Urmas Horrak

Latest

• Links between the concentrations of gaseous pollutants measured in different regions of Estonia
• A global observational analysis to understand changes in air quality during exceptionally low anthropogenic emission conditions
• The importance of sesquiterpene oxidation products for secondary organic aerosol formation in a springtime hemiboreal forest
• Global analysis of continental boundary layer new particle formation based on long-term measurements
• Atmospheric new particle formation at the research station Melpitz, Germany: connection with gaseous precursors and meteorological parameters
• Pan-Eurasian Experiment (PEEX): towards a holistic understanding of the feedbacks and interactions in the land-atmosphere-ocean-society continuum in the northern Eurasian region
• Characteristics of new-particle formation at three SMEAR stations
• The legacy of Finnish-Estonian air ion and aerosol workshops
• Interpretation of Atmospheric Aerosol Measurements by Means of a Numerical Simulator of New Particle Formation Events
• A Method for Automated Estimation of Parameters Controlling Aerosol New Particle Formation
• Intermediate ions in the atmosphere
• Atmospheric Electricity and Aerosol-Cloud Interactions in Earth's Atmosphere
• Composition of negative air ions as a function of ion age and selected trace gases: Mass- and mobility distribution
• Geographical origin of aerosol particles observed during the LAPBIAT measurement campaign in spring 2003 in Finnish Lapland
• An Instrumental Comparison of Mobility and Mass Measurements of Atmospheric Small Ions
• Long-term field measurements of charged and neutral clusters using Neutral cluster and Air Ion Spectrometer (NAIS)
• Overview of the biosphere-aerosol-cloud-climate interactions (BACCI) studies
• Size distributions of atmospheric ions in the Baltic Sea region