A Modelling study of the atmospheric role of iodine in the Coastal Marine Boundary Layer

摘要

This study modelled the concentration of iodine species using results obtained from a field measurement campaign called POMORIS (Point Measurements of Reactive Iodine Species). These measurements were obtained from the coastal marine environment of Mace Head, Ireland in Summer 2007. The modelled results have shown that in such an environment, the presence of iodine species has a significant impact upon the oxidising capacity of the troposphere, especially in the first minute following (I_2) emission. This result has implications for the interpretation of field measurements of H(O_x), N(O_x) and related species at the Mace Head site, and the modelling approach which is required to interpret such data. This is contrary to previous findings where the effect was only determined at intervals of 15 minutes and more.