Video Link: https://www.youtube.com/watch?v=JMGx2d7sWvg

Ozone Hole
Daily ozone hole images from Jul 1, 2012 to Oct. 19, 2012. The ozone hole max is on Sept. 22, 2012. The average area covered by the Antarctic ozone hole this year was the second smallest in the last 20 years, according to data from NASA and National Oceanic and Atmospheric Administration (NOAA) satellites. Scientists attribute the change to warmer temperatures in the Antarctic lower stratosphere. The ozone hole reached its maximum size Sept. 22, covering 8.2 million square miles (21.2 million square kilometers), or the area of the United States, Canada and Mexico combined. The average size of the 2012 ozone hole was 6.9 million square miles (17.9 million square kilometers). The Sept. 6, 2000 ozone hole was the largest on record at 11.5 million square miles (29.9 million square kilometers). "The ozone hole mainly is caused by chlorine from human-produced chemicals, and these chlorine levels are still sizable in the Antarctic stratosphere," said NASA atmospheric scientist Paul Newman of NASA #39;s Goddard Space Flight Center in Greenbelt, Md. "Natural fluctuations in weather patterns resulted in warmer stratospheric temperatures this year. These temperatures led to a smaller ozone hole." Observing Earth #39;s Ozone Layer Atmospheric ozone is no longer declining because concentrations of ozone-depleting chemicals stopped increasing and are now declining. This image shows projected ozone concentrations for the year 2042, with (left) and without (right) the Montreal Protocol to reduce ...From:NASAexploreViews:0 0ratingsTime:00:19More inScience Technology

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Ozone Hole - Video