Science

Ozone Layer Slowly Healing Thanks to Montreal Protocol

Ozone Layer Slowly Healing Thanks to Montreal Protocol”

NASA's Paul Newman, joint chairman of the report, said that two thirds of the ozone would have been destroyed by 2065 had the measures not been implemented.

If this rate of recovery continues, the ozone layer over the northern hemisphere and mid-latitudes could heal completely by the 2030s, the report said. When the ozone layer is weakened, more UV rays can get through, making humans more prone to skin cancer, cataracts and other diseases.

The earth's protective ozone layer is well on track to recovery, thanks to worldwide efforts against ozone-depleting substances.

'If ozone-depleting substances had continued to increase, we would have seen huge effects.

The hole in the Earth's ozone layer is expected to fully heal within 50 years, climate change experts predict in a new United Nations report.

WMO scientists said that since 2000, the ozone layer is recovering by 1-3% per decade.

The study, "Scientific Assessment of Ozone Depletion: 2018", is the latest in a series of reports, released every four years, which monitor the recovery of ozone in the stratosphere. Use of man-made chemicals called chlorofluorocarbons (CFCs), which release chlorine and bromine, began eating away at the ozone.

More news: Panthers hold on to top Tampa, 42-28

The Antarctic ozone hole is expected to gradually close, with springtime total column ozone returning to 1980 values in the 2060s.

Montzka said if the source of the new emissions could be identified and contained, the damage to the ozone should be minor.

But in 1987, countries around the world agreed in the Montreal Protocol to phase out CFCs and businesses came up with replacements. The hole reaches its peak in September and October and disappears by late December until the next Southern Hemisphere spring.

The UN had already hailed the success of the Protocol but the report said it was the first time that there were emerging indications that the Antarctic ozone hole had diminished in size and depth since 2000.

However, while most of the banned damaging gases have been phased out, the study found at least one violation - having spotting that production and emission of CFC-11 unexpected increased in eastern Asia since 2012.

"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 future". And the Montreal Protocol is set to be enhanced in early 2019 with the ratification of the Kigali Amendment, which seeks to curb future climate change by targeting powerful greenhouse gases used in refrigeration and air conditioning.

"I don't think we can do a victory lap until 2060", Newman said.



Like this

loading...
loading...

Latest


09 November 2018
'China, Pakistan satisfied with outcomes of PM Khan's visit'
According to the Ministry's spokesperson Hua Chunying, a number of achievements were made during the visit. He said the PM's visit to Beijing had set grounds for implementation of the second phase of CPEC.

09 November 2018
Race to stop Norway frigate sinking after oil tanker collision
Seven people were lightly injured in the collision in the Hjeltefjord near Bergen in the early hours of Thursday, rescuers say. It was NATO's largest exercise in decades, involving 50,000 troops, 10,000 combat vehicles, 65 vessels, and 250 aircraft.

09 November 2018
Midterm election results: Democrat win to become 'potent weapon' for Donald Trump
Texas is set to send its first Hispanic women to Congress, as Democrats Veronica Escobar and Sylvia Garcia both won their races. He was also asked about comments from some Democrats, who are now in the majority, that they will seek his income tax returns.

09 November 2018
Melbourne attack: One dead after deadly Bourke Street knife rampage
In a later statement, police said the man assaulted police, fled on foot, then was shot while lunging at police with the knife. Images from the scene show a large white sheet covering a section of the road near what appears to be blood.

09 November 2018
Early risers less likely to develop breast cancer, new study reveals
The National Cancer Research Institute ( NCRI ) is a UK-wide partnership of cancer research funders, established in 2001. They also found some evidence for a causal effect of increased sleep duration and sleep fragmentation on breast cancer .

09 November 2018
Feds announce new policy to limit asylum claims
President Donald Trump has blamed USA asylum rules for luring thousands of migrants a year from Central American countries. Those seeking asylum must be fleeing due to a serious fear of persecution.

09 November 2018
Red Dead Online release date narrowed down
Any updated thoughts on making Red Dead 2 available on PC down the road? Investor: Red Dead 1 was not on PC. Red Dead Online, the Red Dead Redemption 2 multiplayer component is set to launch very soon.

09 November 2018
Trump under fire for firing Sessions
Before joining the Justice Department , Whitaker was openly critical of the Mueller investigation. But Mitt Romney , the party's 2012 presidential nominee who was elected on Tuesday to the U.S.

09 November 2018
Dak Prescott throws for 243 yards, 2 touchdowns in loss for Dallas
Facing the Cowboys defensive line is not going to be easy, but the Titans have to step up to the plate and make things happen. He presided over an offense that gained only 41 yards in the second half before the Cowboys found themselves down by 14.

09 November 2018
Mangled wreckage of BHP runaway train revealed in video footage
BHP Billiton said it had suspended all its iron ore rail operations in Western Australia on Monday after the incident. It was deliberately derailed at a set of points, operated by a control centre, about 119km from Port Hedland.