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Research on three branches of activity

High-quality research is utilized to develop services to benefit our everyday life. Visible examples are improvement of weather forecasts, development of new expert and warning services as well as applications of the newest research results.

The meteorological and marine research programme does basic and applied research on meteorology, atmospheric science and physical oceanography. Research subjects include forecast models for different time frames, scientific applications and remote sensing observations linked to the research area as well as the effects of climate change and how to adapt to them.
The climate research programme does basic and applied research on the different components of the climate system. The research subjects are especially past, current and future climate as well as the composition of the atmosphere and its effects on climate change and air quality. Some of the employees of the programme work at the office in Kuopio.
The space and earth observation centre is responsible for the research of the polar regions and near space as well as developing technology related to the activity. The research subjects are especially arctic research and remote sensing, new observation methods and space. The Arctic Space Centre and Sodankylä office are a part of the Space and earth observation centre.

Science news

FMI's researchers publish about 300 peer-reviewed articles annually.

In Science News we publish current information about FMI's studies on the weather, the sea and the climate.

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Formation speed of smaller nucleation particles evaluated with the help of larger ones

Formation speed of smaller nucleation particles evaluated with the help of larger ones

A study by the University of Eastern Finland, the Finnish Meteorological Institute, and the University of Helsinki defined the formation speed for particles 2 nm (nanometres, or one millionth of a millimetre) with the help of the formation speed and growth speed of larger-sized particles, 7 nm in size.

The estimates were made on particles measured over a period of eight years (2007–2015) at the SMEAR*IV measuring station located at the Puijo Tower in Kuopio. The average formation speed of particles 7 nm in size was 0.44 cm-3s-1 and the estimated formation speed for 3 nm particles was 0.61 cm-3s-1. This means that about one particle is formed in one square centimetre of air (about the volume of a sugar cube) every two seconds.

More information:

Researcher Ari Leskinen, tel. +358 50 522 9148, ari.leskinen@fmi.fi

Professor Kari Lehtinen, University of Eastern Finland, tel. +358 40 8677 844, kari.lehtinen@uef.fi

Baranizadeh E., Nieminen T., Yli-Juuti T., Kulmala M., Petäjä T., Leskinen A., Komppula M., Laaksonen A. & Lehtinen K.E.J. 2017. Estimation of atmospheric particle formation rates through an analytical formula: Validation and application in Hyytiälä and Puijo, Finland. Atmos. Chem. Phys., 17, 13361-13371, doi:10.5194/acp-17-13361-2017


Science news archive

Contact information

Scientific Director Ari Laaksonen
tel. +358 539 5530

Meteorological and Marine Research Programme
Director Sami Niemelä
tel. +358 29 539 4172

Climate Research Programme
Director  Hannele Korhonen
tel. +358  29 539 2135

Space and Earth Observation Centre
Director Jouni Pulliainen
tel. +358 29 539 4701

FMI publications

FMI´s own publications series are:

  • FMI Contributions: high-quality peer-reviewed research results, mainly doctoral dissertations
  • FMI Reports: current research results mainly for customers and other stakeholders

All publications from 2016 onwards can be found on Helda.