Atmosphere scientists on board icebreaker Oden uses weather balloons to make measurements in the air. The measurements can be used for e.g. making weather forecasts.
The researcher John Prytherch, from the University of Leeds explains how the helium-filled balloons equipped with a radiosonde, makes measurements of temperature, humidity, air pressure and wind speed during its way up through the atmosphere. The balloon can travel about 25 km into the air before the air pressure causes the balloon explode.