An intercomparison of the deposition models used in the CASTNET and CAPMoN networks

► The dry deposition velocity models used by the CASTNET and CAPMoN networks were intercompared. ► To identify inputs and algorithms that drive differences in modeled dry deposition velocities of O3, SO2, and HNO3. The models were run from a consistent framework using common input meteorology. ► Differences in aerodynamic resistance between the models contributed strongly to differences in predicted dry deposition velocities for HNO3. ► Non-stomatal (ground and cuticle) resistance parameterizations caused the largest differences in O3 and SO2 deposition velocities.