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EUCAARI ion spectrometer measurements at 12 European sites - analysis of new particle formation events

We present comprehensive results on continuous atmospheric cluster and particle measurements in the size range similar to 1-42 nm within the European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) project. We …

On the roles of sulphuric acid and low-volatility organic vapours in the initial steps of atmospheric new particle formation

Sulphuric acid and organic vapours have been identified as the key components in the ubiquitous secondary new particle formation in the atmosphere. In order to assess their relative contribution and spatial variability, we analysed altogether 36 new …

The role of cluster energy nonaccommodation in atmospheric sulfuric acid nucleation

We discuss the possible role of energy nonaccommodation (monomer-cluster collisions that do not result in stable product formation due to liberated excess energy) in atmospheric nucleation processes involving sulfuric acid. Qualitative estimates of …

Long-term field measurements of charged and neutral clusters using Neutral cluster and Air Ion Spectrometer (NAIS)

To understand the very first steps of atmospheric particle formation and growth, measurements at the size where atmospheric nucleation occurs are crucially needed. We present number size distributions of > 0.8 nm ions and > 1.8 nm particles measured …

Some air electricity phenomena caused by waterfalls: Correlative study of the spectra

According to Our previous measurements, waterfalls permanently modify air ion spectra. In this paper we performed a correlative study of these results and proposed some pathways which can produce the observed waterfall ions. The small ion composition …

Diffusion Distortions in a Differential Mobility Analyzer with Inclined Electric Field

An approach based on the calculation of the probabilities of the random displacements of particles around their regular trajectories enables us to derive analytical expressions for the normalized apparent mobility spectrum. A particular derivation is …

Negatively charged nanoparticles produced by splashing of water

The production of splashing-generated balloelectric intermediate ions was studied by means of mobility spectrometry in the atmosphere during the rain and in a laboratory experiment simulating the heavy rain. The partial neutralization of intermediate …

Quantifying the Impact of Residential Heating on the Urban Air Quality in a Typical European Coal Combustion Region

Results of the first air ion spectrometer calibration and intercomparison workshop

The Air Ion Spectrometer (AIS) measures mobility and size distributions of atmospheric ions. The Neutral cluster and Air Ion Spectrometer (NAIS) can additionally measure neutral particles. The number of the (N) AIS instruments in the world is only …

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