Antarctic ozone concentrations, Sep. 2014

Antarctic ozone concentrations, Sep. 2014

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Credit: NASA/SCIENCE PHOTO LIBRARY

Caption: Antarctic ozone concentrations, Sep. 2014. Image showing ozone concentrations in the atmosphere above Antarctica on 11th September 2014. NASA and the National Oceanic and Atmospheric Administration (NOAA) reported that the Antarctic ozone hole reached its annual peak size on this date, when it was recorded at 24.1 million square kilometres - an area roughly the size of North America. This is part of evidence showing that the Antarctic ozone hole has been diminishing over the previous decade. Scientists are working to determine if this decrease is due to temperature increases over Antarctica or a decline in the levels of atmospheric chlorine.

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