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.

Water vapor mixing ratios profiled in Finland by means of a lidar, a satellite and a model

Water vapor mixing ratios profiled in Finland by means of a lidar, a satellite and a model

As the dominant greenhouse gas, water vapour is involved in most of the atmospheric processes accounting for about half of today's greenhouse effect. Seasonal analysis of water vapor was done in Kuopio.

Tropospheric water vapor profiles were measured with a Raman lidar during three field campaigns held in Finland. Co-located radio soundings were available throughout the period for the calibration of the lidar signals. "We investigated the possibility of calibrating the lidar water vapor profiles in the absence of co-existing on site soundings using water vapor profiles from the combined Advanced Infrared Sounder (AIRS) and the Advanced Microwave Sounding Unit (AMSU) satellite product; the Aire Limitee Adaptation dynamique Development International and High Resolution Limited Area Model (ALADIN/HIRLAM) numerical weather prediction (NWP) system, and the nearest radio sounding station located 100 km away from the lidar site (only for the permanent location of the lidar)", says researcher Maria Filioglou.  

The uncertainties of the calibration factor derived from the soundings, the satellite and the model data are < 2.8 %, 7.4 % and 3.9 %, respectively. Water vapor mixing ratio intercomparisons between the radio soundings and the various instruments/model for the period of the campaigns are also available.  A good agreement is observed for all comparisons with relative errors that do not exceed 50 % up to 8 km altitude in most cases.

Seasonal analysis of water vapor was done in Kuopio

A four-year seasonal analysis of vertical water vapor is also presented for the Kuopio site in Finland. During winter months, the air in Kuopio is dry (1.15 ± 0.40 g kg−1); during summer it is wet (5.54 ± 1.02 g kg−1); and at other times, the air is in an intermediate state. These are averaged values over the lowest 2 km in the atmosphere. Above that height a quick decrease of water vapor mixing ratios is observed, except during summer months where favorable atmospheric conditions enable higher mixing ratio values at higher altitudes. Lastly, the seasonal change in disagreement between the lidar and the model has been studied. The analysis showed that, on average, the model underestimates water vapor mixing ratios at high altitudes during spring and summer.

More information:

Maria Filioglou, tel. +358 50 463 9930, maria.filioglou@fmi.fi

Filioglou, M., Nikandrova, A., Niemelä, S., Baars, H., Mielonen, T., Leskinen, A., Brus, D., Romakkaniemi, S., Giannakaki, E., and Komppula, M.: Profiling water vapor mixing ratios in Finland by means of a Raman lidar, a satellite and a model, Atmos. Meas. Tech., 10, 4303-4316, https://doi.org/10.5194/amt-10-4303-2017, 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.