC increment C-14 in the global ocean and provides consistent estimates of RDOC abundance compared to previous observations.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Review
Polymer Science
Pedro Verdugo
Summary: Similar to our body, the planet is a macroscopic dynamic system with compartmentalized controls that have enabled life and evolution. The transport of organic carbon in the ocean, forming marine gels, is a critical but often overlooked challenge. Understanding the fundamental nature of the molecular interactions in seawater is essential for comprehending carbon transport dynamics in the ocean.
Article
Environmental Sciences
Ariel S. Lewis, Thomas G. Huntington, Mark C. Marvin-DiPasquale, Aria Amirbahman
ENVIRONMENTAL POLLUTION
(2016)
Article
Environmental Sciences
William Balch, Thomas Huntington, George Aiken, David Drapeau, Bruce Bowler, Laura Lubelczyk, Kenna Butler
GLOBAL BIOGEOCHEMICAL CYCLES
(2016)
Review
Forestry
Thomas G. Huntington, Andrew D. Richardson, Kevin J. McGuire, Katharine Hayhoe
CANADIAN JOURNAL OF FOREST RESEARCH
(2009)
Article
Environmental Sciences
Kevin W. Hanley, Wilfred M. Wollheim, Joseph Salisbury, Thomas Huntington, George Aiken
GLOBAL BIOGEOCHEMICAL CYCLES
(2013)
Editorial Material
Water Resources
T. G. Huntington
HYDROLOGICAL PROCESSES
(2008)
Article
Meteorology & Atmospheric Sciences
Michael A. Rawlins, Michael Steele, Marika M. Holland, Jennifer C. Adam, Jessica E. Cherry, Jennifer A. Francis, Pavel Ya. Groisman, Larry D. Hinzman, Thomas G. Huntington, Douglas L. Kane, John S. Kimball, Ron Kwok, Richard B. Lammers, Craig M. Lee, Dennis P. Lettenmaier, Kyle C. McDonald, Erika Podest, Jonathan W. Pundsack, Bert Rudels, Mark C. Serreze, Alexander Shiklomanov, Oystein Skagseth, Tara J. Troy, Charles J. Voeroesmarty, Mark Wensnahan, Eric F. Wood, Rebecca Woodgate, Daqing Yang, Ke Zhang, Tingjun Zhang
JOURNAL OF CLIMATE
(2010)
Article
Meteorology & Atmospheric Sciences
T. G. Huntington, M. Billmire
JOURNAL OF HYDROMETEOROLOGY
(2014)
Article
Ecology
W. M. Balch, D. T. Drapeau, B. C. Bowler, T. G. Huntington
MARINE ECOLOGY PROGRESS SERIES
(2012)
Article
Environmental Sciences
Kaelin M. Cawley, Kenna D. Butler, George R. Aiken, Laurel G. Larsen, Thomas G. Huntington, Diane M. McKnight
MARINE POLLUTION BULLETIN
(2012)
Article
Engineering, Civil
T. G. Huntington, C. S. Roesler, G. R. Aiken
JOURNAL OF HYDROLOGY
(2019)
Article
Water Resources
Brent T. Aulenbach, Richard P. Hooper, H. J. (Ilja) van Meerveld, Douglas A. Burns, James E. Freer, James B. Shanley, Thomas G. Huntington, Jeffrey J. McDonnell, Norman E. Peters
Summary: The Panola Mountain Research Watershed (PMRW) is a forested catchment in the Southeastern United States where observations, experiments, and numerical modeling have been conducted over the past 35 years, leading to valuable insights regarding streamflow generation mechanisms. The extensive characterization of soil and bedrock has played a key role in forming hypotheses and understanding water flow mechanisms, demonstrating the importance of long-term studies and field evidence accumulation.
HYDROLOGICAL PROCESSES
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Armand LaRocque, Brigitte Leblon, Renata Woodward, Michael Mordini, Laura Bourgeau-Chavez, Antony Landon, Nancy French, Jessica McCarty, Tom Huntington, Phil Camill
2014 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
(2014)
Article
Meteorology & Atmospheric Sciences
Katharine Hayhoe, Cameron P. Wake, Thomas G. Huntington, Lifeng Luo, Mark D. Schwartz, Justin Sheffield, Eric Wood, Bruce Anderson, James Bradbury, Art DeGaetano, Tara J. Troy, David Wolfe
Review
Engineering, Civil
TG Huntington
JOURNAL OF HYDROLOGY
(2006)
Article
Engineering, Civil
Arfan Arshad, Ali Mirchi, Javier Vilcaez, Muhammad Umar Akbar, Kaveh Madani
Summary: High-resolution, continuous groundwater data is crucial for adaptive aquifer management. This study presents a predictive modeling framework that incorporates covariates and existing observations to estimate groundwater level changes. The framework outperforms other methods and provides reliable estimates for unmonitored sites. The study also examines groundwater level changes in different regions and highlights the importance of effective aquifer management.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Lihua Chen, Jie Deng, Wenzhe Yang, Hang Chen
Summary: A new grid-based distributed karst hydrological model (GDKHM) is developed to simulate streamflow in the flood-prone karst area of Southwest China. The results show that the GDKHM performs well in predicting floods and capturing the spatial variability of karst system.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Faruk Gurbuz, Avinash Mudireddy, Ricardo Mantilla, Shaoping Xiao
Summary: Machine learning algorithms have shown better performance in streamflow prediction compared to traditional hydrological models. In this study, researchers proposed a methodology to test and benchmark ML algorithms using artificial data generated by physically-based hydrological models. They found that deep learning algorithms can correctly identify the relationship between streamflow and rainfall in certain conditions, but fail to outperform traditional prediction methods in other scenarios.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Yadong Ji, Jianyu Fu, Bingjun Liu, Zeqin Huang, Xuejin Tan
Summary: This study distinguishes the uncertainty in drought projection into scenario uncertainty, model uncertainty, and internal variability uncertainty. The results show that the estimation of total uncertainty reaches a minimum in the mid-21st century and that model uncertainty is dominant in tropical regions.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Z. R. van Leeuwen, M. J. Klaar, M. W. Smith, L. E. Brown
Summary: This study quantifies the effectiveness of leaky dams in reducing flood peak magnitude using a transfer function noise modelling approach. The results show that leaky dams have a significant but highly variable impact on flood peak magnitude, and managing expectations should consider event size and type.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Zeda Yin, Yasaman Saadati, M. Hadi Amini, Linlong Bian, Beichao Hu
Summary: Combined sewer overflows pose significant threats to public health and the environment, and various strategies have been proposed to mitigate their adverse effects. Smart control strategies have gained traction due to their cost-effectiveness but face challenges in balancing precision and computational efficiency. To address this, we propose exploring machine learning models and the inversion of neural networks for more efficient CSO prediction and optimization.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Qimou Zhang, Jiacong Huang, Jing Zhang, Rui Qian, Zhen Cui, Junfeng Gao
Summary: This study developed a N-cycling model for lowland rural rivers covered by macrophytes and investigated the N imports, exports, and response to sediment dredging. The findings showed a considerable N retention ability in the study river, with significant N imports from connected rivers and surrounding polders. Sediment dredging increased particulate nitrogen resuspension and settling rates, while decreasing ammonia nitrogen release, denitrification, and macrophyte uptake rates.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Xue Li, Yingyin Zhou, Jian Sha, Man Zhang, Zhong-Liang Wang
Summary: High-resolution climate data is crucial for predicting regional climate and water environment changes. In this study, a two-step downscaling method was developed to enhance the spatial resolution of GCM data and improve the accuracy for small basins. The method combined medium-resolution climate data with high-resolution topographic data to capture spatial and temporal details. The downscaled climate data were then used to simulate the impacts of climate change on hydrology and water quality in a small basin. The results demonstrated the effectiveness of the downscaling method for spatially differentiated simulations.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Tongqing Shen, Peng Jiang, Jiahui Zhao, Xuegao Chen, Hui Lin, Bin Yang, Changhai Tan, Ying Zhang, Xinting Fu, Zhongbo Yu
Summary: This study evaluates the long-term interannual dynamics of permafrost distribution and active layer thickness on the Tibetan Plateau, and predicts future degradation trends. The results show that permafrost area has been decreasing and active layer thickness has been increasing, with an accelerated degradation observed in recent decades. This has significant implications for local water cycle processes, water ecology, and water security.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Chi Zhang, Xu Zhang, Qiuhong Tang, Deliang Chen, Jinchuan Huang, Shaohong Wu, Yubo Liu
Summary: Precipitation over the Tibetan Plateau is influenced by systems such as the Asian monsoons, the westerlies, and local circulations. The Indian monsoon, the westerlies, and local circulations are the main systems affecting precipitation over the entire Tibetan Plateau. The East Asian summer monsoon primarily affects the eastern Tibetan Plateau. The Indian monsoon has the greatest influence on precipitation in the southern and central grid cells, while the westerlies have the greatest influence on precipitation in the northern and western grid cells. Local circulations have the strongest influence on the central and eastern grid cells.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Manuel Almeida, Antonio Rodrigues, Pedro Coelho
Summary: This study aimed to improve the accuracy of Total Phosphorus export coefficient models, which are essential for water management. Four different models were applied to 27 agroforestry watersheds in the Mediterranean region. The modeling approach showed significant improvements in predicting the Total Phosphorus diffuse loads.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Yutao Wang, Haojie Yin, Ziyi Wang, Yi Li, Pingping Wang, Longfei Wang
Summary: This study investigated the distribution and transformation of dissolved organic nitrogen (DON) in riverbed sediments impacted by effluent discharge. The authors found that the spectral characteristics of dissolved organic matter (DOM) in surface water and sediment porewater could be used to predict DON variations in riverbed sediments. Random forest and extreme gradient boosting machine learning methods were employed to provide accurate predictions of DON content and properties at different depths. These findings have important implications for wastewater discharge management and river health.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Saba Mirza Alipour, Kolbjorn Engeland, Joao Leal
Summary: This study assesses the uncertainty associated with 100-year flood maps under different scenarios using Monte Carlo simulations. The findings highlight the importance of employing probabilistic approaches for accurate and secure flood maps, with the selection of probability distribution being the primary source of uncertainty in precipitation.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Janine A. de Wit, Marjolein H. J. van Huijgevoort, Jos C. van Dam, Ge A. P. H. van den Eertwegh, Dion van Deijl, Coen J. Ritsema, Ruud P. Bartholomeus
Summary: The study focuses on the hydrological consequences of controlled drainage with subirrigation (CD-SI) on groundwater level, soil moisture content, and soil water potential. The simulations show that CD-SI can improve hydrological conditions for crop growth, but the success depends on subtle differences in geohydrologic characteristics.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Constantin Seidl, Sarah Ann Wheeler, Declan Page
Summary: Water availability and quality issues will become increasingly important in the future due to climate change impacts. Managed Aquifer Recharge (MAR) is an effective water management tool, but often overlooked. This study analyzes global MAR applications and identifies the key factors for success, providing valuable insights for future design and application.
JOURNAL OF HYDROLOGY
(2024)