Long-range Atmospheric Transport of Persistent Organic Pollutants, I: Description of surface-atmosphere exchange modules and implementation in EUROS

Sample simulations of the net deposition of lindane over Europe are discussed. For non-emission areas over land, wet deposition was found to account for on average 75% of the total input of lindane, while on average 30% of this input re-volatilizes. Over sea, dry deposition accounts for on average 72% of the total input, the average re-volatilization fraction being 15%. The concentrations of lindane in rainwater for a number of stations around the North Sea are overestimated by the model by about a factor of 3. A model response analysis showed that the emission data are the main cause of uncertainty in the calculated concentrations.