Developing an improved user interface for a physically-based stream solute transport model

P. V. Femeena, I. Chaubey, A. Aubeneau, S. K. McMillan, P. D. Wagner, N. Fohrer

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

There is a growing need to address water pollution that demands advanced tools to predict the fate and transport of water quality constituents. Existing stream solute transport models use simple first-order kinetics to evaluate nutrient loss, however these ignore biochemical reactions and lack a user-friendly interface. To address this shortcoming, we integrated the One-dimensional Transport with Inflow and Storage (OTIS) model and the Enhanced Stream Water Quality Model (QUAL2E) and developed an improved interface for a physically-based solute transport model. With background algal concentration as the only calibration parameter, a generalized model was developed and evaluated. The new model performed reasonably well in predicting nutrient uptake of newly collected experimental data and published data from 32 other datasets (R2 = 0.76, NSE = 0.47 and Percent Bias = −4.3%). Inclusion of biochemical reactions from QUAL2E improves model confidence and provides options for incorporating actual process-based data which is unfeasible in existing first-order decay-based models.

Original languageEnglish (US)
Article number104715
JournalEnvironmental Modelling and Software
Volume129
DOIs
StatePublished - Jul 2020

All Science Journal Classification (ASJC) codes

  • Software
  • Environmental Engineering
  • Ecological Modeling

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