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SimpleBox 2.0: a nested multimedia fate model for evaluating the environmental fate of chemicals

SimpleBox 2.0: een 'genest' multimedia lotgevallen model voor milieu en chemicalieen

Synopsis

SimpleBox is a nested multimedia box model of the 'Mackay type'. The environment is modeled as consisting of a set of well-mixed homogeneous compartments (air, fresh water, sea water, sediments, three soil compartments and two vegetation compartments) in regional, continental and global spatial scales. The model takes emission rates and rate constants for transport and transformation of micropollutants as input and computes steady-state concentrations in the environment as output. SimpleBox is a generic model which can be customised to represent specific environmental situations. In its default setting, the SimpleBox computation represents the behaviour of micropollutants in a regional and continental spatial scale; representing a densely populated Western European region, and the whole of the European Union, respectively. The present version of the model was produced as a starting point for a project aimed at validation of the intended use of the model in harmonisation of environmental quality objectives of air, water, and soil in the Netherlands. SimpleBox 2.0 has also served as a basis for the regional/continental distribution module into the European Union System for Evaluation of Substances (EUSES). This report is meant to provide the technical documentation that is necessary to serve these purposes.
 

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