Abstract
A Lagrangian-type model has been used to quantify long range transport of sulphur over Europe on an annual basis (1974). Basic model assumptions are discussed. Calculated concentrations of sulphur dioxide and paniculate sulphate are compared with observations. The agreement is variable for daily values, but better for annual averages. A sulphur dry deposition pattern for Europe for 1974 is estimated from the calculated annual mean concentration field. A corresponding wet deposition pattern is estimated by an indirect method, in which the annual mean concentration of sulphate in precipitation is approximated by calculated air concentrations of particulate sulphate. The estimated total amounts of dry and wet deposition within the area considered (9 M km 2) are about 11 Mt and 6 Mt S respectively, as compared to a total emission of 20 Mt.
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