Earth’s protective ozone layer is slowly but noticeably healing at a pace that would fully mend the hole over Antarctica in about 43 years, a new United Nations report says.
. Our success in phasing out ozone-eating chemicals shows us what can and must be done – as a matter of urgency — to transition away from fossil fuels, reduce greenhouse gases and so limit temperature increase,” World Meteorological Organization Secretary-General Prof. Petteri Taalas said in a statement.
The two chief chemicals that munch away at ozone are in lower levels in the atmosphere, said Newman, chief Earth scientist at NASA’s Goddard Space Flight Center. Chlorine levels are down 11.5% since they peaked in 1993 and bromine, which is more efficient at eating ozone but is at lower levels in the air, dropped 14.5% since its 1999 peak, the report said.
Decades ago, people could go into a store and buy a can of refrigerants that eat away at the ozone, punch a hole in it and pollute the atmosphere, Fahey said. Now, not only are the substances banned but they are no longer much in people’s homes or cars, replaced by cleaner chemicals. . Rogue emissions were spotted in part of China but now have gone back down to where they are expected, Newman said.
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UN says ozone layer slowly healing, hole to mend by 2066A United Nations scientific report says Earth's protective ozone layer is slowly but noticeably healing
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Ozone hole should fully mend in 2066, UN saysA United Nations scientific report says Earth's protective ozone layer is slowly but noticeably healing.
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Ozone hole should fully mend by 2066, UN saysA United Nations scientific report says Earth's protective ozone layer is slowly but noticeably healing.
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UN says ozone layer slowly healing, hole to mend by 2066Earth's protective ozone layer is slowly but noticeably healing at a pace that would fully mend the hole over Antarctica in about 43 years, a new United Nations report says.
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UN says ozone layer slowly healing, hole to mend by 2066Earth's protective ozone layer is slowly but noticeably healing at a pace that would fully mend the hole over Antarctica in about 43 years, a new United Nations report says.
Les mer »