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Water 2016, 8(1), 12;

Integration of a Three-Dimensional Process-Based Hydrological Model into the Object Modeling System

Department of Civil & Environmental Engineering Colorado School of Mines, 14th St., Golden, CO 80401, USA
Department of Informatics, Modeling, Electronics and Systems Engineering University of Calabria, Arcavacata Campus, Arcavacata di Rende 87036, Italy
Department of Civil and Environmental Engineering, Department of Computer Science, Colorado State University, Fort Collins, CO 80523, USA
United State Department of Agriculture, Agricultural Research Service (ARS), Agricultural Systems Research Unit, Fort Collins, CO 80526, USA
Department of Civil, Environmental and Mechanical Engineering, University of Trento, Trento 38123, Italy
Author to whom correspondence should be addressed.
Academic Editor: Kevin Strychar
Received: 22 July 2015 / Revised: 9 October 2015 / Accepted: 24 December 2015 / Published: 2 January 2016
PDF [3672 KB, uploaded 2 January 2016]


The integration of a spatial process model into an environmental modeling framework can enhance the model’s capabilities. This paper describes a general methodology for integrating environmental models into the Object Modeling System (OMS) regardless of the model’s complexity, the programming language, and the operating system used. We present the integration of the GEOtop model into the OMS version 3.0 and illustrate its application in a small watershed. OMS is an environmental modeling framework that facilitates model development, calibration, evaluation, and maintenance. It provides innovative techniques in software design such as multithreading, implicit parallelism, calibration and sensitivity analysis algorithms, and cloud-services. GEOtop is a physically based, spatially distributed rainfall-runoff model that performs three-dimensional finite volume calculations of water and energy budgets. Executing GEOtop as an OMS model component allows it to: (1) interact directly with the open-source geographical information system (GIS) uDig-JGrass to access geo-processing, visualization, and other modeling components; and (2) use OMS components for automatic calibration, sensitivity analysis, or meteorological data interpolation. A case study of the model in a semi-arid agricultural catchment is presented for illustration and proof-of-concept. Simulated soil water content and soil temperature results are compared with measured data, and model performance is evaluated using goodness-of-fit indices. This study serves as a template for future integration of process models into OMS. View Full-Text
Keywords: watershed model; environmental modeling framework; automatic calibration; software integration watershed model; environmental modeling framework; automatic calibration; software integration

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Formetta, G.; Capparelli, G.; David, O.; Green, T.R.; Rigon, R. Integration of a Three-Dimensional Process-Based Hydrological Model into the Object Modeling System. Water 2016, 8, 12.

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