Caption:
Prof. Dr. Manfred Wendisch (right) explains the meteorologist Dr. Michael Schäfer (center) and Elena Ruiz Donoso (left), both Leipzig University, details of the flight route for a test flight in the research aircraft "Polar 5" (Basler BT-67), on Monday, June 5, 2017 at Longyearbyen Airport, Spitsbergen Norway. Prof. Dr. Manfred Wendisch from the University of Leipzig is leading the ACLOUD (Arctic Cloud Observation Using Airborne Measurements during Polar Day) measurement campaign, which investigates the role of Arctic clouds for the increased climate change in polar regions. © 2017 Frank Dietz / Agentur Focus