نتایج جستجو برای: water quality modeling

تعداد نتایج: 1606052  

Journal: :international journal of environmental research 0
s.a. mirbagheri department of civil engineering, k.n.toosi university of technology, tehran, iran s.a. sadrnejad department of civil engineering, k.n.toosi university of technology, tehran, iran s.a. hashemi monfared department of civil engineering, k.n.toosi university of technology, tehran, iran

phytoplankton and zooplankton concentrations in pishin reservoir are predicted employing a three-dimensional numerical model in this paper. modeling is performed using a numerical model based on mass transport equation. advection, diffusion and source/sink processes are considered as separate subroutines for predicting the concentrations of phytoplankton and zooplankton in the reservoir. finite...

Journal: :Journal of environmental quality 2017
Karen R Ryberg

Attribution of the causes of trends in nutrient loading is often limited to correlation, qualitative reasoning, or references to the work of others. This paper represents efforts to improve causal attribution of water-quality changes. The Red River of the North basin provides a regional test case because of international interest in the reduction of total phosphorus loads and the availability o...

Journal: :IOP Conference Series: Earth and Environmental Science 2021

2006
Jerzy W. Rozenblit Piotr L. Jankowski

This paper proposes a new approach to simulation modeling of natural systems in the context of water quality modeling in streams affected by point source pollution. The approach has a potential for application to other domains of natural resource modeling. Its conceptual basis is knowledge-based simulation and systems analysis. In the approach presented in this paper, a stream or its section is...

2014
Catherine L. Kling Yiannis Panagopoulos Adriana Valcu Philip W. Gassman Sergey Rabotyagov Todd Campbell Mike White Jeffrey G. Arnold Raghavan Srinivasan Manoj K. Jha Jeff Richardson R. Eugene Turner Nancy Rabalais

In this paper, we discuss the importance of developing integrated assessment models to support the design and implementation of policies to address water quality problems associated with agricultural pollution. We describe a new modeling system, LUMINATE, which links land use decisions made at the field scale in the Upper Mississippi, Ohio, and Tennessee basins through both environmental and hy...

2014
James D. Bowen David N. Perry Colin D. Bell

A stormwater runoff model based on the Soil Conservation Service (SCS) method and a finite-volume based water quality model have been developed to investigate the use of Simulink for use in teaching and research. Simulink, a MATLAB extension, is a graphically based model development environment for system modeling and simulation. Widely used for mechanical and electrical systems, Simulink has h...

Journal: :American Journal of Engineering and Applied Sciences 2018

Journal: :PLOS water 2022

Wildfires are a recurring hazard in forested catchments representing major threat to water security worldwide. impacts on quality have been thoroughly addressed by the scientific community through field studies, laboratory experiments, and, lesser extent, use of hydrological models. Nonetheless, models important tools assess on-site and off-site wildfires provide basis for post-fire land manage...

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