The case for integrated catchment management has been well made and has become a core part of ini... more The case for integrated catchment management has been well made and has become a core part of initiatives such as the EC Water Framework Directive. Most water and environmental professionals expect that integrated modelling will take a necessary role in decision support for catchment management, in both planning and operations. Indeed, there is a common assumption that such modelling exists
Environmental processes and interactions have always been a modelling challenge not only because ... more Environmental processes and interactions have always been a modelling challenge not only because of their complexity but also because they usually demand an integrated analysis that can be achieved only by interlinking domain-specific and case-tailored models. However, the scientific community has reached a general consensus that no single model or modelling system can represent adequately the full range of these
The US National Weather Service developed the River Forecast System (NWSRFS) since the 1970s as t... more The US National Weather Service developed the River Forecast System (NWSRFS) since the 1970s as the platform for performing hydrologic forecasts. The system, originally developed for the computers of that era, was optimized for speed of execution and compact and fast data storage and retrieval. However, with modern computers those features became less of a driver, and, instead, the ability
ABSTRACT Management issues in many sectors of society demand integrated analysis that can be supp... more ABSTRACT Management issues in many sectors of society demand integrated analysis that can be supported by integrated modelling. Since all-inclusive modelling software is difficult to achieve, and possibly even undesirable, integrated modelling requires the linkage of individual models or model components that address specific domains. Emerging from the water sector the OpenMI has, been developed with the purpose of being the glue that can link together model components from various origins. The OPenMI Provides a standardized interface to define, describe and transfer data on a time basis between software components that run simultaneously, thus supporting systems where feedback between the modelled processes is necessary in order to achieve physically sound results. The OpenMI allows the linking of models with different spatial and temporal representations: for example, linking river models and groundwater models, where the river model typically uses a one-dimensional grid and a short timestep and the groundwater model uses a two- or three-dimensional grid and a longer timestep. The OpenMI is designed to accommodate the easy migration of existing modelling systems, since their re-implementation may not be economically feasible due to the large investments that have been put into the development and testing of these systems.
... A modified Julian date represents the number of days since midnight 17 November 1858 Universa... more ... A modified Julian date represents the number of days since midnight 17 November 1858 Universal Time on the Julian calendar. Page 4. 40 JB Gregersen et al.: OpenMI: the essential concepts and their implications for legacy software Fig. ...
The case for integrated catchment management has been well made and has become a core part of ini... more The case for integrated catchment management has been well made and has become a core part of initiatives such as the EC Water Framework Directive. Most water and environmental professionals expect that integrated modelling will take a necessary role in decision support for catchment management, in both planning and operations. Indeed, there is a common assumption that such modelling exists
Environmental processes and interactions have always been a modelling challenge not only because ... more Environmental processes and interactions have always been a modelling challenge not only because of their complexity but also because they usually demand an integrated analysis that can be achieved only by interlinking domain-specific and case-tailored models. However, the scientific community has reached a general consensus that no single model or modelling system can represent adequately the full range of these
The US National Weather Service developed the River Forecast System (NWSRFS) since the 1970s as t... more The US National Weather Service developed the River Forecast System (NWSRFS) since the 1970s as the platform for performing hydrologic forecasts. The system, originally developed for the computers of that era, was optimized for speed of execution and compact and fast data storage and retrieval. However, with modern computers those features became less of a driver, and, instead, the ability
ABSTRACT Management issues in many sectors of society demand integrated analysis that can be supp... more ABSTRACT Management issues in many sectors of society demand integrated analysis that can be supported by integrated modelling. Since all-inclusive modelling software is difficult to achieve, and possibly even undesirable, integrated modelling requires the linkage of individual models or model components that address specific domains. Emerging from the water sector the OpenMI has, been developed with the purpose of being the glue that can link together model components from various origins. The OPenMI Provides a standardized interface to define, describe and transfer data on a time basis between software components that run simultaneously, thus supporting systems where feedback between the modelled processes is necessary in order to achieve physically sound results. The OpenMI allows the linking of models with different spatial and temporal representations: for example, linking river models and groundwater models, where the river model typically uses a one-dimensional grid and a short timestep and the groundwater model uses a two- or three-dimensional grid and a longer timestep. The OpenMI is designed to accommodate the easy migration of existing modelling systems, since their re-implementation may not be economically feasible due to the large investments that have been put into the development and testing of these systems.
... A modified Julian date represents the number of days since midnight 17 November 1858 Universa... more ... A modified Julian date represents the number of days since midnight 17 November 1858 Universal Time on the Julian calendar. Page 4. 40 JB Gregersen et al.: OpenMI: the essential concepts and their implications for legacy software Fig. ...
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