Projected change in atmospheric nitrogen deposition to the Baltic Sea towards 2020 - Geels, C.; Hansen, K. M.; Christensen, J. H.; Ambelas Skjøth, C.; Ellermann, T.; Hedegaard, G. B.; Hertel, O.; Frohn, L. M.; Gross, A.; Brandt, J. (Atmos. Chem. Phys., 2012)