Toward more mechanistic representations of biogeochemical processes in stream and river networks: Implementation and demonstration of a multiscale model : Modeling Archive

Jan, Ahmad; Coon, Ethan; Painter, Scott

doi:10.12769/1785972

Title: Toward more mechanistic representations of biogeochemical processes in stream and river networks: Implementation and demonstration of a multiscale model : Modeling Archive

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Abstract

This Modeling Archive supports the ORNL-SFA and IDEAS-Waterhsed publication submitted to Environmental Modeling and Software. A recently introduced multiscale model for representing the combined effect of hyporheic exchange flows and small-scale hyporheic-zone biogeochemical processes is extended from the reach scale to river network scales. The ADELS (Advection Dispersion Equation with Lagrangian Subgrid) model uses a one-dimensional advection-dispersion-reaction equation for the channel network and couples that equation at each channel location to a one-dimensional advection-reaction subgrid model representing an ensemble of streamlines that are diverted into the hyporheic zone before returning to the channel. The subgrid model is written in a computationally advantageous Lagrangian form with hyporheic age replacing the hyporheic travel distance. In the paper, we summarized implementation in the integrated surface/subsurface hydrology modeling system Advanced Terrestrial Simulator (ATS).

Authors:

; Coon, Ethan; Painter, Scott

Publication Date:: Fri Jun 04 00:00:00 EDT 2021

Other Number(s):: MCI545

DOE Contract Number:: AC05-00OR22725

Research Org.:: ORNLCIFSFA (Critical Interfaces Science Focus Area); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science Division

Collaborations:: Oak Ridge National Laboratory

Keywords:: ; East Fork Poplar Creek; Portage River basin

OSTI Identifier:: 1785972

DOI:: https://doi.org/10.12769/1785972

Citation Formats


                    Jan, Ahmad, Coon, Ethan, and Painter, Scott. Toward more mechanistic representations of biogeochemical processes in stream and river networks: Implementation and demonstration of a multiscale model : Modeling Archive.  United States: N. p., 2021. 
        Web.  doi:10.12769/1785972.

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                    Jan, Ahmad, Coon, Ethan, & Painter, Scott. Toward more mechanistic representations of biogeochemical processes in stream and river networks: Implementation and demonstration of a multiscale model : Modeling Archive.  United States.  doi:https://doi.org/10.12769/1785972

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                    Jan, Ahmad, Coon, Ethan, and Painter, Scott. 2021.  
"Toward more mechanistic representations of biogeochemical processes in stream and river networks: Implementation and demonstration of a multiscale model : Modeling Archive".  United States.  doi:https://doi.org/10.12769/1785972.  https://www.osti.gov/servlets/purl/1785972. Pub date:Fri Jun 04 00:00:00 EDT 2021

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@article{osti_1785972,

  title        = {Toward more mechanistic representations of biogeochemical processes in stream and river networks: Implementation and demonstration of a multiscale model : Modeling Archive},

  author       = {Jan, Ahmad and Coon, Ethan and Painter, Scott},

  abstractNote = {This Modeling Archive supports the ORNL-SFA and IDEAS-Waterhsed publication submitted to Environmental Modeling and Software. A recently introduced multiscale model for representing the combined effect of hyporheic exchange flows and small-scale hyporheic-zone biogeochemical processes is extended from the reach scale to river network scales. The ADELS (Advection Dispersion Equation with Lagrangian Subgrid) model uses a one-dimensional advection-dispersion-reaction equation for the channel network and couples that equation at each channel location to a one-dimensional advection-reaction subgrid model representing an ensemble of streamlines that are diverted into the hyporheic zone before returning to the channel. The subgrid model is written in a computationally advantageous Lagrangian form with hyporheic age replacing the hyporheic travel distance. In the paper, we summarized implementation in the integrated surface/subsurface hydrology modeling system Advanced Terrestrial Simulator (ATS).},

  doi          = {10.12769/1785972},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Fri Jun 04 00:00:00 EDT 2021},

  month        = {Fri Jun 04 00:00:00 EDT 2021}

}

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DOI: https://doi.org/10.12769/1785972

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