A5059991800- Atmospheric and Environmental Gas Dynamics
- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Methane Hydrates and Related Phenomena
- Arctic and Russian Policy Studies
- Geological Studies and Exploration
- Radioactive contamination and transfer
- Air Quality and Health Impacts
- Atmospheric aerosols and clouds
- Air Quality Monitoring and Forecasting
University of Helsinki
2021
Significance Recycling of reactive iodine from heterogeneous processes on sea-salt aerosol was hypothesized over two decades ago to play an important role in the atmospheric cleansing capacity. However, understanding this mechanism has been limited laboratory studies and not confirmed atmosphere until now. We present measurement gas-phase interhalogen species show that their production via processing marine aerosols is remarkably fast. These observations reveal recycling atomic through...
Abstract. The metallurgical industry in the Kola Peninsula, north-west Russia, form, after Norilsk, Siberia, second largest source of air pollution Arctic and subarctic domain. Sulfur dioxide (SO2) emissions from ore smelters are transported to wide areas, including Finnish Lapland. We performed investigations on concentrations SO2, aerosol precursor vapours, ion cluster size distributions together with chemical composition measurements freshly formed clusters at SMEAR I station Lapland...
Abstract. Metallurgical industry in Kola peninsula, North-West Russia, form a second largest source of air pollution the Arctic and sub-Arctic domain. Sulphur dioxide emissions from ore smelters are transported to wide areas including Finnish Lapland. We performed investigations on concentrations SO2 aerosol precursor vapours, ion cluster size distributions together with chemical composition measurements freshly formed clusters at SMEAR I station Lapland relatively close (~300 km) peninsula...
<p>In the high Arctic, climate is warming faster than in lower latitudes due to Arctic amplification. Sea ice melting and permafrost thawing, scarce vegetation of changing rapidly. All these varying conditions will have an impact on possible emission sources aerosol precursor gases, thus affecting New Particle Formation (NPF) atmosphere, which we still know very little. It important study NPF events, parameters affect phase how newly formed aerosols can grow into cloud...