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Uncertainty In Quali-Quantitative Response Of A Natural Catchment On A Daily Basis, A. Candela, G. Aronica, G. Viviani
Uncertainty In Quali-Quantitative Response Of A Natural Catchment On A Daily Basis, A. Candela, G. Aronica, G. Viviani
International Congress on Environmental Modelling and Software
Water quality impacts due to non-point source pollution can be significant particularly in environmentally sensitive areas. They may, however, be difficult to quantify, since the magnitude is heavily influenced by climatic, geomorphologic, lithologic and pedologic characteristics. A conceptual model for continuous daily simulation is proposed to reproduce the quali-quantitative response of a Sicilian catchment. Short-term water quality monitoring is necessary to assess the hydrological response of catchments characterised by hot dry summers and rainfalls with short duration and high intensity. The quantitative sub-model comprises two modules: a non linear loss model, to transform total rainfall in effective rainfall, which involves …
Sensitivity Analysis Of A Network-Based, Catchment- Scalewater-Quality Model, J. P. Norton, Lachlan T. H. Newham, F. T. Andrews
Sensitivity Analysis Of A Network-Based, Catchment- Scalewater-Quality Model, J. P. Norton, Lachlan T. H. Newham, F. T. Andrews
International Congress on Environmental Modelling and Software
Careful consideration of the uncertainties and sensitivities associated with model outputs is essential when critical decisions are made on the basis of such results. Consideration of uncertainty is particularly important in the context of natural resource management, where models are often used to tackle complex and conflicting issues across multiple scales, as is the case in evaluating management options to reduce surface water pollution. This paper describes an analysis of uncertainty in the catchment-scale integrated hydrologic, economic, stream sediment and nutrient export model known as CatchMODS. The paper briefly describes the linked components of CatchMODS and its application in the …
Introducing River Modelling In The Implementation Of The Dpsir Scheme Of The Water Framework Directive, Stefano Marsili-Libelli, Francesco Betti, Susanna Cavalieri
Introducing River Modelling In The Implementation Of The Dpsir Scheme Of The Water Framework Directive, Stefano Marsili-Libelli, Francesco Betti, Susanna Cavalieri
International Congress on Environmental Modelling and Software
In Italy the National Environmental Protection Agency (ANPA) is about to adopt the Drivers- Pressures-States-Impacts-Responses (DPSIR) model introduced by the EC Water Framework Directive (WFD). This paper reassess the current definitions of Indicators in the light of the WFD, proposes the design of modular procedures and computational practices to determine the most significant State indicators, integrates the QUAL2E water quality model for the generation of quality data to assess differing DPSIR scenarios, with the final aim to produce an integrated software, partly based on Excel and partly on QUAL2E, whereby current quality data can be used to generate quality scenarios …
Cellular Automata Modelling Of Seagrass In The Orbetello Lagoon, Stefano Marsili-Libelli, E. Giusti
Cellular Automata Modelling Of Seagrass In The Orbetello Lagoon, Stefano Marsili-Libelli, E. Giusti
International Congress on Environmental Modelling and Software
This paper describes the evolution in time and space of wigeongrass (Ruppia maritima) meadows in the Orbetello lagoon, in central Italy, where the control of the submerged vegetation, with a critical coexistence between macroalgae and macrophytes, is the key management problem. While macroalgae are liable to cause dystrophic crises, macrophytes oxygenate and stabilise the sediment and thus control the nutrient flux into the water. This model was developed for the Orbetello Lagoon Managerial Office to predict the development of both groups and test the actions to favour macrophytes over macroalgae, in the context of a decision support system. A previous …