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

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:
ORCiD logo ; ;
Publication Date:
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.
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
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
@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 = {2021},
month = {6}
}