Published: Fri, November 09, 2018
Research | By Raquel Erickson

The UN released a report on the recovery of the ozone layer

The UN released a report on the recovery of the ozone layer

The depletion of the amount of ozone in the atmosphere has been observed since the late 1970s and resulted in a global phase out of various chemicals spearheaded by the 1987 Montreal Protocol.

The study published this week went by the name "Scientific Assessment of Ozone Depletion: 2018" and was just the latest of a series of studies published every four years.

Ozone in parts of the stratosphere has recovered at a rate of 1-3 percent since 2000 and, at projected rates, Northern Hemisphere and mid-latitude ozone is scheduled to heal completely by the 2030s, followed by the Southern Hemisphere in the 2050s and polar regions by 2060. The planet-wide effort to eliminate CFCs and similar chemicals has indeed helped a great deal, and the natural processes that replenish the ozone layer are slowly patching up the damage humans did prior to and including much of the 1980s. That is the Kigali Amendment, a strengthening of green initiative agreements that'll "slash" the use of climate-warming gasses in refrigerators, air conditioners, and other products around the world.

"The careful mix of authoritative science and collaborative action that has defined the protocol for more than 30 years and was set to heal our ozone layer is precisely why the Kigali amendment holds such promise for climate action in the future", he added.

"The Montreal Protocol is one of the most successful multilateral agreements in history for a reason", stated Erik Solheim, the head of UN Environment. So far, only 58 nations have agreed to the 80% reduction target.

"It's really good news", Paul Newman, chief Earth scientist at NASA's Goddard Space Flight Center and the report's co-author, said.

Full compliance would reduce future global warming due to HFCs by about 50 per cent between now and 2050 compared to a scenario without any HFC controls.

If this is ratified by 2019, the Earth may avoid a 0.2 to 0.4°C increase.

The IPCC report offered the clearest evidence to date of the drastic difference between the 1.5°C and 2°C scenarios. But it could have been worse given that colder-than-average temperatures created the ideal conditions to destroy the ozone in the Antarctic stratosphere, NOAA reported.NOAA and NASA scientists credit the Montreal Protocol for preventing the hole from growing.

Pablo Campana, minister of Production, Foreign Trade and Investment, stated at the opening ceremony that 'being the venue of the Meeting of the Parties shows our country's compliance with the Montreal Protocol, and this is an ideal formu to spread the commitment by the national government to the industrial and sustainable development.

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