Atmospheric composition research

Atmospheric composition research studies and observes the physical and chemical properties of aerosol particles and gases with possible effects on climate and air quality.


The main research themes are

  • Physical properties, composition, and chemical transformation of fine particles
  • Exchange of greenhouse gases between the atmosphere and ecosystems
  • Organic compounds in the atmosphere and their analysis methods
  • Development of air quality models and model validation


Other activities of the unit are

  • Implementation of international air quality monitoring programmes
  • Maintaining the national air quality reference laboratory
  • Development and maintenance of the national air quality portal
  • ICOS-activities of the Finnish Meteorological Institute
  • Maintenance of research stations in Finland and strategic sites in foreign countries



Contact information

Head of Unit
Heikki Lihavainen
tel. +358 29 539 5492
Atmospheric aerosols:
Head of Group Eija Asmi
tel. +358 29 539 5352
Air Quality:
Head of Group Hannele Hakola
tel. +358 29 539 5512
Greenhouse gases:
Head of Group Tuomas Laurila
tel. +358 29 539 5510
Atmospheric Dispersion Modelling:
Head of Group Ari Karppinen
tel. +358 29 539 5453
Heli Raitanen tel. +358 29 539 5412
fax +358 29 539 5403


Air Quality in Finland

SILAM-dispersion model

Helsinki Urban Climate Observation Network

MAKESENS application for trend calculation

Air Quality Expert Services