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/ Technology News / 2007 / November 2007 / November 16, 2007 Damaged ozone on way to recovery, says Oz scientist |
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Updated images taken by a satellite have shown that the hole in the ozone layer is on track to a full recovery.
Canberra, November 16 : Updated images taken by a satellite have shown that the hole in the ozone layer is on track to a full recovery.
Since the prohibition of chlorofluorocarbons (CFCs) and halon gases in the 1990s, the hole in the ozone has been progressively becoming smaller.
CSCIRO marine and Atmospheric scientist Paul Fraser said that "Apart from the (unusual) 2002 hole, this is the smallest hole for at least a decade,"
Dr Fraser also added that it may take until 2060 for the ozone sheath to completely recover.
CFCs and halons can remain in the atmosphere for a really long time, stretching to several decades.
"We've got this large reservoir of CFCs and halons sitting in the atmosphere, slowly leaking into the stratosphere where it does the ozone destruction," opines Dr. Frasar
According to Scientists Green houses gases are also seen as an ozone annihilator. And the lesser impacts of these green houses gases are being attributed to their cooling in the stratosphere.
"We think that the good work we've done might be delayed by 10 to 20 years," Dr Fraser said.
ANI
