Friday, March 26, 2010

Due to the climate change, the ozone layer started depleting... and soon a ozone hole was seen in Antarctica. But due to the great effort by the scientist, the repair of the hole started... But check out what the latest report says...
The hole in the ozone layer is now steadily closing, but its repair could actually increase warming in the southern hemisphere.The Antarctic ozone hole was once regarded as one of the biggest environmental threats, but the discovery of a previously undiscovered feedback shows that it has instead helped to shield this region from carbon-induced warming over the past two decades.
High-speed winds in the area beneath the hole have led to the formation of brighter summertime clouds, which reflect more of the sun's powerful rays like a mirror.
The key to this newly-discovered feedback is aerosol -- tiny reflective particles suspended within the air that are known by experts to have a huge impact on climate.
Greenhouses gases absorb infrared radiation from the Earth and release it back into the atmosphere as heat, causing the planet to warm up over time. Aerosol works against this by reflecting heat from the sun back into space, cooling the planet as it does so.
Beneath the Antarctic ozone hole, high-speed winds whip up large amounts of sea spray, which contains millions of tiny salt particles. This spray then forms droplets and eventually clouds, and the increased spray over the last two decades has made these clouds brighter and more reflective.
As the ozone layer recovers it is believed that this feedback mechanism could decline in effectiveness, or even be reversed, leading to accelerated warming in the southern hemisphere.
The research is still going on, in order to repair this ozone whole in a natural way so that there is no effect on the environment as well...
So hope for the best...
With Regards...!

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