NOTICE: THE WORKSHOP HAS BEEN POSTPONED UNTIL MAY 2022 BECAUSE OF THE CORONAVIRUS (COVID-19) OUTBREAK. The abstract submission has been stopped and the registration will remain closed until early 2022. The SOC and LOC continue to monitor the situation. Stay safe.

Welcome to the 11th International Workshop on Long-Term Changes and Trends in the Atmosphere (TRENDS 2020) which will be held at the Space and Earth Observation Centre, Finnish Meteorological Institute (FMI), Helsinki, Finland.

In addition to the main workshop, two SPARC side meetings will be arranged:

  • 3rd LOTUS Workshop (Long-term Ozone Trends
    and Uncertainties in the Stratosphere)
  • ATC Workshop (Atmospheric Temperature Changes)

Important dates:

  • Registration opens: TBA
  • Travel support application deadline: TBA
  • Abstract submission deadline: TBA
  • Travel support decisions: TBA
  • Early registration deadline: TBA
  • Workshop dates: TBA

The workshop topics include:

  • Observed trends and long-term variations in the middle atmosphere
  • Modeled and predicted trends and long-term variations in the middle atmosphere
  • Trends and long-term changes in the ionosphere and thermosphere
  • Dynamic, physical, chemical and radiative mechanisms of trends and long-term variations
  • Role of the middle atmosphere for climate
  • Miscellaneous

Scientific organising committee (SOC):

  • Jan Laštovička, Institute of Atmospheric Physics, Prague, Czech Republic
  • Gufran Beig, Indian Institute of Tropical Meteorology, Pune, India
  • Franz-Josef Lübken, Leibniz Institute of Atmospheric Physics, Kühlungsborn, Germany
  • Liying Qian, High Altitude Observatory, NCAR, Boulder, CO, USA
  • Kalevi Mursula, University of Oulu, Oulu, Finland
  • Gabriele Stiller, Karlsruhe Institute of Technology, Germany
  • Ana G. Elias, Universidad Nacional de Tucuman, Argentina
  • Irina Petropavlovskikh, NOAA Earth System Research Laboratory, CIRES, University of Colorado, Boulder, CO, USA
  • Viktoria Sofieva, Finnish Meteorological Institute, Helsinki, Finland

Local organising committee (LOC): Viktoria Sofieva (chair), Niilo Kalakoski, Anna Sinisalo, Monika Szeląg, Pekka Verronen, and Pinja Vesanen. LOC address: Space and Earth Observation Centre, Finnish Meteorological Institute, P.O. Box 503, FI-00101 Helsinki, Finland. LOC E-mail: LOC E-mail