Tuomas Naakka will defend his doctoral thesis entitled ”Atmospheric moisture in the Arctic and Antarctic”. The public examination will be on 11 March 2022 at 12:00 in Chemicum, Auditorium A129. The event is live with a stream at https://helsinki.zoom.us/j/61237350297. Professor Peter Langen (Aarhus University, Denmark) will serve as the opponent, and professor Heikki Järvinen as the custos.