Weather balloon launch

Weather balloon launch

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Credit: BRITISH ANTARCTIC SURVEY/SCIENCE PHOTO LIBRARY

Caption: Weather balloon launch. Researcher launching a radiosonde weather balloon, which is carrying a package of instruments. At an altitude of around 25 kilometres, these will measure temperature, humidity and atmospheric pressure. Tracking the balloon during its journey allows measurement of wind speed and direction. The balloon bursts at high altitude due to the low atmospheric pressure, and the instruments fall to Earth by parachute. Study of the atmosphere allows more accurate weather forecasting and enables environmental change to be monitored. Photographed at the Halley research station, Antarctica.

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Keywords: antarctic, antarctica, atmosphere, atmospheric, climate, cold, freezing, frozen, halley research station, heath, ice, launch, launching, laws building, male, man, phil, radiosonde, research, researcher, scientist, snow, studying, weather balloon

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