Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Spatially explicit multimedia fate models for pollutants in Europe: State of the art and perspectives
Year:2010
Research Areas
  • Water protection,
  • Hydrology
Information
Abstract
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).
International
Si
JCR
Si
Title
SCIENCE OF THE TOTAL ENVIRONMENT
ISBN
0048-9697
Impact factor JCR
2,905
Impact info
Volume
408
10.1016j/scitotenv.2009.10.046
Journal number
From page
3817
To page
3830
Month
ENERO
Ranking
Participants
  • Autor: María Pilar Vizcaíno Martínez (UPM)
  • Participante: Alberto Pistocchi (JRC)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Hidrobiología
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)