January 17, 2019

New NASA Data Suggests The Hole In The Ozone Layer Is Shrinking

06 January 2018, 04:40 | Ross Houston

Ozone layer of the atmosphere is recovering

Ozone layer of the atmosphere is recovering

The hole in the ozone layer has shrunk thanks to low levels of chlorine in the stratosphere - a drop brought about by the ban on CFCs, according to the latest NASA research. Ozone protects life by absorbing potentially harmful ultraviolet radiation that can cause skin cancer and cataracts, suppress immune systems and damage plant life.

CFCs, which were used in aerosols, fridges, air conditioning and packing materials, are so harmful because they rise into the stratosphere, where they are broken apart by the Sun's ultraviolet radiation, releasing chlorine atoms that destroy ozone molecules.

The ozone layer hole was first discovered in 1980s and soon enough, the whole world joined in to solve the problem. The Montreal Protocol was a global promise made in 1989 by industrial countries to sharply curb the use of CFCs, and it looks like the Earth is finally beginning to fix the damage we wrought.

Fast forward to 2018, and NASA has now deemed the treaty a success in staving off the demise of the ozone layer.

Strahan's study is the first to look directly at measurements of chemicals to argue that the shrinking hole stems from the ban of CFCs.

Animal rescue pilot missing after going unconscious over Gulf of Mexico
According to Anchors Up Rescue Group , the husky will be transported to them in Las Vegas for rehabilitation. Officials said Thursday that Kinsinger was tracked by fighter jets flying over the Gulf of Mexico.

Spotify sued for $2b in copyright infringement lawsuit
His latest album รท ( Divide ) has been streamed more than 3.1bn times, making it the platform's most popular album of 2017. It has more than 140m active users, over 60m of which are paying subscribers, and an estimated worth of $19bn.

Antonio Conte Keen to Rotate Chelsea Squad Against Arsenal
He has to continue to work and improve. "It's a pity because he had many chances to score but, at the same time, I'm very happy for his effort and commitment".

Using a special instrument designed by scientists at NASA's Jet Propulsion Laboratory in California, the agency's Aura satellite has measured declines in the concentration of ozone-killing chlorine. Chlorine is hard to measure, but when it's run out of ozone to eat, chlorine molecules react with methane to form hydrochloric acid, which is easier to measure.

Former Secretary of State John Kerry gestures as he delivers a speech during the 28th Meeting of the Parties to the Montreal Protocol in Kigali, Rwanda on October 14, 2016. By measuring hydrochloric acid levels each fall, scientists were able to gauge the amounts of chlorine in the ozone hole. These readings suggest that the ban on CFCs has resulted in about 20 percent less ozone depletion during the Antarctic winter than there was in 2005. Comparing hydrochloric acid levels with nitrous oxide levels-another gas that remains in the atmosphere-they determined chlorine's decline of 0.8 percent per year. The abrupt discontinuity in the 2017 plot is due to the orientation of the ozone hole rotating as the satellite gathered its data over the full 24 hour period.

"This is very close to what our model predicts we should see for this amount of chlorine decline. And even then, there might still be a small hole".

"As far as the ozone hole being gone, we're looking at 2060 or 2080", Douglass said in a statement.

In 1987 - two years after the discovery of a hole in the ozone layer above the Antarctic - the nations of the world banded together to sign the Montreal Protocol, which regulated ozone-depleting compounds and resulted in the complete phasing out of CFC production.

Other News

Trending Now

GDP growth may slow down to 6.5% in FY18
The Indian economy recovered from its three-year low of 5.7% GDP growth in the June quarter to grow at 6.3% in the September quarter.

Saudi Arabia intercepts ballistic missile fired by Yemen rebels
More than 8,750 people have been killed since the coalition's intervention in Yemen, according to the World Health Organization. The scattered fragments of the missile caused minor damage to a private property, while no injuries were reported.

Jon Gruden Inking $100 MILLION Contract ... To Coach Raiders
Gruden accumulated a 38-26 overall record as the Raiders coach and was 2-2 in playoff games during his four seasons. During that time, the Raiders won two AFC West titles and advanced to the conference championship once.

Donald Trump Democratic senators question US President's North Korea tweets
And Dorsey has said in the past that Twitter has bigger considerations in mind when policing the tweets of world leaders. In response, Twitter has said that none of the President's tweets are in violation of company rules .

Mad Catz Is Returning This Year
Lastly, the F.R.E.Q. 4 gaming headset implements high-quality 40mm neodymium drivers and includes a metal plated. Now, just in time for the Consumer Electronics Show 2018 next week, Mad Catz is back from the dead.

Sensex ends 150 points higher
The Nifty50 index was trading 46 points up at 10,551, while 30-shares Sensex was 173 points up at 34,143 around 10.35 am (IST). Yes Bank (+2.7), Adani Ports (+2.2%), Vedanta (+1.7%), Tata Steel (+1.6%) and Eicher (+1.4%) were the top gainers on Nifty50.

HP laptop battery alert: We're recalling these models due to overheating fears
Full details of the recall are available on the official website , along with a Windows utility to check the installed battery. As these batteries are sealed inside the laptop, a qualified technician will be called upon to carry out the replacement.

Bieber museum exhibit to open in Ontario hometown
If you'd like to see the exhibit, you'll have a lot of opportunity, because there is now no closing date for Steps to Stardom . Certain artifacts will be switched out for new ones as the exhibit continues.

LiAngelo, LaMelo, LaVar Ball introduced by Prienu Vytautas
The brothers, along with father LaVar, arrived in the eastern European country on Wednesday to a large throng of Lithuanian media. Anyway, if you follow the Balls, you know that the two youngest - LaMelo and LiAngelo - are off to play basketball in Lithuania.

Lukaku and Fellaini updates for Derby, Mourinho without four stars
Lukaku played the ball into Lingard's path, and the attacking midfielder hit an unstoppable shot into the top-right corner. United got its first win in five matches on Monday by notching two second-half goals to get a 2-0 win at Everton.