The ozone's recovery may have been overstated, report warns

Protective ozone layer is recovering but not over populated areas

The study was published online Tuesday in the journal Atmospheric Chemistry and Physics, under the titled "Evidence for a continuous decline in lower stratospheric ozone offsetting ozone layer recovery". The cause is now unknown, Phys.org reports. Or, it could be a result of climate change, which has been exacerbated by human activity, and the changes it is causing to atmospheric circulation. They found that from 1998 to 2016, ozone in the lower stratosphere ebbed by 2.2 Dobson units-a measure of ozone thickness-even as concentrations in the upper stratosphere rose by about 0.8 Dobson units.

The ozone layer protects the Earth from hazardous ultraviolet radiation from the sun that can damage DNA and heighten the risk of cancer and other health problems, the newspaper noted.

Scientists had thought that VSLSs would not persist long enough in the atmosphere to reach the stratosphere and affect ozone.

The hole in the ozone at the end of the Antarctic winter of 2017 was the smallest its been since the 80s.

Researchers conducted an analysis on 11 different locations and gathered information which helped them create a subtle model of the ozone throughout the last 30 years.

Ball and others emphasize that the Montreal Protocol has still been a success.

Contrary to recent scientific assumptions, the ozone layer, which protects life on the Earth from harmful ultra-violet radiation, continues to deplete on a global scale even after decades of efforts to protect it, according to an worldwide study on Tuesday.

Co-Author of the study, Professor Joanna Haigh, Co-Director of the Grantham Institute for Climate Change and the Environment at Imperial College London informed that Ozone has been seriously declining globally since the 1980s. "The decreases in ozone are less than we saw at the poles before the Montreal Protocol was enacted, but UV radiation is more intense in these regions".

Norovirus hits Olympic security team
South Korean soldiers inspect a visitor at a security checkpoint as they replace security guards showing symptoms of norovirus. . North Korea's Rodong Sinmun carried an article with a photo on Tuesday saying the delegation left Pyongyang the previous day.

Rickroll yourself every single morning with Google Home's new music alarms
In earlier days, Google was just able to wake people up with set alarm at their designated time by beeping a standard alarm. Google Home and Amazon Echo are the two leading smart speakers in the market, and each has similar capabilities.

Alberta to suspend electricity purchase talks with BC: Notley
Mayor Don Iveson said Trudeau reiterated his support for the pipeline during the visit to a storm-water management facility. Calgary Mayor Naheed Nenshi also weighed in.

The study is an example of the concerted worldwide effort to monitor and understand what is happening with the ozone layer.

Ball and his colleagues suspect that the culprit is "very short-lived substances" (VSLSs): ozone-eating chemicals such as dichloromethane that break down within 6 months after escaping into the atmosphere.

The chemicals that are used as solvents, including paint strippers and degreasing agents could be the reason behind Earth's ozone shield depleting.

'Very short-lived substances could be the missing factor in these models'.

Today's publication combines the datasets of multiple global teams, connecting information from various satellite missions since 1985.

Dr Ball said: "The study is an example of the concerted global effort to monitor and understand what is happening with the ozone layer; many people and organisations prepared the underlying data, without which the analysis would not have been possible". Although previous studies had suggested a decline in lower stratospheric ozone, no one had combined satellite data to look at what was happening across such a wide swath of the globe and so far down in the ozone layer.

Researchers have said that, overall, the total amount of ozone in the stratosphere has not improved since the 1990s, with rises at higher altitudes in Antarctica offset by falls elsewhere, but the causes for this are unclear.

Related News:



Most liked

OLYMPICS/ North Korean art troupe exempted from sanctions for trip

IOC mull appeal over Russia doping bans

Kok lone Blitzbok in Hamilton Sevens Dream Team

Super Eagles crumble for Morocco's Atlas Lions to romp to CHAN glory

Justin Timberlake's Super Bowl Halftime Show Will Reportedly Feature A Prince Hologram
It was Raspberry Beret. "I've been waiting to sing this song since 1991 when I saw my idol, Whitney Houston, own this song". If I were meant to jam with Duke Ellington, we'd have lived in the same age.

China Calls US Nuclear Weapons Policy 'Cold War Mentality'
China holds the fifth-largest nuclear arsenal in the world, according to the Stockholm International Peace Research Institute. If North Korean launches any nuclear attack against the United States or its allies, it will mean "the end of that regime".

Lost Mayan 'Mega Cities' Discovered Under Jungle in Guatemala
They also discovered an unidentified pyramid on Tikal, which is located further into a Guatemalan jungle. The discovery is a major breakthrough in the study of Mayan archaeology.

English Premier League Report, Burnley v Manchester City, 3 February 2018
We've been beaten 3-0 and 4-1 by them in our two previous games. "We don't have any more players. At Top of The Rock he was accompanied by excited City fans wearing shirts and scarves.

U.S. says NAFTA talks are progressing very slowly
However, it is also important to consider the role of the World Trade Organization (WTO) in enforcement. The Trump Administration has taken notable steps to increase trade enforcement.

US Stocks Surrender Gains After Fed Decision
Meanwhile wages rose at the fastest pace in more than eight years, suggesting employers are competing more fiercely for workers. Bank of Nova Scotia gave back 0.7 per cent to $80.15, and Canadian Imperial Bank of Commerce lost 0.9 per cent to $119.96.

Eagles offer tickets to fan who feared missing Super Bowl
Instead, look at the history of the game. "Now the issue is we've got to find a flight, come up with cash, come up with a hotel". The video had been viewed more than a million times as of Thursday, something Parks says has been "crazy to see".

Amazon boss puts sales rise down to success of virtual assistant Alexa
Millions of Amazon customers ordered goods by voice with Alexa in the past year, Olsavsky said on a separate call with reporters. The GBH Insights analyst also said that AI will "play a vital role in Amazon services over the coming years".

Ravens owner considered firing John Harbaugh, refuses to issue 2018 ultimatum
A three-time Pro Bowler over a 13-year Hall of Fame playing career, Newsome was the first African-American to be an NFL GM. Though he will no longer be the organization's top decision maker, he will remain with the team in an unspecified role.

Irish rugby stars go on trial for rape
She had chosen to speak out, she claimed, because it could have been her friend who stood outside the nightclub that night. Both Mr Olding, of Ardenlee Street in Belfast, and Mr Jackson, from Oakleigh Park, also in the city, deny the charges.

Meghan Markle Encountered An Awkward Moment During Her Endeavour Fund Awards Speech
Meghan Markle made a glamorous entrance to her first official black tie event with husband-to-be Prince Harry on Thursday night. She's just right for it. " She's an icon, truly, that girls can look up to, that women can look up to", Chopra explained.