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Despite CFC ban, ozone hole won't heal until 2070, NASA finds
http://www.nbcnews.com/science/despite-cfc-ban-ozone-hole-wont-heal-until-2070-nasa-2D11736034SAN FRANCISCO — The banning of ozone-depleting chemicals hasn't yet caused detectable improvements in the Antarctic ozone hole, new research suggests.
Instead, changes in the South Pole's ozone hole from year-to-year are likely the result of natural variations in wind patterns, researchers said here Wednesday in a news conference at the annual meeting of the American Geophysical Union.
"Ozone is produced in the tropics, but it's transported by the winds from the tropics to the polar region," said Anne Douglass, a scientist with the Aura project at NASA's Goddard Space Flight Center in Greenbelt, Md. That transport "varies a little bit from year to year."
Instead, changes in the South Pole's ozone hole from year-to-year are likely the result of natural variations in wind patterns, researchers said here Wednesday in a news conference at the annual meeting of the American Geophysical Union.
"Ozone is produced in the tropics, but it's transported by the winds from the tropics to the polar region," said Anne Douglass, a scientist with the Aura project at NASA's Goddard Space Flight Center in Greenbelt, Md. That transport "varies a little bit from year to year."
Almost 100 years for the planet to heal itself from a relatively minor emission problem like CFC's.
This does not inspire confidence that we can sufficiently address our current, MASSIVE anthropogenic gas emission problem.....