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Towards A User-Oriented Design Of A Dss For Integrated River-Basin Management: The Elbe Dss Prototype, Jean-Luc De Kok, Sebastian Kofalk
Towards A User-Oriented Design Of A Dss For Integrated River-Basin Management: The Elbe Dss Prototype, Jean-Luc De Kok, Sebastian Kofalk
International Congress on Environmental Modelling and Software
The problems faced in the German part of the Elbe catchment range from poor navigation conditions and flooding vulnerability to a need for nature restoration in the floodplains. A variety of river engineering works such as large-scale dike shifting, channel dredging, and large-scale retention are in a planning or implementation stage. Usually the initiative for such measures is taken from a local or sectoral point of view. Therefore, it is not always clear how different measures will interact with each other, nor how their effects influence the natural conditions in the floodplains. In order to examine different strategies for sustainable …
Practical Sensitivity And Uncertainty Analysis Techniques Applied To Agricultural System Models, James C. Ascough Ii
Practical Sensitivity And Uncertainty Analysis Techniques Applied To Agricultural System Models, James C. Ascough Ii
International Congress on Environmental Modelling and Software
A practical evaluation framework is presented for analysis of two complex, process-based agricultural system models, WEPP and RZWQM. The evaluation framework combines sensitivity analysis and the uncertainty analysis techniques of first order error analysis (FOA) and Monte Carlo simulation with Latin Hypercube Sampling (LHS). WEPP model runoff, soil loss, and corn (Zea Mays L.) yield output responses in the form of expected values and error variances were determined to illustrate model prediction uncertainty. Sensitivity analysis results show the WEPP model response for runoff to be most sensitive to effective hydraulic conductivity and soil parameters used in the crusting factor adjustment. …
Enriching Software Model Interfaces Using Ontology-Based Tools, Ioannis N. Athanasiadis, Andrea-Emilio Rizzoli, Marcello Donatelli, Laura Carlini
Enriching Software Model Interfaces Using Ontology-Based Tools, Ioannis N. Athanasiadis, Andrea-Emilio Rizzoli, Marcello Donatelli, Laura Carlini
International Congress on Environmental Modelling and Software
Common practice has proven that software implementations of environmental models are seldom reused by broader communities or in different modelling frameworks. One of the reasons for this situation is the poor semantics of model interfaces. Model interfaces describe a critical amount of the modellers’ knowledge, but their software implementations fail to represent the complexity of model assumptions in software terms. In this paper, we present an ontology-driven approach that aims to enrich software model interfaces with advanced semantics. A generic ontology for defining environmental model variables has been developed along with two families of tools for supporting the modellers’ community …
Decision Support For Nitrogen Management In Tile-Drained Agriculture, P. Heilman, R. W. Malone, L. Mac, Jerry L. Hatfield, L.R. Ahuja, J. Ayen, K. Boyle, R. Kanwar
Decision Support For Nitrogen Management In Tile-Drained Agriculture, P. Heilman, R. W. Malone, L. Mac, Jerry L. Hatfield, L.R. Ahuja, J. Ayen, K. Boyle, R. Kanwar
International Congress on Environmental Modelling and Software
Farmers will adopt alternative management systems to improve water quality more readily if they understand how those management alternatives affect the release of contaminants, crop yields, and ultimately, their net income. We propose a method to address these issues by integrating observed data from field experiments, a comprehensive simulation model, review by local experts, and application through a decision support system by technically trained conservationists. An example for reducing nitrogen loading from tile-drained corn and soybean production in Iowa demonstrates the approach. Fourteen years of observed data from 30 research plots on the Northeast Research and Demonstration Farm near Nashua, …
Ten Steps Applied To Development And Evaluation Of Process-Based Biogeochemical Models Of Estuaries, Barbara J. Robson, Ian T. Webster, David P. Hamilton, Terence Chan, Teemu Kokkonen
Ten Steps Applied To Development And Evaluation Of Process-Based Biogeochemical Models Of Estuaries, Barbara J. Robson, Ian T. Webster, David P. Hamilton, Terence Chan, Teemu Kokkonen
International Congress on Environmental Modelling and Software
The procedures involved in model development may be set out ten-step process, beginning with defining the purpose of the model and ending with evaluation of the appropriateness and utility of the completed model. This process, recently outlined by Jakerman et al. [2006], is often iterative as model development is a continuous process that refines and improves the indented capacity of the model. Here, we show how the ten steps of model development are relevant to process-based biogeochemical modeling of aquatic systems, using examples from two case studies: a model of phytoplankton succession and nutrient concentrations in the Swan-Canning Estuary (Western …
Assessment Of Ecological State Of Surface Waters In Arrow Project: Robust Multivariate Predictive Models, J. Ráček, Jiri Jarkovsky, Danka Nemethova, P. Brabec
Assessment Of Ecological State Of Surface Waters In Arrow Project: Robust Multivariate Predictive Models, J. Ráček, Jiri Jarkovsky, Danka Nemethova, P. Brabec
International Congress on Environmental Modelling and Software
The ARROW (www.cba.muni.cz/arrow/eng - Assessment and Reference Reports of Water monitoring) project is the project of implementation of EU Water Framework Directive in the monitoring of surface waters of the Czech Republic and covers all aspects of this problem from data sampling to informatics solution (focusing on the ecostat). The project is based on long term development of this field in the Czech Republic and it is carried out under the supervision of the Ministry of the Environment of the CR. The important part of the ARROW project is the development and implementation of a Czech approach to the evaluation …
Systematic Simplification Of Mechanistic Models, Neil Crout, Glen Cox, James Gibbons
Systematic Simplification Of Mechanistic Models, Neil Crout, Glen Cox, James Gibbons
International Congress on Environmental Modelling and Software
Models of environmental systems are often complex, reflecting the complexity of the systems they try and describe. This complexity is difficult to manage and, especially in the face of limited observed data, there is a risk that models become over-parameterised with the result that predictions are less reliable than they need be. An approach to investigating the influence of model complexity on prediction accuracy is to compare the performance of alternative (simpler) model formulations. However this is difficult to achieve in practice as the process of simplification can be time-consuming with the consequence that only a few alternative formulations can …
Environmental Cartographic Models For The Region Of Bregare Paleoseismic Phenomena, Moesian Platform (Bulgaria), Dora Angelova
Environmental Cartographic Models For The Region Of Bregare Paleoseismic Phenomena, Moesian Platform (Bulgaria), Dora Angelova
International Congress on Environmental Modelling and Software
The Bregare dislocation was a result of the impulse event a block was torn away. The anomalous relief deformations and tectonic discordance of greatest intensity provide evidence that the paleoearthquakes took place at the Pliocene-Quaternary boundary, between the Pleistocene, Pleistocene-Holocene boundary and the Holocene. It exerted impact on the terrain around the Oryahovitsa and Bregare villages and disturbed the highly raised Neogene base in the range of the Iskar River flood terrace. The paleoearthquakes were catastrophic and disturbed the watersheds and the river terraces, changed the directions of river runoff, caused the subsidence and destruction of karst caverns, etc. Secondary …
Estimation Of Monthly Distribution Of Debris-Flow Events For The Territory Of The Usa (Using The Distribution Model For Periods Of Debris-Flow Danger), N. Belaya
International Congress on Environmental Modelling and Software
The present work illustrates calculation results of monthly distribution of debris-flow events for the territory of the USA according to the model for the periods of debris-flow danger fully described in the paper by N. Belaya (Belaya 2003). The model based on the dependency of the debris-flow regime on climate parameters has been developed in order to assess the monthly distribution of debris-flow events both for poorly explored mountain regions of the world and for scenarios of climate changes. It considers rainfall initiated debris-flows in accordance with the debris-flow genetic classification of V. F. Perov. The following small-scale maps and …
Features Of Advanced Decision Support Systems For Environmental Studies, Management, And Regulation, Edwin Roehl, Ruby Daamen, Paul A. Conrads
Features Of Advanced Decision Support Systems For Environmental Studies, Management, And Regulation, Edwin Roehl, Ruby Daamen, Paul A. Conrads
International Congress on Environmental Modelling and Software
Natural resource managers and users face difficult challenges when managing the interactions between natural and man-made systems. Even though the collective interests and computer skills of the community of managers, scientists, and other stakeholders are quite varied, there is an overarching need for equal access by all to the scientific knowledge needed to make the best possible decisions. A decision support system (DSS) can meet this need. DSS have been described as, “computer-based systems (for) helping decision-makers to solve various semi structured and unstructured problems involving multiple attributes, objectives, and goals… Historically, the majority of DSSs have been either computer …
Bridging The Design-Use Gap For Dss In Environmental Policy And Practice., K. B. Matthews, M. G. Hutchins, G. Hill
Bridging The Design-Use Gap For Dss In Environmental Policy And Practice., K. B. Matthews, M. G. Hutchins, G. Hill
International Congress on Environmental Modelling and Software
Drawing on the literature of agricultural decision support systems (DSS) and experience in developing tools for policy support and evaluation, this paper argues that while in the main such tools have failed to live up to expectations it may be that the expectations were unrealistic. The design-use gap of DSS for environmental management is partially the inevitable cycle of expectations (unbelief-euphoria-disappointment and maturity or abandonment) experienced by any innovation. The environmental problems facing land managers and society are dauntingly complex. Yet more or better quality information does not inevitably lead to better management. Many of the issues that face land-use …
Supporting Environmental And Energy Decisions Through An Open Software Structure, Giorgio Guariso, Matteo Baracani
Supporting Environmental And Energy Decisions Through An Open Software Structure, Giorgio Guariso, Matteo Baracani
International Congress on Environmental Modelling and Software
Public participation to environmental planning and management decisions, as suggested by localAgenda 21 processes, can be supported by software tools developed with a cyclic interaction with all thestakeholders and simple enough to be quickly operated by a large set of heterogeneous users. This also helpspreventing their rapid aging and their excessive dependence on changing technologies. We experimented thedevelopment of such software tools using an Office type environment to store data, analyse, andgeographically represent the effects of alternative decisions and html files to help utilizing the software anddistributing the information over the Internet. Two different applications are reported in the paper. …
Resolving Model Parameter Values From C And N Stock Measurements In A Wide Range Of Tropical Mature Forests Using Nonlinear Inversion, Shuguang Liu, Pamela Anderson, Guoyi Zhou, Boone Kauffman, Flint Hughes, David Schimel, Vicente Watson, Joseph Tosi
Resolving Model Parameter Values From C And N Stock Measurements In A Wide Range Of Tropical Mature Forests Using Nonlinear Inversion, Shuguang Liu, Pamela Anderson, Guoyi Zhou, Boone Kauffman, Flint Hughes, David Schimel, Vicente Watson, Joseph Tosi
International Congress on Environmental Modelling and Software
Objectively assessing the performance of a model and deriving model parameter values from observations are critical and challenging in landscape to regional modeling. In this paper, we applied a nonlinear inversion technique to calibrate the ecosystem model CENTURY against carbon and nitrogen stock measurements collected from 33 mature tropical forest sites in seven life zones in Costa Rica. Net primary productivity from the MODIS, C and N stocks in aboveground live biomass, litter, coarse woody debris (CWD), and in soils were used to calibrate the model. To investigate the resolution of available observations on the number of adjustable parameters, inversion …
Environmental Policy Aid Under Uncertainty, J. Myšiak, J. D. Brown
Environmental Policy Aid Under Uncertainty, J. Myšiak, J. D. Brown
International Congress on Environmental Modelling and Software
Uncertainty pervades all aspects of environmental policy making. Numerous typologies and techniques have been developed to conceptualise, classify, assess (qualitatively and quantitatively), propagate, control, reduce and communicate uncertainty. Such assessments are a necessary but insufficient condition for reducing uncertainty in environmental decision making. In this paper we discuss how uncertainty is translated into decisions. Since this entails numerous value judgements and trade-offs which are sensitive to how policy problems are framed, we argue that perceptions of uncertainty cannot be viewed independently of the (quality of) the policy process that it intends to inform. Thus, uncertainty management should not be limited …
Uncertainty In Environmental Decision-Making: Issues, Challenges And Future Directions, Holger R. Maier, James C. Ascough Ii
Uncertainty In Environmental Decision-Making: Issues, Challenges And Future Directions, Holger R. Maier, James C. Ascough Ii
International Congress on Environmental Modelling and Software
Environmental decision-making is complicated by the complexity of natural systems and the often competing needs of multiple stakeholders. Modelling tools are often used to assist at various stages of the environmental decision-making process. If such models are to provide effective decision support, the uncertainties associated with all aspects of the decision-making process need to be taken into account explicitly. However, as models become more complex in order to better represent integrated environmental, social and economic systems, achieving this goal becomes more difficult. Some of the important issues that need to be addressed in relation to the incorporation of uncertainty in …
Regionalization Of Ihacres Model Parameters For In-Tegrated Assessment Across The Lake Erie, Northern Ohio Usa Basin, Richard M. Anderson, Jonathan L. Goodall
Regionalization Of Ihacres Model Parameters For In-Tegrated Assessment Across The Lake Erie, Northern Ohio Usa Basin, Richard M. Anderson, Jonathan L. Goodall
International Congress on Environmental Modelling and Software
The IHACRES model is being applied in a regionalization approach to develop streamflow predic-tions within the region of Northern Ohio, U.S.A. that drains into Lake Erie, located on the border between the U.S. and Canada. The approach to-date is based on independent univariate regressions of model parameters on watershed attributes for a collection of 11 watersheds. Anderson et al. (2005) used one of these regression relationships to represent possible effects of declining forest cover on streamflow, but did not obtain regional models for the parameters of the routing model of IHACRES. Here we apply and “validate” a regionaliza-tion approach to …
A Model For Investment Decision Support Based On Multicriteria Analysis, Irina Glazyrina
A Model For Investment Decision Support Based On Multicriteria Analysis, Irina Glazyrina
International Congress on Environmental Modelling and Software
The conventional implementation of polluter pays principle (PPP) in many countries is based on the use of an environmentaltax, which is determined proportionally to the amount of emissions of the polluting substances. Using aspecific mathematical model this study shows that this practice is not adequate for the real negative impact if thepollutant accumulates to a stock in the environment. Moreover, in many cases there is a danger of an unavoidableconflict between the interests of society as a whole and the interests of private business, generated by these proceduresof PPP implementation. This paper also presents a mathematical formula (obtained as an …
Environmental Cartographic Models For The Region Of Bregare Paleoseismic Phenomena, Moesian Platform (Bulgaria), Dora Angelova
Environmental Cartographic Models For The Region Of Bregare Paleoseismic Phenomena, Moesian Platform (Bulgaria), Dora Angelova
International Congress on Environmental Modelling and Software
The Bregare dislocation was a result of the impulse event a block was torn away. The anomalous relief deformations and tectonic discordance of greatest intensity provide evidence that the paleoearthquakes took place at the Pliocene-Quaternary boundary, between the Pleistocene, Pleistocene-Holocene boundary and the Holocene. It exerted impact on the terrain around the Oryahovitsa and Bregare villages and disturbed the highly raised Neogene base in the range of the Iskar River flood terrace. The paleoearthquakes were catastrophic and disturbed the watersheds and the river terraces, changed the directions of river runoff, caused the subsidence and destruction of karst caverns, etc. Secondary …
Logisnet: A Tool For Multimethod, Multilayer Slope Stability Analysis, G. Legorreta Paulin, M. I. Bursik
Logisnet: A Tool For Multimethod, Multilayer Slope Stability Analysis, G. Legorreta Paulin, M. I. Bursik
International Congress on Environmental Modelling and Software
Shallow landslides or slope failures have been studied from several points of view. In particular, numerous methods have been developed to assess slope stability. However, little work has been done on the systematic comparison of different techniques, and the incorporation of vertical contrasts of geotechnical properties in multiple soil layers. In this research, stability is modeled by using LOGISNET, an acronym for logistic regression, Geographic Information System and Neural Network. LOGISNET is a project of which the main purpose is to provide government planners and decision makers a tool to assess landslide susceptibility. The system is fully operational for models …
Conceptual Modelling Of Individual Hru’S As A Trade-Off Between Bottom-Up And Top-Down Modelling, A Case Study., R. Van Den Bos, L. Hoffmann, J. Juilleret, P. Matgen, L. Pfister
Conceptual Modelling Of Individual Hru’S As A Trade-Off Between Bottom-Up And Top-Down Modelling, A Case Study., R. Van Den Bos, L. Hoffmann, J. Juilleret, P. Matgen, L. Pfister
International Congress on Environmental Modelling and Software
Widely available geological and topographical maps contain a high level of potential information on the runoff behaviour on meso-scale (10-1000 km2). They can be used to identify major storage volumes or to estimate the reactivity of rainfall-runoff processes. Within this case study on the Alzette river basin in the Grand-Duchy of Luxembourg, basic characteristics like the location of sources, the spatial distribution of soils and a qualitative interpretation of the permeability of geological formations were used to roughly estimate the extension of hydrological similarly reacting areas (so-called Hydrological Response Units, HRU’s). With discharge data of basins within or surrounding the …
Moira-Plus: A Decision Support System For The Management Of Complex Fresh Water Ecosystems Contaminated By Radionuclides And Heavy Metals, Luigi Monte, Lars Håkanson, D. Hofman, John Brittain, Eduardo Gallego, Antonio Jimenez, Giacomo Angeli
Moira-Plus: A Decision Support System For The Management Of Complex Fresh Water Ecosystems Contaminated By Radionuclides And Heavy Metals, Luigi Monte, Lars Håkanson, D. Hofman, John Brittain, Eduardo Gallego, Antonio Jimenez, Giacomo Angeli
International Congress on Environmental Modelling and Software
The accidental release of radioactive substances into the environment leads to the necessity of applying suitable countermeasures for the restoration of the polluted environment. However, despite their obvious benefits, such interventions may result in detrimental effects of economic, ecological and social nature that must be carefully evaluated. MOIRA–PLUS is a PC-based user-friendly, Computerised Decision Support System (CDSS) that helps decision makers to choose optimal countermeasure strategies for different kinds of aquatic ecosystems and contamination scenarios. CDSS MOIRA-PLUS is based on: a) Validated models to evaluate the behaviour of radionuclides in contaminated water bodies and biota and to assess the effect …
Quantifying Uncertainties Associated With Estimates Of Greenhouse Gas Emissions And Removals From Canada’S Managed Forests, Thomas White, Werner Kurz, Graham Stinson
Quantifying Uncertainties Associated With Estimates Of Greenhouse Gas Emissions And Removals From Canada’S Managed Forests, Thomas White, Werner Kurz, Graham Stinson
International Congress on Environmental Modelling and Software
Canada is developing the National Forest Carbon Monitoring Accounting and Reporting System(NFCMARS) to meet international reporting obligations under the United Nations Framework Convention onClimate Change (UNFCCC) and the Kyoto Protocol. The system integrates information about forest area,age and species composition, growth rates, and natural and anthropogenic disturbances in a modelingframework that simulates the forest carbon cycle at stand and landscape scales. The system reports, atregional and national scales, the emissions and removals of greenhouse gases in Canada’s managed forests.Approaches to quantify the uncertainties associated with these estimates are being developed. Thedifficulties associated with meaningfully quantifying uncertainty for national-scale estimates of …
Surface Flows Modelling: Cellular Automata Simulations Of Lava, Debris And Pyroclastic Flows, M. V. Avolio, G. M. Crisci, D. D’Ambrosio, S. Di Gregorio, Giulio Iovine, V. Lupiano, R. Rongo, W. Spataro
Surface Flows Modelling: Cellular Automata Simulations Of Lava, Debris And Pyroclastic Flows, M. V. Avolio, G. M. Crisci, D. D’Ambrosio, S. Di Gregorio, Giulio Iovine, V. Lupiano, R. Rongo, W. Spataro
International Congress on Environmental Modelling and Software
Cellular Automata (CA) are a computational paradigm, a valid alternative to standard methods with differential equations for modelling and simulating complex systems, whose behaviour may be specified in terms of local interactions in a context of discrete time and space. Some surface flows may be approximated to such a type of complex systems. The Empedocles Research Group developed an empirical methodology for modelling this kind of macroscopic phenomena. The CA space for surface flows is divided in hexagonal cells, whose specification (state) describes the physical characteristics (substates) relevant to the evolution of the system and relative to the space portion …
River Flow Simulation Within Ungauged Catchments In Lebanon Using A Semi-Distributed Rainfall-Runoff Model, A. Hreiche, C. Bocquillon, W. Najem
River Flow Simulation Within Ungauged Catchments In Lebanon Using A Semi-Distributed Rainfall-Runoff Model, A. Hreiche, C. Bocquillon, W. Najem
International Congress on Environmental Modelling and Software
Development of methodologies to achieve a priori parameter estimation of hydrological models is fundamental in ungauged basins. This study shows that a semi-distributed physical model can be applied to ungauged watersheds in Lebanon and its parameters can be estimated using physical approach and remote sensing techniques. Most of the Lebanese coastal watersheds are affected by an important seasonal snow cover. The snowmelt contributes up to about two thirds of the total yearly discharge of the catchments. Most snowmelt water infiltrates the limestone and discharges at several karsts springs. A physical model based on the snowmelt mechanisms using the standard energy …
Estimation Of Monthly Distribution Of Debris-Flow Events For The Territory Of The Usa (Using The Distribution Model For Periods Of Debris-Flow Danger), N. Belaya
International Congress on Environmental Modelling and Software
The present work illustrates calculation results of monthly distribution of debris-flow events for the territory of the USA according to the model for the periods of debris-flow danger fully described in the paper by N. Belaya (Belaya 2003). The model based on the dependency of the debris-flow regime on climate parameters has been developed in order to assess the monthly distribution of debris-flow events both for poorly explored mountain regions of the world and for scenarios of climate changes. It considers rainfall initiated debris-flows in accordance with the debris-flow genetic classification of V. F. Perov. The following small-scale maps and …
Experience With A System Dynamics Model In A Prospective Study On The Future Impact Of Ict On Environmental Sustainability, Patrick A. Wäger, Lorenz M. Hilty, Peter Arnfalk, Lorenz Erdmann, James Goodman
Experience With A System Dynamics Model In A Prospective Study On The Future Impact Of Ict On Environmental Sustainability, Patrick A. Wäger, Lorenz M. Hilty, Peter Arnfalk, Lorenz Erdmann, James Goodman
International Congress on Environmental Modelling and Software
To assess the potential impact of ICT on environmental sustainability in the European Union within a time horizon until 2020, we developed a System Dynamics model. In our contribution we make a critical, retrospective evaluation of the model with regard to the requirements and expectations of the project commissioners and of experts involved in the modeling and simulation process. The issues addressed are problem adequacy, validity, transparency, communicability and receptivity of the model. We conclude that modeling approaches that better support a modular model design than System Dynamics does would lead to better results regarding these requirements, and that a …
Integrated Assessment Of Agricultural And Environmental Policies – Towards A Computerized Framework For The Eu (Seamless-If), Martin Van Ittersum, Frank Ewert, Johanna Alkan Olsson, Erling Andersen, Irina Bezlepkina, Floor Brouwer, Marcello Donatelli, Guillermo Flichman, Thomas Heckelei, Lennart Olsson, Alfons Oude Lansink, Andrea-Emilio Rizzoli, Tamme Van Der Wal, Jacques Wery
Integrated Assessment Of Agricultural And Environmental Policies – Towards A Computerized Framework For The Eu (Seamless-If), Martin Van Ittersum, Frank Ewert, Johanna Alkan Olsson, Erling Andersen, Irina Bezlepkina, Floor Brouwer, Marcello Donatelli, Guillermo Flichman, Thomas Heckelei, Lennart Olsson, Alfons Oude Lansink, Andrea-Emilio Rizzoli, Tamme Van Der Wal, Jacques Wery
International Congress on Environmental Modelling and Software
Agricultural systems continuously evolve and are forced to change as a result of a range of global and local driving forces. Agricultural and environmental policies are increasingly designed to contribute to the sustainability of agricultural systems and to enhance contributions of agricultural systems to sustainable development at large. The effectiveness and efficiency of such polices in realizing desired contributions could be greatly enhanced if it were possible to perform ex-ante assessments. The European Commission has recently introduced impact assessment of its policies as an essential step in policy development. This paper presents the design and first prototype of a computerized …
Modelling Lava Flow To Assess Hazard On Mount Etna (Italy). From Geological Data To A Preliminary Hazard Map, E. Bertino, M. L. Damiani, G. Groppelli, G. Norini, B. Aldighieri, S. Borgonovo, F. Comoglio, G. Pasquaré
Modelling Lava Flow To Assess Hazard On Mount Etna (Italy). From Geological Data To A Preliminary Hazard Map, E. Bertino, M. L. Damiani, G. Groppelli, G. Norini, B. Aldighieri, S. Borgonovo, F. Comoglio, G. Pasquaré
International Congress on Environmental Modelling and Software
In this paper we present a systematic approach to the development of the lava flow hazard map forthe Mount Etna, the most important active volcano in Europe. The basic idea is to determine the hazard zonesby simulating the lava flows originated from a number of sample points localized in regions at high densityof vents, called eruption zones. The key choice is the adoption of a probabilistic model for the simulation ofthe lava flow. In the paper we outline the characteristics of the model, called ELFM, and how it has beenvalidated. On the other side, for the determination of the eruption …
Application Of Test-Driven Development Framework For Environmental Software: A Case Study In Long-Term Photosynthetic Process Simulation, Yasuyuki Egashira, Miyuki Shibata, Korekazu Ueyama, Koich Yamada
Application Of Test-Driven Development Framework For Environmental Software: A Case Study In Long-Term Photosynthetic Process Simulation, Yasuyuki Egashira, Miyuki Shibata, Korekazu Ueyama, Koich Yamada
International Congress on Environmental Modelling and Software
In test-driven development, programs for tests are written before coding the main program, andusing software frameworks for support testing, implementation of the program becomes easy by the frequentand low cost feedback of these tests. In this work, application of test-drive development framework forenvironmental software was attempted. As a case study, a simulator for photosynthesis and plant growth wasdeveloped using JUnit framework as a base of testing tool for test-driven development. In developmentphase, test case class which checking all equations in the model is constructed first, using JUnit with someextensions. And afterward, simulator for the model is developed, with the aid …
Preliminary Indications Of The Transferability Of Ihacres Model Parameters In Mountainous Rainfall Driven Rivers, Paola Allamano, David Hutchinson, Paul H. Whitfield
Preliminary Indications Of The Transferability Of Ihacres Model Parameters In Mountainous Rainfall Driven Rivers, Paola Allamano, David Hutchinson, Paul H. Whitfield
International Congress on Environmental Modelling and Software
The IHACRES model has been widely shown to be successful in modelling rainfall-runoff processes in a variety of environments including mountainous regions. Our objective was to determine if landscape features could be used to determine model parameters that could successfully be transferred to ungauged basins and the uncertainty of such estimates be simultaneously assessed. Here we report preliminary results where calibrated model parameters from a variety of mountain watersheds are compared to basin area, drainage density and other attributes derived from digital elevations models. These results indicate that some model parameters exhibit a relation to basin characteristics. However, noise in …