Design and implementation of a general software library for using NSGA-II with SWAT for multi-objective model calibration |
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| Affiliation: | 1. Arcadis, Indianapolis, IN, USA;2. Department of Civil and Environmental Engineering, University of Virginia, Charlottesville, VA, USA;3. Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC, USA;1. Dept. of Agricultural & Rural Eng., Chungnam National University, Daejeon, South Korea;2. Dept. of Construction & Disaster Prevention Eng., Kyungpook National University, Sangju, South Korea;3. International Water Resources Research Institute, Chungnam National University, Daejeon, South Korea;4. Department of Civil Engineering, University of Texas at Arlington, Arlington, USA;1. Laboratory of Hydrology and Water Resources Management, Department of Water Resources and Environmental Engineering, School of Civil Engineering, National Technical University of Athens (NTUA), 5, Iroon Politechniou Street, 15780 Zografou, Athens, Greece;2. Hydroexigiantiki L.S. Lazarides & Co Consulting, 3 Evias Street, 15125 Maroussi, Athens, Greece;3. National Agricultural Research Foundation, Institute of Soil Mapping and Classification, 1 Theofrastos Street, 41335 Larissa, Greece;4. LDK Consultants Engineers & Planners SA, Off 21, Thivaidos Street, 14564 Kifissia, Athens, Greece;5. Consultant Hydrogeologists, Athens, Greece;1. Department of Ecology and Environmental Science, University of Adelaide, Australia;2. South Australian Water Corporation, Australia;1. Department of Agricultural and Biological Engineering, Purdue University, 225 South University Street, West Lafayette, IN, 47907, USA;2. USDA-Agricultural Research Service, National Soil Erosion Research Laboratory, 275 South Russell Street, West Lafayette, IN, 47907, USA;3. Blackland Research and Extension Center, Texas A&M University, 720 East Blackland Road, Temple, TX, 76502, USA;4. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China;1. Odum School of Ecology, University of Georgia, 140 E Green St., Athens, GA 30602, USA;2. School of Forestry and Wildlife Sciences, Auburn University, 602 Duncan Drive, Auburn, AL 36849-5418, USA;1. University of South Carolina, Department of Civil and Environmental Engineering, 300 Main St., Columbia, SC, 29208, USA;2. University of Virginia, Department of Civil and Environmental Engineering, 351 McCormick Road, P.O. Box 400742, Charlottesville, VA, 22904-4742, USA;3. University of Virginia, Department of Computer Science, 85 Engineers Way, P.O. Box 400740, Charlottesville, VA, 22904-4740, USA;4. Utah State University, Department of Civil and Environmental Engineering, 8200 Old Main, Logan, Utah, 84322-8200, USA |
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| Abstract: | Calibrating watershed-scale hydrologic models remains a critical but challenging step in the modeling process. The Soil and Water Assessment Tool (SWAT) is one example of a widely used watershed-scale hydrologic model that requires calibration. The calibration algorithms currently available to SWAT modelers through freely available and open source software, however, are limited and do not include many multi-objective genetic algorithms (MOGAs). The Non-Dominated Sorting Genetic Algorithm II (NSGA-II) has been shown to be an effective and efficient MOGA calibration algorithm for a wide variety of applications including for SWAT model calibration. Therefore, the objective of this study was to create an open source software library for multi-objective calibration of SWAT models using NSGA-II. The design and implementation of the library are presented, followed by a demonstration of the library through a test case for the Upper Neuse Watershed in North Carolina, USA using six objective functions in the model calibration. |
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| Keywords: | Multi-objective calibration Genetic algorithms Watershed modeling SWAT NSGA-II |
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