Article
Engineering, Civil
Junhao He, Mohamed M. Hantush, Latif Kalin, Mehdi Rezaeianzadeh, Sabahattin Isik
Summary: This paper presents a two-layer approximation of Richards' equation for simulating water moisture flow in variably saturated soils with a relatively shallow water table, which provides a more accurate description of soil moisture content and flow dynamics. The numerical model evaluation shows that the new model is numerically stable and accurate in simulating vertically-averaged soil moisture under various conditions, and can be used for simulating variably saturated soils in wetlands and managing conjunctive use of surface and groundwater by water resources planners.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
Jannes Kordilla, Marco Dentz, Alexandre M. Tartakovsky
Summary: Infiltration processes in fractured-porous media are crucial but not well understood. Flow dynamics in fractures under partially saturated conditions contribute to the fastest infiltration velocities, and the dynamics at fracture intersections determine the flow fragmentation and dispersion of fracture networks. This study provides an analytical concept to potentially reconstruct internal fracture network geometries from external boundary information.
WATER RESOURCES RESEARCH
(2021)
Article
Engineering, Environmental
Richard H. Anderson
Summary: Entities worldwide are carrying out extensive field campaigns to characterize the environmental distribution of PFAS, while regulatory agencies are defining criteria to determine the nature and extent of PFAS contamination. Current soil criteria are based on traditional methods, but research has shown the need for alternative approaches to accurately assess PFAS transport.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
William R. Gnesda, Elliot F. Draxler, James Tinjum, Christopher Zahasky
Summary: This study presents a semi-analytical framework for synthesizing and upscaling the adsorption of PFAAs in vadose zone systems. The results show that air-water and organic carbon solid-phase adsorption processes dominate in the vadose zone, and strong sorption heterogeneity driven by depth-dependent mechanisms leads to complex spatially variable retardation profiles.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Water Resources
Nicholas Kettridge, Maxwell C. Lukenbach, Kelly J. Hokanson, Kevin J. Devito, Richard M. Petrone, Carl A. Mendoza, James Michael Waddington
Summary: The impact of wildfires on peatland ecosystems can significantly affect their ability to regulate evapotranspiration, which is crucial for predicting hydrological conditions and carbon stocks under future climate scenarios.
HYDROLOGICAL PROCESSES
(2021)
Article
Environmental Sciences
Arindam Malakar, Chittaranjan Ray, Matteo DAlessio, Jordan Shields, Craig Adams, Marty Stange, Karrie A. Weber, Daniel D. Snow
Summary: In this large-scale field study, the input and occurrence of water and nitrogen species in the vadose zone were evaluated, as well as the potential transport of nitrate, ammonium, arsenic, and uranium. The study found that irrigation practices significantly affected the concentrations of nitrogen species in the sediment, and the distribution of arsenic and uranium correlated with the input of nitrogen and water.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Civil
Weijian Li, Jinguo Wang, Walter A. Illman, Yue Zhuo
Summary: The depth of water table affects evaporation in arid and semi-arid regions. This study conducted soil evaporation experiments under shallow and deep water table conditions and simulated the coupled transport of liquid water, water vapor, and heat using a numerical model. The experimental and numerical results were in agreement. Both isothermal liquid flux and thermal vapor flux were calculated and analyzed to understand the distribution of water content. The location and dynamic variation of the evaporation front were determined, revealing differences between shallow and deep water table conditions.
JOURNAL OF HYDROLOGY
(2023)
Review
Environmental Sciences
Isaac Kramer, Yair Mau
Summary: Soil salinity and sodicity pose threats to plant growth and soil health, especially when using marginal quality water with high salt concentrations in agricultural systems. Models play a crucial role in understanding and managing these risks, allowing us to explore various future scenarios and predict the consequences of agricultural practices. This review examines advanced models that study how salinity and sodicity affect plant health and soil structure, with a focus on their integration into dynamic models to analyze evolving plant and soil responses under changing climate and irrigation conditions. The review also highlights the differences in complexity and suitability of existing modeling frameworks for integration into larger climate models, along with important applications of these models in studying salt leaching, ion chemistry, layered profiles, and long-term soil degradation caused by specific irrigation practices.
WATER RESOURCES RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Damien Delforge, Olivier de Viron, Marnik Vanclooster, Michel Van Camp, Arnaud Watlet
Summary: The potential of causal inference methods (CIMs) in revealing hydrological connections is investigated. The multivariate nonlinear framework is found to be the most suitable for this purpose. However, for real case studies, the method's stability may be affected by missing data distribution, requiring caution in interpreting the results. Nevertheless, all CIMs provide valuable insights into the system's dynamics and are cost-effective comparative tools for exploring data.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2022)
Article
Environmental Sciences
Miguel A. Martin del Campo, Maria V. Esteller, Ignacio Morell, Jose L. Exposito, Gladys L. Bandenay, Eric Morales-Casique
Summary: The study suggests that the use of hydrogel could be a good option for controlling leaching and is recommended for use, for example, in intensive crop fields or greenhouse crops.
JOURNAL OF SOILS AND SEDIMENTS
(2021)
Article
Environmental Sciences
Ase Hoisaeter, Hans Peter H. Arp, Goril Slinde, Heidi Knutsen, Sarah E. Hale, Gijs D. Breedveld, Mona C. Hansen
Summary: In situ soil washing is an efficient and cost-effective remediation strategy, especially when a pump-and-treat system is already in place. Challenges at the field scale include the heterogeneity of soil and preferential flow paths that may prevent full saturation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Kalle L. Jahn, Demian M. Saffer, Katherine H. Freeman, Sara A. Lincoln
Summary: This study evaluates the mass balance of perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) in soil cores collected from wastewater-irrigated soils and estimates historical effluent concentrations. The results show that the total mass of PFOS and PFOA in the soil is much higher than the annual mass loads applied in 2020, indicating higher historical concentrations. The study also finds that PFOS takes 50 years to leach into groundwater, while PFOA only takes 10 years.
WATER RESOURCES RESEARCH
(2023)
Article
Engineering, Environmental
Ruo He, Chun Peng, Lei Jiang, Hua Han, Yi-Xuan Chu, Jing Wang, Chen-Yang Liu, Nannan Zhao
Summary: Leachate leakage from landfills poses a significant environmental risk. This study investigated the leaching characteristics of pollutants in two landfills and found that TN, NH4+-N, OM, NO3--N, and EC can be used as characteristic pollutants for evaluating leachate leakage issues. The microbial community structures in the underlying soils were influenced by nitrogenous compounds, SO42-, pH, and EC. Hydrogenispora and Caldicoprobacter were identified as characteristic microorganisms for assessing leachate leakage.
Article
Engineering, Civil
Shouzheng Jiang, Chuan Liang, Lu Zhao, Daozhi Gong, Yaowei Huang, Liwen Xing, Shidan Zhu, Yu Feng, Li Guo, Ningbo Cui
Summary: Understanding and quantifying energy and water flux cycling is crucial for studying hydrological processes and managing water resources in agricultural ecosystems. This study used various techniques and models to examine energy and water flux in a kiwifruit orchard in southwest China. The results showed that latent heat flux dominated the consumption of net radiation energy, and the ET models performed well in estimating ET and its components. These findings have important implications for eco-hydrological process analysis and water flux estimation in similar environmental conditions.
JOURNAL OF HYDROLOGY
(2022)
Article
Engineering, Environmental
Teresa Baraza, Elizabeth A. Hasenmueller
Summary: Microplastics are a newly emerging contaminant found in virtually all environments. While research on microplastics in surface waters has been increasing, their contamination in subsurface environments, especially karst terrains, remains understudied. This study aims to identify the extent, sourcing, and transport of anthropogenic microparticles in subsurface karst environments. The study found anthropogenic microparticles present in all samples, with the most common types being fibrous and clear. Microplastics were found to originate from surface recharge or sediment resuspension within the cave, and their concentrations and transport increased during floods. The study provides new insights into the transportation of anthropogenic microparticles through karst landscapes and has implications for debris mitigation strategies to protect ecosystems and water resources.
Article
Agronomy
T. H. Skaggs, R. G. Anderson, J. G. Alfieri, T. M. Scanlon, W. P. Kustas
AGRICULTURAL AND FOREST METEOROLOGY
(2018)
Article
Environmental Sciences
Daniel J. Ashworth, Scott R. Yates, Ray G. Anderson, Ian J. van Wesenbeeck, Jodi Sangster, Li Ma
ATMOSPHERIC ENVIRONMENT
(2018)
Article
Agronomy
Donald L. Suarez, Nydia Celis, Ray G. Anderson, Devinder Sandhu
Article
Environmental Sciences
Ray G. Anderson, Scott R. Yates, Daniel J. Ashworth, Dennise L. Jenkins, Qiaoping Zhang
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Editorial Material
Agronomy
Ray G. Anderson, Andrew N. French
Article
Environmental Sciences
Francisco Goncalo Filho, Nildo da Silva Dias, Stella Ribeiro Prazeres Suddarth, Jorge F. S. Ferreira, Ray G. Anderson, Cleyton dos Santos Fernandes, Raniere Barbosa de Lira, Miguel Ferreira Neto, Christiano Reboucas Cosme
Article
Environmental Sciences
Joshua B. Fisher, Brian Lee, Adam J. Purdy, Gregory H. Halverson, Matthew B. Dohlen, Kerry Cawse-Nicholson, Audrey Wang, Ray G. Anderson, Bruno Aragon, M. Altaf Arain, Dennis D. Baldocchi, John M. Baker, Helene Barral, Carl J. Bernacchi, Christian Bernhofer, Sebastien C. Biraud, Gil Bohrer, Nathaniel Brunsell, Bernard Cappelaere, Saulo Castro-Contreras, Junghwa Chun, Bryan J. Conrad, Edoardo Cremonese, Jerome Demarty, Ankur R. Desai, Anne De Ligne, Lenka Foltynova, Michael L. Goulden, Timothy J. Griffis, Thomas Gruenwald, Mark S. Johnson, Minseok Kang, Dave Kelbe, Natalia Kowalska, Jong-Hwan Lim, Ibrahim Mainassara, Matthew F. McCabe, Justine E. C. Missik, Binayak P. Mohanty, Caitlin E. Moore, Laura Morillas, Ross Morrison, J. William Munger, Gabriela Posse, Andrew D. Richardson, Eric S. Russell, Youngryel Ryu, Arturo Sanchez-Azofeifa, Marius Schmidt, Efrat Schwartz, Iain Sharp, Ladislav Sigut, Yao Tang, Glynn Hulley, Martha Anderson, Christopher Hain, Andrew French, Eric Wood, Simon Hook
WATER RESOURCES RESEARCH
(2020)
Article
Environmental Sciences
Pradeep Wagle, Todd H. Skaggs, Prasanna H. Gowda, Brian K. Northup, James P. S. Neel, Ray G. Anderson
Summary: The study compared different WUE algorithms in various grain crops and found discrepancies in the output partitioning among the models. The T:ET ratios varied among crops, with crops showing larger variations in computed T:ET also having higher estimated WUE magnitudes. Different parameterizations showed varying potential to partition ET, with the optimized WUE approach showing promise for C-3 crops.
WATER RESOURCES RESEARCH
(2021)
Article
Environmental Sciences
Y. Pachepsky, R. Anderson, T. Harter, D. Jacques, R. Jamieson, J. Jeong, H. Kim, K. Lamorski, G. Martinez, Y. Ouyang, S. Shukla, Y. Wan, W. Zheng, W. Zhang
Summary: This paper discusses the changes in pollutant concentrations in environmental media and their influencing factors, such as transport, adsorption, degradation, etc., pointing out the coupling relationship between movement and biogeochemical processes in "fate and transport". JEQ has published papers on F&T, focusing mainly on solution composition, the role of organic matter, and different F&T pathways.
JOURNAL OF ENVIRONMENTAL QUALITY
(2021)
Article
Water Resources
Adam P. Schreiner-McGraw, Hoori Ajami, Ray G. Anderson, Dong Wang
Summary: Accurate simulation of plant water use is crucial for various applications, and using transpiration (T) and evapotranspiration (ET) data for model parameterization improves model performance. Selecting parameters based on ET and T performance metrics yields the best results in irrigated settings.
HYDROLOGICAL PROCESSES
(2022)
Article
Environmental Sciences
Yujuan Fu, Xudong Zhang, Ray G. Anderson, Ruiqiang Shi, Di Wu, Qiucheng Ge
Summary: This study analyzes the drought situation in the Haihe Plain and its impact on agriculture. The research finds that the region suffers from serious water shortage and frequent drought events, leading to crop reduction. Over the past 63 years, the area has shown a tendency towards drought, with increasing drought trends in spring and decreasing trends in summer. The study also reveals that the cloud model indicates a trend towards stability and uniformity in drought conditions at each station.
Article
Multidisciplinary Sciences
J. M. Volk, J. L. Huntington, F. Melton, B. Minor, T. Wang, S. Anapalli, R. G. Anderson, S. Evett, A. French, R. Jasoni, N. Bambach, W. P. Kustas, J. Alfieri, J. Prueger, L. Hipps, L. McKee, S. J. Castro, M. M. Alsina, A. J. McElrone, M. Reba, B. Runkle, M. Saber, C. Sanchez, E. Tajfar, R. Allen, M. Anderson
Summary: This study presents a post-processed dataset of evapotranspiration (ET) measurements, including daily and monthly data from 161 stations. The dataset also includes energy and heat fluxes, meteorological measurements, and reference ET. It is crucial for water management and earth science research.
Article
Soil Science
Sarah A. Helalia, Ray G. Anderson, Todd H. Skaggs, Jirka Simunek
Summary: The study assessed the root zone salinities of almond and pistachio orchards in the San Joaquin Valley, California, and investigated the impact of different factors on root water uptake. Experimental results showed that the effects of rain on salinity were influenced by initial salinity levels and the salinity of the irrigation water source.
Article
Soil Science
Sarah A. Helalia, Ray G. Anderson, Todd H. Skaggs, G. Darrel Jenerette, Dong Wang, Jirka Simunek
Summary: This study monitored root zone salinity in five almond and pistachio orchards in eastern and western San Joaquin Valley, California. It found that the eastern sites had lower salinity levels compared to the western sites. Additionally, the study revealed that the actual evapotranspiration in the western sites was about 90% of the modeled crop evapotranspiration, while in the eastern sites it closely matched the modeled crop evapotranspiration, with an apparent leaching fraction of approximately 20%.
Article
Meteorology & Atmospheric Sciences
Robert J. Allen, Ray G. Anderson
NPJ CLIMATE AND ATMOSPHERIC SCIENCE
(2018)