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.

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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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Auroral currents pose a challenge for internal magnetic field modeling

Auroral currents pose a challenge for internal magnetic field modeling

A review article on geomagnetic indices reveals that their usage in data selection for internal magnetic field modelling may lead to biased results.

Instead, usage of indices based on global magnetometer networks is recommended, although their original measurements may not always be in the same level as observatory data. During recent 20 years significant progress in internal field modelling has been gained by space-based magnetic field measurements. The three ESA Swarm satellites launched in November 2013 comprise the latest flagship in these activities. Removing the impact of auroral electric currents in Swarm magnetic data is challenging due to their high variable nature. The review article investigates the usability of geomagnetic indices in searching Swarm data with low auroral activity for internal field model construction. Such indices have originally been developed to facilitate event identification in auroral research and they are usually based on data from well-established magnetic observatories. The study reveals that e.g. AE and Kp indices, which are widely used in auroral research, give controversial information about quiescence with 30% probability. The limited spatial coverage of magnetic observatories explains the limited performance of these indices in data selection routines. In validation of internal field models, however, the long-term data archives by magnetic observatories have irreplaceable position. 

More information:

Researcher Kirsti Kauristie, tel. +358 50 597 8874, kirsti.kauristie@fmi.fi

Kauristie K., Morschhauser A., Olsen N., Finlay C., McPherron R.L., Gjerloev J.W., Opgenoorth H.J., On the Usage of Geomagnetic Indices for Data Selection in Internal Field Modelling, Space Sci Rev, doi:10.1007/s11214-016-0301-0, 2016.

http://link.springer.com/article/10.1007/s11214-016-0301-0


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

Science News
Communications Specialist Eija Vallinheimo
tel. +358 29 539 2231

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.