Another impact from more methane and nitrous oxide (denitrification in the water column or from permafrost decomposing)
Drew Shindell of NASA Goddard Institute for Space Studies in New York City, suggests that recovery of the ozone layer will be delayed 10 to 20 years by rising levels of two gases—methane and nitrous oxide—that also contribute to greenhouse warming. At low latitudes, methane in the stratosphere breaks down into hydrogen oxides, which attack ozone. Nitrous oxide can decompose to form ozone-eating nitrogen oxides. http://discovermagaz...nov/breakozone/
Second Hole in the Ozone Layer opened over the Artic North Pole in 2011 – Could be Harmful to People
The new tear in the layer of the atmosphere which protects us from the Sun’s harmful UV radiation, is currently smaller than that of the hole over Antarctica. However, the Arctic polar vortex, a persistent large-scale cyclone within which the ozone loss takes place is highly mobile in comparison to the Antarctic vortex.
This means that the Artic Ozone hole has a greater chance of occurring over densely populated northern areas on the earth, as opposed to the virtually unpopulated surface of Antarctica.
Forming in mid August, the Ozone Hole over Antarctica reached a larger than average 26 million square kilometers by September 12, 2011. While the 2011 Antarctic ozone hole briefly extended over the southern tip of South America, if the Arctic Ozone Hole were to eventually reach the size of its polar opposite, researchers estimate that it could expose over 700 million people, wildlife and plants to dangerous UV ray levels. http://newstaar.com/...-people/355050/
