Stratospheric injections to counter global warming could damage ozone layer

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Earths ozone hole shown here (in blue) in 2006 could be negatively affected by some efforts to mitigate climate change. Credit: NASA
Earth's ozone hole, shown here (in blue) in 2006, could be negatively affected by some efforts to mitigate climate change. Credit: NASA

A much-discussed idea to offset global warming by injecting sulfate particles into the stratosphere would have a drastic impact on Earth's protective ozone layer, new research concludes. The study, led by Simone Tilmes of the National Center for Atmospheric Research (NCAR), warns that such an approach might delay the recovery of the Antarctic ozone hole by decades and cause significant ozone loss over the Arctic.


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