Tinja Olenius

Guest researcher/Post doc
Room: V209
Phone: +46 8 674 7282

My work

focuses on improving the understanding of atmospheric aerosol particle formation by applying theoretical and computational methods to study the dynamics of molecular cluster and particle populations. My research interests include developing modeling tools for obtaining detailed information on molecular clustering mechanisms, and for applying this information in air quality and climate models. I also work with evaluating the validity of model approximations and experimental data analysis methods for obtaining robust comparisons between theory and observations.



One of my main tools is Atmospheric Cluster Dynamics Code (ACDC), created for studying the very first steps of atmospheric new particle formation from gas-phase molecules. ACDC simulates the dynamics of molecular cluster populations by solving the cluster birth-death equations for given ambient conditions. It can be applied to

  • Simulate cluster formation from different compounds using e.g. quantum chemical data as input (the data must be provided)
  • Study the details of cluster growth processes by e.g. tracking the growth pathways in simulations
  • Create look-up tables of nanoparticle formation rates to be used in large-scale models

The code is available upon request, and the main features are described in the below manuals.

ACDC quick guide for basic simulations
ACDC technical manual

Latest scientific papers

Molecular-level understanding of synergistic effects in sulfuric acid–amine–ammonia mixed clusters

Myllys, N.; Chee, S.; Olenius, T.; Lawler, M.; Smith, J. N.;
2019 | JOURNAL OF PHYSICAL CHEMISTRY A | 123 (2420-2425)

Role of base strength, cluster structure and charge in sulfuric-acid-driven particle formation

Myllys, N.; Kubečka, J.; Besel, V.; Alfaouri, D.; Olenius, T.; Smith, J. N.; Passananti, M.;
2019 | Atmos. Chem. Phys. | 19 (9753-9768)

Guanidine: A Highly Efficient Stabilizer in Atmospheric New-Particle Formation

Myllys, N.; Ponkkonen, T.; Passananti, M.; Elm, J.; Vehkamäki, H.; Olenius, T.
2018 | J Phys Chem A | 122 (4717-4729)

Impacts of future European emission reductions on aerosol particle number concentrations accounting for effects of ammonia, amines and organic species

Julin, J.; Murphy, B. N.; Patoulias, D.; Fountoukis, C.; Olenius, T.; Pandis, S. N.; Riipinen, I.
2018 | Environ. Sci. Technol. | 52 (692-700)

Robust metric for quantifying the importance of stochastic effects on nanoparticle growth

Olenius, T.; Pichelstorfer, L.; Stolzenburg, D.; Winkler, P. M.; Lehtinen, K. E. J.; Riipinen, I.
2018 | Sci Rep | 8

All publications

Atmospheric Science

The life cycle and impact of tiny atmospheric particles known as aerosols – both indoors as well as outdoors.