Affiliation:
1. GKSS Research Centre, Institute for Coastal Research, Geesthacht, Germany
Abstract
Abstract
Into the Community Multiscale Air Quality modeling system (CMAQ) that is widely used for simulating the transport and fate of air pollutants, a new module was inserted that accounts for the partitioning of semivolatile organic compounds—in particular, polycyclic organic hydrocarbons (PAHs)—between the gaseous and the particulate phases. This PAH version of CMAQ can at this time be applied to substances that are predominantly associated with particles and can be assumed to be inert, as is the case for benzo(a)pyrene [B(a)P]. The model was set up for Europe on a grid with 54-km cell width with a nest of 18-km gridcell width located around the North Sea to simulate ambient air concentrations and depositions of B(a)P in January, April, July, and October 2000. To evaluate the quality of the simulation results, daily and monthly mean concentrations were compared with measurements from six monitoring stations. The typical ratio of modeled to measured values is circa 4 (median), which—with respect to both measurement and simulation uncertainties and problems involved when comparing measurements with simulations—proved that the PAH version of CMAQ is suitable to simulate the fate and transport of B(a)P over Europe and can serve as a starting point for models for other PAHs that additionally consider degradation.
Publisher
American Meteorological Society
Reference37 articles.
1. Aas, W., and A.Hjellbrekke, 2003: Heavy metals and POP measurements, 2001. Chemical Co-ordinating Centre of EMEP (CCC), Norwegian Institute for Air Research, EMEP/CCC Rep. 1/2003, 114 pp.
2. Measurement of polycyclic aromatic hydrocarbons associated with size-segregated atmospheric aerosols in Massachusetts.;Allen;Environ. Sci. Technol.,1996
3. Phase distribution and particle size dependency of polycyclic aromatic hydrocarbons in the urban atmosphere.;Baek;Chemosphere,1991
4. Bioaccumulation of polycyclic aromatic compounds: 1. Bioconcentration in two marine species and in semipermeable membrane devices during chronic exposure to dispersed crude oil.;Baussant;Environ. Toxicol. Chem.,2001
5. The regional particulate model. 1. Model description and preliminary results.;Binkowski;J. Geophys. Res.,1995
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