Fig. 1

Drift pattern of RV Polarstern with the ice floe during the BELUGA deployments (black line) with each day of balloon observation highlighted as red stars. The sea ice extent was derived from the MODIS-AMSR2 data set42.

Drift pattern of RV Polarstern with the ice floe during the BELUGA deployments (black line) with each day of balloon observation highlighted as red stars. The sea ice extent was derived from the MODIS-AMSR2 data set42.