Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

'By far the greatest danger of Artificial Intelligence is that people conclude too early that they understand it'

 

Eliezer Yudkowsky

NASA says ozone hole stabilizing but won't fully recover until 2070

RATE THIS! +49
Posted in Science on 14th Dec, 2013 12:49 AM by AlexMuller

 The hole in the ozone layer is stabilizing but will take until about 2070 to fully recover, according to new research by NASA scientists.

 

The assessment comes more than two decades after the Montreal Protocol, the international treaty that banned chlorofluorocarbons and other compounds that deplete the ozone layer, which shields the planet from harmful ultraviolet rays.
 
Levels of chlorine in the atmosphere are falling as a result of the treaty, but have not yet dropped below the threshold necessary to have a shrinking effect on the ozone hole that forms each year over Antarctica, according to scientists at NASA's Goddard Space Flight Center.
 
They presented their findings this week at the annual meeting of the American Geophysical Union in San Francisco.
 
That doesn’t mean the ozone hole is getting worse. But scientists who track the ozone hole’s uneven progress say it is still too soon to declare a recovery.
 
For now, year-to-year variations in temperature and winds, which each year carry ozone from the tropics to polar regions, are the driving factors in the size of the hole.
 
In 2006, the ozone hole grew larger than ever. It reached a similar extent in 2011, before shrinking to its second-smallest size in 2012. Naturally occurring meteorological conditions were mostly responsible for those fluctuations, two NASA studies found.
 
Over the next two decades scientists expect the ozone hole to continue to vary widely.
 
"It’s not going to be a smooth ride," said Susan Strahan, a senior research scientist at NASA. "There will be some bumps in the road, but overall the trend is downward."

Tags: atmosphereenvironmentozoneozone layerchlorofluorocarbonsNASA

Read original article » Back to category

Comments

Author: Guest
Posted: 2013-12-14
+3
If we are to make rules and regulations about controlling CSF gases, the measurements of their concentrations and measuremnts about ozone hole have to be accurate. This is a great step in this direction Reply
Author: Guest
Posted: 2013-12-14
+2
NASA has been measuring the size and shape of the ozone hole each year from 1979. What is interesting is that actually there is no hole as such -the word describes the area in which ozone concentrations drop below a given threshold Reply
Author: Guest
Posted: 2013-12-14
+1
The importance of the ozone layer is undisputed. It is Earth’s natural sunscreen protects life on Earth by absorbing ultraviolet light, which damages DNA in plants and animals and leads to skin cancer- preserving it is vital!
4 Replies
Author: Guest
Posted: 2013-12-14
+0
We know that the Montreal Protocol, signed in 1987, gradually phased out the use of CFCs, and the amount of the chemicals in the atmosphere has slowly declined since. It is working! Reply
Author: Guest
Posted: 2013-12-14
+1
Evidence is strong that CFC gases are responsible for a massive hole in the ozone layer and at least some efforts to reduce the use seem to be in place Reply
Author: Guest
Posted: 2013-12-14
+0
And furthermore a recent research supports a link between a ban on CFC use to a "pause" or slowdown in temperature increases Reply
Author: Guest
Posted: 2013-12-14
+0
Take care. Standstill in global temperatures rises has been the subject of intense debate among scientists Reply
Reply
Author: Guest
Posted: 2013-12-14
+0
The good news that talks about climate and ozone layer are continuing.No one would like to stop further talks and agreements. The bad news is that this remains very complex and difficult
6 Replies
Author: Guest
Posted: 2013-12-14
+1
A recent conference in Warsaw should have been an important step in the just transition to a sustainable future but some think that it delivered almost nothing
1 Replies
Author: Guest
Posted: 2013-12-14
+0
I agree and feel that governments have given up on the process Reply
Reply
Author: Guest
Posted: 2013-12-14
+0
The problem was that China and India clashed with the developed countries by insisting that rich countries continue to operate under stricter standards than poor countries. Avoiding impacts on economic growth seem to be the main goal for all involved Reply
Author: Guest
Posted: 2013-12-14
+0
A compromise was to prepare after all. Agreement was on "contributions," rather than "commitments" for the new deal. This leave countries with more options in what kind of emissions targets to propose. Reply
Author: Guest
Posted: 2013-12-14
+0
Warsaw talks had failed to deliver substantial progress and this was just weeks after an international panel of scientists warned about the growing consensus on human-caused global warming- Reply
Author: Guest
Posted: 2013-12-14
+0
Nevertheless, countries taking part agreed to a watered-down “contribution” to combat global warming in order to prevent a complete collapse of talks - talks will go on Reply
Reply
Author: Guest
Posted: 2013-12-14
+1
Global temperature is the ultimate parameter. In addition to CFSs ,other contributors to the rise in global temperatures have to be considered - these include increases in China's use of coal, changes in solar output, and the impact of the El Nino weather cycle Reply
Author: Guest
Posted: 2013-12-14
+0
We should not overlook that this report is a good news. NASA scientists are predicting that the hole in the ozone layer might finally make a full recovery
2 Replies
Author: Guest
Posted: 2013-12-14
+0
Long term monitoring will remain important - wait a little longer before we celebrate Reply
Reply


 

Recent headlines

  • Posted in Business on 2017-03-26 19:56:28
    The U.S. will be hit worse by job automation than other.....read more
    Posted in Business on 2017-03-26 19:49:51
    Elon Musk says Tesla will start taking orders for Solar.....read more
    Posted in Science on 2017-03-26 19:39:27
    Impact crater linked to Martian tsunamis..read more
    Posted in Software on 2017-03-25 14:13:38
    Google Develops A Deep Learning Machine That Could Learn.....read more
    Posted in Medicine on 2017-03-25 14:26:25
    Google’s Calico partners with new biotech firm to.....read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Intensive medical treatment can reverse type 2 diabetes..read more
    Posted by AlexMuller
    Daily consumption of tea protects the elderly from cognitive.....read more
    Posted by AlexMuller
    New analysis method of metabolites accurately predicts whether.....read more
    Posted by AlexMuller
    Unproven stem cell 'therapy' blinds three patients at Florida.....read more
    Posted by AlexMuller
    Indigenous South American group has healthiest arteries of all.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me