(2018-12-17) Tuovinen, Juha-Pekka; Aurela, Mika; Hatakka, Juha; Räsänen, Aleksi; Virtanen, Tarmo; Mikola, Juha; Ivakhov, Viktor; Kondratyev, Vladimir; Laurila, Tuomas; Finnish Meteorological Institute - Tuovinen, Juha-Pekka; Finnish Meteorological Institute - Aurela, Mika; Finnish Meteorological Institute - Hatakka, Juha; University of Helsinki - Räsänen, Aleksi; University of Helsinki - Virtanen, Tarmo; University of Helsinki - Mikola, Juha; Voeikov Main Geophysical Observatory - Ivakhov, Viktor; Yakutian Service for Hydrometeorology and Environmental Monitoring - Kondratyev, Vladimir; Finnish Meteorological Institute - Laurila, Tuomas