Memorias de investigación
Artículos en revistas:
Spatially explicit multimedia fate models for pollutants in Europe: State of the art and perspectives
Año:2010
Áreas de investigación
  • Protección de las aguas,
  • Hidrología
Datos
Descripción
A review by Hollander et al. (in preparation), discusses the relative potentials, advantages and shortcomings of spatial and non spatial models of chemical fate, highlighting that spatially explicit models may be needed for specific purposes. The present paper reviews the state of the art in spatially explicit chemical fate and transport modeling in Europe. We summarize the three main approaches currently adopted in spatially explicit modeling, namely (1)multiple boxmodels, (2) numerical polutions of simultaneous advection¿dispersion equations (ADE) in air, soil andwater, and (3) the development ofmeta-models. As all three approaches experience limitations,we describe in further detail geographic information system (GIS)-based modeling as an alternative approach allowing a simple, yet spatially explicit description of chemical fate. We review the input data needed, and the options available for their retrieval at the European scale. We also discuss the importance of, and limitations in model evaluation. We observe that the high uncertainty in chemical emissions and physico-chemical behavior in the environment make realistic simulations difficult to obtain. Thereforewe envisage a shift in model use from process simulation to hypothesis testing, in which explaining the discrepancies between observed and computed chemical concentrations in the environment makes importance over prediction per se. This shift may make advantage of using simple models in GISwith residual uses of complex models for detailed studies. It also calls for tighter joint interpretation ofmodels and spatially distributedmonitoring datasets, and more refined spatial representation of environmental drivers such as landscape and climate variables, and better pemission estimates. In summary, we conclude that the problem is not ¿how to compute¿ (i.e. emphasis on numerical methods, spatial/temporal discretization, quantitative uncertainty and sensitivity analysis¿) but ¿what to compute¿ (i.e. emphasis on spatial distribution of emissions, and the depiction of appropriate spatial patterns of environmental drivers).
Internacional
Si
JCR del ISI
Si
Título de la revista
SCIENCE OF THE TOTAL ENVIRONMENT
ISSN
0048-9697
Factor de impacto JCR
2,905
Información de impacto
Volumen
408
DOI
10.1016j/scitotenv.2009.10.046
Número de revista
Desde la página
3817
Hasta la página
3830
Mes
ENERO
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Hidrobiología