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1. Modeling the Resilience Performance of Houston’s Wastewater Treatment Plant under Wet Weather Conditions

   https://doi.org/10.1061/JSWBAY.SWENG-609  

   Liu, Lu; Morrison, Jarrett; Stadler, Lauren; Shaw, Andrew; Vela, Jeseth Delgado; Christenson, Dylan (May 2025, Journal of Sustainable Water in the Built Environment)
2. MCMC inversion of the transient and steady-state creep flow law parameters of dunite under dry and wet conditions

   https://doi.org/10.1186/s40623-021-01543-9  

   Masuti, Sagar; Barbot, Sylvain (December 2021, Earth, Planets and Space)

   Abstract The rheology of the upper mantle impacts a variety of geodynamic processes, including postseismic deformation following great earthquakes and post-glacial rebound. The deformation of upper mantle rocks is controlled by the rheology of olivine, the most abundant upper mantle mineral. The mechanical properties of olivine at steady state are well constrained. However, the physical mechanism underlying transient creep, an evolutionary, hardening phase converging to steady state asymptotically, is still poorly understood. Here, we constrain a constitutive framework that captures transient creep and steady state creep consistently using the mechanical data from laboratory experiments on natural dunites containing at least 94% olivine under both hydrous and anhydrous conditions. The constitutive framework represents a Burgers assembly with a thermally activated nonlinear stress-versus-strain-rate relationship for the dashpots. Work hardening is obtained by the evolution of a state variable that represents internal stress. We determine the flow law parameters for dunites using a Markov chain Monte Carlo method. We find the activation energy $$430\pm 20$$ 430 ± 20   and $$250\pm 10$$ 250 ± 10  kJ/mol for dry and wet conditions, respectively, and the stress exponent $$2.0\pm 0.1$$ 2.0 ± 0.1 for both the dry and wet cases for transient creep, consistently lower than those of steady-state creep, suggesting a separate physical mechanism. For wet dunites in the grain-boundary sliding regime, the grain-size dependence is similar for transient creep and steady-state creep. The lower activation energy of transient creep could be due to a higher jog density of the corresponding soft-slip system. More experimental data are required to estimate the activation volume and water content exponent of transient creep. The constitutive relation used and its associated flow law parameters provide useful constraints for geodynamics applications. Graphical Abstract 

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3. Spatial Persistence of Water Chemistry Patterns Across Flow Conditions in a Mesoscale Agricultural Catchment

   https://doi.org/10.1029/2020WR029053  

   Gu, S.; Casquin, A.; Dupas, R.; Abbott, B. W.; Petitjean, P.; Durand, P.; Gruau, G. (July 2021, Water Resources Research)

   null (Ed.)
4. Implications of Lateral Groundwater Flow Across Varying Spatial Resolutions in Global Land Surface Modeling

   https://doi.org/10.1029/2024WR038523  

   Akhter, Tanjila; Pokhrel, Yadu; Felfelani, Farshid; Ducharne, Agnès; Lo, Min‐Hui; Reinecke, Robert (July 2025, Water Resources Research)

   Abstract Accurate groundwater representation in land surface models (LSMs) is vital for water and energy cycle studies, water resource assessments, and climate projections. Yet, many LSMs do not consider key processes including lateral groundwater flow and aquifer pumping, especially at the global scale. This study simulates these processes using an enhanced version of the Community Land Model (CLM5) and evaluates their roles at three spatial resolutions (0.5°, 0.25°, 0.1°). Results show that lateral flow strongly modulates water table depth and capillary rise at all resolutions. The magnitude of mean lateral flow increases from 25 mm/year at 0.5° to 36 mm/year at 0.25°, and 52 mm/year at 0.1° resolution, with pumping inducing lateral flow even at 0.5° (∼50 km), a typical grid size in global LSMs. Further, lateral flow alters runoff in regions with high recharge and shallow water table (e.g., eastern North America and Amazon basin), and soil moisture and ET in regions with comparatively low recharge and deeper water table (e.g., western North America, central Asia, and Australia) through enhanced capillary rise. Runoff alteration by lateral flow increases substantially with resolution, from a maximum of 15 mm/month at 0.5° to 20 mm/month and 25 mm/month at 0.25° and 0.1°, respectively; the impact of resolution on soil moisture and ET is less pronounced. While the model does not fully capture deeper water tables—warranting further enhancements—it provides valuable insights on how lateral groundwater flow impacts land surface processes, highlighting the importance of lateral groundwater flow and pumping in global LSMs. 

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5. Significant Decrease in Wet Deposition of Anthropogenic Chloride Across the Eastern United States, 1998–2018

   https://doi.org/10.1029/2020GL090195  

   Haskins, Jessica D.; Jaeglé, Lyatt; Thornton, Joel A. (November 2020, Geophysical Research Letters)

   Abstract Using deposition observations from precipitation samples collected by the National Atmospheric Deposition Program at 125 sites across the United States, we show that the mean wet deposition flux of non‐sea‐salt chloride (NSS Cl⁻) has decreased by 83% throughout the eastern United States between 1998 and 2018. We find that 30% of the sites switch from having excess Cl⁻to being depleted in Cl⁻. We attribute the observed decreases in NSS Cl⁻deposition to a 95% decrease in U.S. anthropogenic HCl emissions since 1998. We propose that industry emission controls that remove HCl as a cobenefit of NO_xand SO₂have caused significant decreases in NSS Cl⁻deposition throughout the eastern United States, in addition to shifts from coal to natural gas and to coal with lower Cl⁻content. Our analysis implies that the lower tropospheric reactive inorganic chlorine burden was larger over the United States in the past than it is today. 

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