PARENT SESSION

1L (1) - Exposure Modelling
Hall 4
1:45 PM - 3:30 PM, Wednesday, 30 April 2003
Chair: Lammel, G.¹, ¹
Co-chair: Dachs, J.², ²

(WE4/13) The sensitivity of multicompartmental fate to data uncertainties and lack of resolution.

Lammel, Gerhard¹, Semeena V.S., ¹, ¹ Max Planck Institute for Meteorology, Hamburg, Hamburg, Germany

ABSTRACT- Different categories of data uncertainties (physico-chemical properties, degradation rates, substance usage patterns) and degree of resolution (compartmental, temporal, spatial) add to lack of predictability of environmental fate in exposure modelling. Sensitivity studies have been performed using a simple, non-steady state zero-dimensional (box) mass-balance model of intercompartmental mass exchange and a complex multicompartment chemistry-transport-model (MCTM) which is based on an atmospheric general circulation model. Results will be presented and assessed regarding the effects of several of the aforementioned categories on predicted environmental concentrations, transport potential and persistence of xenobiotics.

Key words: Multicompartment chemistry-transport model, Long-range transport, Persistent organic pollutants, Persistence