fundamentals of simulation modeling in the hydrologic sciences: introduction
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Fundamentals of Simulation Modeling in the Hydrologic Sciences: Introduction. Alejandro Flores, Ph.D. Fall 2010. Introduction. What is a model? Why do we need/want to use models in hydrology?. What is a model?. A model is a mathematical abstraction of reality: - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Fundamentals of Simulation Modeling in the Hydrologic Sciences: Introduction](https://reader035.vdocument.in/reader035/viewer/2022081503/56816028550346895dcf2f31/html5/thumbnails/1.jpg)
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Fundamentals of Simulation Modeling in the Hydrologic Sciences:
Introduction
Alejandro Flores, Ph.D.Fall 2010
![Page 2: Fundamentals of Simulation Modeling in the Hydrologic Sciences: Introduction](https://reader035.vdocument.in/reader035/viewer/2022081503/56816028550346895dcf2f31/html5/thumbnails/2.jpg)
Introduction
What is a model? Why do we need/want to use models in hydrology?
![Page 3: Fundamentals of Simulation Modeling in the Hydrologic Sciences: Introduction](https://reader035.vdocument.in/reader035/viewer/2022081503/56816028550346895dcf2f31/html5/thumbnails/3.jpg)
What is a model?
A model is a mathematical abstraction of reality: Requires simplification of processes Often draw analogies between processes and
existing mathematical methods and formulae Often requires “parameterization”
A model is nothing more than a set of equations that collectively represent one or more hypothesis/hypotheses
![Page 4: Fundamentals of Simulation Modeling in the Hydrologic Sciences: Introduction](https://reader035.vdocument.in/reader035/viewer/2022081503/56816028550346895dcf2f31/html5/thumbnails/4.jpg)
What is a model?
A model is NOT… A perfect representation of reality (although
sometime it’s convenient to assume it to be) A substitute for observation
![Page 5: Fundamentals of Simulation Modeling in the Hydrologic Sciences: Introduction](https://reader035.vdocument.in/reader035/viewer/2022081503/56816028550346895dcf2f31/html5/thumbnails/5.jpg)
This is an Airbus A380
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This is a model of an Airbus A380
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This is another model of an A380
![Page 8: Fundamentals of Simulation Modeling in the Hydrologic Sciences: Introduction](https://reader035.vdocument.in/reader035/viewer/2022081503/56816028550346895dcf2f31/html5/thumbnails/8.jpg)
This is another model of an A380
![Page 9: Fundamentals of Simulation Modeling in the Hydrologic Sciences: Introduction](https://reader035.vdocument.in/reader035/viewer/2022081503/56816028550346895dcf2f31/html5/thumbnails/9.jpg)
Yet another model of an A380…
![Page 10: Fundamentals of Simulation Modeling in the Hydrologic Sciences: Introduction](https://reader035.vdocument.in/reader035/viewer/2022081503/56816028550346895dcf2f31/html5/thumbnails/10.jpg)
Just one more for good measure
![Page 11: Fundamentals of Simulation Modeling in the Hydrologic Sciences: Introduction](https://reader035.vdocument.in/reader035/viewer/2022081503/56816028550346895dcf2f31/html5/thumbnails/11.jpg)
So, then…
What do all these models have in common? How do they differ?
What is the purpose of each? Who is the audience? What is the balance between simplicity and fidelity?
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Why do we model in hydrology?
What are some reasons we need to model in hydrology?
What are some tradeoffs between fidelity/realism and simplicity?
Who are our audiences? What are the consequences of inaccuracy for each
audience?