This Cool Geo-Pic comes again from NASA's Earth Observatory. The news of ozone decade is cautiously optimitistic as the rate of decay seems to be "holding" for now ....
Quick "Cut & Paste" Highlights:
" ... The annual ozone hole started developing over the South Pole in late August 2009, and by September 10, it appeared that the ozone hole of 2009 would be comparable to ozone depletions over the past decade. This composite image from September 10 depicts ozone concentrations in Dobson units, with purple and blues depicting severe deficits of ozone. The image was made from data collected by the Ozone Monitoring Instrument onboard NASA’s Aura satellite...."
"...Recent observations and several studies have shown that the size of the annual ozone hole has stabilized and the level of ozone-depleting substances has decreased by 4 percent since 2001. But since chlorine and bromine compounds have long lifetimes in the atmosphere, a recovery of atmospheric ozone is not likely to be noticeable until 2020 or later.
Visit NASA’s Ozone Watch page for current imagery, data, and animations of the year to date..."
Full Article - Click Here
References / Credits:
Antarctic Ozone Hole: 1979 to 2008
Climate Change and Atmospheric Circulation Will Make for Uneven Ozone Recovery
New Simulation Shows Consequences of a World Without Earth's Natural Sunscreen
Ozone Day 2009
What’s Holding Antarctic Sea Ice Back From Melting?
NASA image courtesy Ozone Watch. Caption by Michael Carlowicz.
Instrument:
Aura - OMI
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