engleski

A Lagrangian model of long-range transport of sulphur with the diurnal variations of some model parameters

A Lagrangian receptor-oriented one-layer model has been developed in order to simulate a synoptic-scale transport of airbone sulphur on a daily basis. The mixing height, transformation rate of sulphur dioxide to particulate sulphate, dry deposition velocites, and wet deposition rates for both pollutants were assumed to vary diurnally, depending on meteorological conditions. The model was tested for the sulphur dioxide and particulate sulphate data measured at nine and seven measuring sites, respectively. Daily mean calculated concentrations of both pollutants were generally higher than observed values for the test period. Both short-and long-term concentrations were predicted better for sulphur dioxide than for particulate sulphate. In application of the model to real data, problems arose due to incomplete input of meteorological data (particulary in trajectory calculations).

long-range transport; sulphur; lagrangian model

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