Ozone Exposure and Impacts on Vegetation in the Nordic and Baltic Countries, Northern Plants and Ozone, Near-Ambient Ozone Concentrations Reduce the Vigor of Betula and Populus Species in Finland, Rising Atmospheric Co₂ Concentration Partially Masks the Negative Effects of Elevated O₃ in Silver Birch (Betula pendu la Roth), Evidence for Impacts of Near-Ambient Ozone Concentrations on Vegetation in Southern Sweden, Ambient Ozone Concentration and Its Impact on Forest Vegetation in Lithuania, Effects of the Nordic Photoperiod on Ozone Sensitivity and Repair in Different Clover Species Studied Using Infrared Imaging, Impact of Experimentally Elevated Ozone on Seed Germination and Growth of Russian Pine (Pinus sylvestris) and Spruce (Picea spp.) Provenances, Observations of Ground-Level Ozone and NO₂ in Northernmost Sweden, including the Scandian Mountain Range, Climate and Emission Changes Contributing to Changes in Near-Surface Ozone in Europe over the Coming Decades: Results from Model Studies, Synoptic Weather Types and Long-Range Transport Patterns for Ozone Precursors during High-Ozone Events in Southern Sweden.