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.
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.
Climate scientists studying three decades of ozone measurements from seven satellites see a positive trend in the upper stratospheric ozone thanks to international efforts to curb ozone-depleting substances.
The ozone layer protects life on Earth from harmful ultraviolet solar radiation. However, pollutants can break down ozone, thinning this ozone layer and creating the infamous ozone hole. Starting in the 1970s, the stratospheric ozone declined worldwide, with the largest decline of 4 to 8 % per decade seen in the upper stratosphere.
The trend was interrupted following international agreements (Montreal Protocol and its Amendments signed 30 years ago in 1987) on the reduction of ozone-depleting substances, and the first signs of ozone recovery were seen by satellites.
Satellites provide good coverage but operate for a limited number of years. Meanwhile, climate scientists require readings spanning 30 years or more for analysing trends accurately.
The researchers from the Finnish Meteorological Institute participate actively in the European Space Agency Climate Change Initiative, one of the objectives of which is creating long-term ozone datasets for studies of the climate change in the atmosphere.
In a new development, the ozone profile measurements from seven ESA's and NASA's satellite instruments are merged in a climate data record , which covers more than 30 years, from 1984 to 2016.
"By merging the ESA Climate Change Initiative's data with NASA's, we clearly see negative ozone trends in the upper atmosphere before 1997 and positive trends after," concludes Viktoria Sofieva, Senior Research Scientist at the Finnish Meteorological Institute.
"The upper stratospheric trends beyond the tropics are statistically significant and indicate an onset of ozone recovery."
Senior research scientist Viktoria Sofieva, tel. +358 029 539 4698, firstname.lastname@example.org
Research Professor Johanna Tamminen, tel. 040 737 8733, email@example.com
Research Professor Erkki Kyrölä, tel. 050 339 7041, firstname.lastname@example.org
Sofieva, V. F., Kyrölä, E., Laine, M., Tamminen, J., Degenstein, D., Bourassa, A., Roth, C., Zawada, D., Weber, M., Rozanov, A., Rahpoe, N., Stiller, G., Laeng, A., von Clarmann, T., Walker, K. A., Sheese, P., Hubert, D., van Roozendael, M., Zehner, C., Damadeo, R., Zawodny, J., Kramarova, N. and Bhartia, P. K.: Merged SAGE II, Ozone_cci and OMPS ozone profile dataset and evaluation of ozone trends in the stratosphere, Atmos. Chem. Phys., 17(20), 12533–12552, doi:10.5194/acp-17-12533-2017, 2017
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´s own publications series are:
All publications from 2016 onwards can be found on Helda.