%0 journal article %@ 1680-7316 %A Bieser, J., Slemr, F., Ambrose, J., Brenninkmeijer, C., Brooks, S., Dastoor, A., De Simone, F., Ebinghaus, R., Gencarelli, C., Geyer, B., Gratz, L.E., Hedgecock, I.M., Jaffe, D., Kelley, P., Lin, C.-J., Matthias, V., Ryjkov, A., Selin, N., Song, S., Travnikov, O., Weigelt, A., Luke, W., Ren, X., Zahn, A., Yang, X., Zhu, Y., Pirrone, N. %D 2017 %J Atmospheric Chemistry and Physics %N 11 %P 6925-6955 %R doi:10.5194/acp-17-6925-2017 %T Multi-model study of mercury dispersion in the atmosphere: Vertical distribution of mercury species %U https://doi.org/10.5194/acp-17-6925-2017 11 %X The investigated models proved to be able to reproduce the distribution of total and elemental mercury concentrations in the troposphere including interhemispheric trends. One key aspect of the study is the investigation of mercury oxidation in the troposphere. We found that different chemistry schemes were better at reproducing observed oxidized mercury patterns depending on altitude. High concentrations of oxidized mercury in the upper troposphere could be reproduced with oxidation by bromine while elevated concentrations in the lower troposphere were better reproduced by OH and ozone chemistry. However, the results were not always conclusive as the physical and chemical parameterizations in the chemistry transport models also proved to have a substantial impact on model results.