Performance of a One-Dimensional Model of Wave-Driven Nearshore Alongshore Tracer Transport and Decay with Applications for Dry Weather Coastal Pollution

Dry weather pollution sources cause coastal water quality problems that are not accounted for in existing beach advisory metrics. A 1D wave-driven advection and loss model was developed for a 30 km nearshore domain spanning the United States/Mexico border region. Bathymetric nonuniformities, such as the inlet and shoal near the Tijuana River estuary mouth, were neglected. Nearshore alongshore velocities were estimated by using wave properties at an offshore location. The 1D model was evaluated using the hourly output of a 3D regional hydrodynamic model. The 1D model had high skill in reproducing the spatially averaged alongshore velocities from the 3D model. The 1D and 3D models agreed on tracer exceedance or nonexceedance above a human illness probability threshold for 87% of model time steps. 1D model tracer was well-correlated with targeted water samples tested for DNA-based human fecal indicators. This demonstrates that a simple, computationally fast, 1D nearshore wave-driven advection model can reproduce nearshore tracer evolution from a 3D model over a range of wave conditions ignoring bathymetric nonuniformities at this site and may be applicable to other locations.

[1]  Arah,et al.  Automated temporal tracking of coherently evolving density fronts in numerical models , 2021, Journal of Atmospheric and Oceanic Technology.

[2]  J. Vose,et al.  Extreme Flooding and Nitrogen Dynamics of a Blackwater River , 2021, Water Resources Research.

[3]  S. Giddings,et al.  Long‐distance/time surf‐zone tracer evolution affected by inner‐shelf tracer retention and recirculation , 2021, Journal of Geophysical Research: Oceans.

[4]  S. Giddings,et al.  Modeling Untreated Wastewater Evolution and Swimmer Illness for Four Wastewater Infrastructure Scenarios in the San Diego‐Tijuana (US/MX) Border Region , 2021, GeoHealth.

[5]  C. Staley,et al.  A Combined Digital PCR and Next Generation DNA-Sequencing Based Approach for Tracking Nearshore Pollutant Dynamics Along the Southwest United States/Mexico Border , 2021, Frontiers in Microbiology.

[6]  S. Giddings,et al.  Diagnosing surfzone impacts on inner-shelf flow spatial variability using realistic model experiments with and without surface gravity waves , 2021, Journal of Physical Oceanography.

[7]  S. Giddings,et al.  Characteristics and Dynamics of Density Fronts over the Inner to Midshelf under Weak Wind Conditions , 2021, Journal of Physical Oceanography.

[8]  A. Boehm,et al.  Refined ambient water quality thresholds for human-associated fecal indicator HF183 for recreational waters with and without co-occurring gull fecal contamination , 2020 .

[9]  T. Schlurmann,et al.  Wave-Induced Distribution of Microplastic in the Surf Zone , 2020, Frontiers in Marine Science.

[10]  C. Chickadel,et al.  Warm and Cool Nearshore Plumes Connecting the Surf Zone to the Inner Shelf , 2020, Geophysical Research Letters.

[11]  S. Giddings,et al.  Mechanisms of Mid- to Outer-Shelf Transport of Shoreline-Released Tracers , 2020, Journal of Physical Oceanography.

[12]  A. Horner‐Devine,et al.  A Conceptual Model of a River Plume in the Surf Zone , 2019, Journal of Geophysical Research: Oceans.

[13]  M. Merrifield,et al.  Sixteen years of bathymetry and waves at San Diego beaches , 2019, Scientific Data.

[14]  P. MacCready,et al.  Larval Transport Modeling Support for Identifying Population Sources of European Green Crab in the Salish Sea , 2019, Estuaries and Coasts.

[15]  Charles P. Humphrey,et al.  Geochemistry of Flood Waters from the Tar River, North Carolina Associated with Hurricane Matthew , 2019, Resources.

[16]  S. Giddings,et al.  Impacts of Nearshore Wave‐Current Interaction on Transport and Mixing of Small‐Scale Buoyant Plumes , 2018, Geophysical Research Letters.

[17]  A. Boehm,et al.  Can We Swim Yet? Systematic Review, Meta-Analysis, and Risk Assessment of Aging Sewage in Surface Waters. , 2018, Environmental science & technology.

[18]  W. Dally,et al.  The Longshore Transport Enigma and Analysis of a 10-Year Record of Wind-Driven Nearshore Currents , 2017, Journal of Coastal Research.

[19]  S. Elgar,et al.  Rip currents and alongshore flows in single channels dredged in the surf zone , 2017 .

[20]  Nirnimesh Kumar,et al.  A new offshore transport mechanism for shoreline‐released tracer induced by transient rip currents and stratification , 2017 .

[21]  S. Elgar,et al.  Observations and modeling of a tidal inlet dye tracer plume , 2016 .

[22]  Orin C. Shanks,et al.  Human-Associated Fecal Quantitative Polymerase Chain Reaction Measurements and Simulated Risk of Gastrointestinal Illness in Recreational Waters Contaminated with Raw Sewage , 2015 .

[23]  R. Guza,et al.  Surfzone to inner‐shelf exchange estimated from dye tracer balances , 2015 .

[24]  F. Feddersen,et al.  A self‐similar scaling for cross‐shelf exchange driven by transient rip currents , 2015 .

[25]  Eric Terrill,et al.  An assessment of the transport of southern California stormwater ocean discharges. , 2015, Marine pollution bulletin.

[26]  J. F. Skinner,et al.  Small drains, big problems: the impact of dry weather runoff on shoreline water quality at enclosed beaches. , 2014, Environmental science & technology.

[27]  R. Guza,et al.  Cross-shore tracer exchange between the surfzone and inner-shelf , 2014 .

[28]  S. Siedlecki,et al.  Hindcasts of potential harmful algal bloom transport pathways on the Pacific Northwest coast , 2014 .

[29]  Pierre Servais,et al.  Modeling Fecal Indicator Bacteria Concentrations in Natural Surface Waters: A Review , 2014 .

[30]  K. Gin,et al.  Modeling the effect of light and salinity on viable but non-culturable (VBNC) Enterococcus. , 2013, Water research.

[31]  V. Harwood,et al.  Enterococci in the Environment , 2012, Microbiology and Molecular Reviews.

[32]  N. Ashbolt,et al.  Estimating the primary etiologic agents in recreational freshwaters impacted by human sources of faecal contamination. , 2010, Water research.

[33]  K. Cho,et al.  Meteorological effects on the levels of fecal indicator bacteria in an urban stream: a modeling approach. , 2010, Water research.

[34]  B. Cornuelle,et al.  Assessing coastal plumes in a region of multiple discharges: the U.S.-Mexico border. , 2009, Environmental science & technology.

[35]  Donna S. Francy,et al.  Use of predictive models and rapid methods to nowcast bacteria levels at coastal beaches , 2009 .

[36]  John M Colford,et al.  A sea change ahead for recreational water quality criteria. , 2008, Journal of water and health.

[37]  Scott A. Jenkins,et al.  Surf zone entrainment, along-shore transport, and human health implications of pollution from tidal outlets , 2005 .

[38]  A. Boehm,et al.  An analytical model of enterococci inactivation, grazing, and transport in the surf zone of a marine beach. , 2005, Water research.

[39]  R. Gordon,et al.  Transport and deposition of sediment-associated Escherichia coli in natural streams. , 2005, Water research.

[40]  S. Grant,et al.  Public mis-notification of coastal water quality: a probabilistic evaluation of posting errors at Huntington Beach, California. , 2004, Environmental science & technology.

[41]  A. Boehm.  Model of microbial transport and inactivation in the surf zone and application to field measurements of total coliform in Northern Orange County, California. , 2003, Environmental science & technology.

[42]  Hillel Shuval,et al.  Estimating the global burden of thalassogenic diseases: human infectious diseases caused by wastewater pollution of the marine environment. , 2003, Journal of water and health.

[43]  P. Holden,et al.  A mechanistic model of runoff-associated fecal coliform fate and transport through a coastal lagoon. , 2003, Water research.

[44]  S. Weisberg,et al.  Effect of sampling frequency on shoreline microbiology assessments. , 2001, Marine pollution bulletin.

[45]  S. Elgar,et al.  Momentum balances on the North Carolina inner shelf , 1999 .

[46]  F. Feddersen.  Weakly nonlinear shear waves , 1998, Journal of Fluid Mechanics.

[47]  R. Davies‐Colley,et al.  Sunlight Inactivation of Enterococci and Fecal Coliforms in Sewage Effluent Diluted in Seawater , 1994, Applied and environmental microbiology.

[48]  Edward B. Thornton,et al.  Surf Zone Longshore Currents and Random Waves: Field Data and Models , 1986 .

[49]  Edward B. Thornton,et al.  Transformation of wave height distribution , 1983 .

[50]  D. Wright,et al.  Time-Averaged Forms of the Nonlinear Stress Law , 1983 .

[51]  C. Willmott.  ON THE VALIDATION OF MODELS , 1981 .

[52]  G. Kleinheinz,et al.  Human and ecosystem health in coastal systems , 2022 .

[53]  Lauren M. Sassoubre,et al.  Decay of sewage-sourced microbial source tracking markers and fecal indicator bacteria in marine waters. , 2017, Water research.

[54]  John C. Warner,et al.  Implementation of the vortex force formalism in the coupled ocean-atmosphere-wave-sediment transport (COAWST) modeling system for inner shelf and surf zone applications , 2012 .

[55]  R. He,et al.  Development of a Coupled Ocean-Atmosphere-Wave-Sediment Transport (COAWST) Modeling System , 2010 .

[56]  Alexander F. Shchepetkin,et al.  The regional oceanic modeling system (ROMS): a split-explicit, free-surface, topography-following-coordinate oceanic model , 2005 .

[57]  N. Booij,et al.  A third-generation wave model for coastal regions Model description and validation , 2022 .