An official website of the United States government.

We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Environmental Modeling Community of Practice

Model Performance Evaluation and Scenario Analysis (MPESA) Tutorial

Abstract

This tool consists of two parts: model performance evaluation and scenario analysis (MPESA). The model performance evaluation consists of two components: model performance evaluation metrics and model diagnostics. These metrics provide modelers with statistical goodness-of-fit measures that capture magnitude only, sequence only, and combined magnitude and sequence errors. The performance measures include error analysis, coefficient of determination, Nash-Sutcliffe efficiency, and a new weighted rank method. For HSPF users, this tool replaces the functionalities of the outdated GenScn (Generation and Analysis of Simulation Scenarios) program.

Citation

Mohamoud Y.M. Model Performance Evaluation and Scenario Analysis (MPESA) Tutorial.
US EPA Office of Research and Development, Washington DC, EPA/600/B-16/080, 2016

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.