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Ozone Layer Faces Record 40 Pct Loss Over Arctic


Environment  (tags: Ozone layer, Arctic, environment, ultraviolet radiation )

Anna
- 2995 days ago - news.yahoo.com
The protective ozone layer in the Arctic that keeps out the sun's most damaging rays -- ultraviolet radiation -- has thinned about 40 percent this winter, a record drop, the U.N. weather agency said Tuesday.



   

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Comments

Watchtower Maya (3)
Tuesday April 5, 2011, 10:38 pm
Thanks for the info Anna.
 

Lisa H (180)
Tuesday April 5, 2011, 11:52 pm
Could there be much more bad news?? God, if the oil industry doesn't kill us, the nuke industry will..
 

Rajee Seetharam (138)
Wednesday April 6, 2011, 2:40 am
Scary!!! Noted with thanks.
 

Fiona Ogilvie (562)
Wednesday April 6, 2011, 3:25 am
This conditiom worsens every year, we made the problem but we cannot find a way to docorrect itl.
 

patricia lasek (317)
Wednesday April 6, 2011, 4:11 am
But the RepublicanTs continue to deny global warming and want to gut the EPA.

Go figure!
 

Carol H (229)
Wednesday April 6, 2011, 5:03 am
very bad news, thanks for the post Anna
 

Carol C (97)
Wednesday April 6, 2011, 8:32 am
Noted. Thank you.
 

Brenda T (0)
Wednesday April 6, 2011, 9:11 am
Very worrying news.
 

bj. shaw (61)
Wednesday April 6, 2011, 9:42 am
sad
 

Lin Penrose (92)
Wednesday April 6, 2011, 9:55 am
Noted, thanks Anna. How many ways have humans contributed to the death of a habitable planet?
 

Toni C (508)
Wednesday April 6, 2011, 10:41 am
Noted, and thanks for the article, Anna... Now remember, folks... according to the Tea Baggers and Repugnuts we have nothing to worry about because global warming is just a figment of our imaginations, clear cut forests will grow back overnight, and we NEED to keep using that oil no matter what the EPA says [smirk, smirk!!]
 

David C (75)
Wednesday April 6, 2011, 5:41 pm
And this was supposed to be one BIG world-wide environmental problem we had "solved" or at least "minimized" (I think Vice President Gore even used this as an example in "An Inconvenient Truth")

Just motivates me to need to work harder! We have been blessed with the technology of this past half-century and still the beauty of this world -- with the combination giving benefits and blessings that no other generation has had. Seems to me that we owe it to future humanity to save it for them, and we owe it to past humanity that has given us our opportunities, too.

I guess we'll just have to keep working harder to save our earth -- there is no planet B for life, lets protect the one we have....

 

Ann L (15)
Wednesday April 6, 2011, 7:35 pm
Yes, we did make the problem. Unfortunatley, it is wrapped up in big business and no one wants their profits to fall. Wonder what they will say when the the Earth can no longer renew itself?
 

Intuitive S (40)
Wednesday April 6, 2011, 11:17 pm
We need to start talking about the ozone layer again - A LOT - we made changes in limiting CFCs & championed the cause in years past..but it has gone by the wayside for some reason...as though everything's ok now.
 

Intuitive S (40)
Wednesday April 6, 2011, 11:21 pm
interesting & hope-inspiring wikipedia article on CFCs...need to get rid of the HCFCs....but loved a reading about this, as to how positive change gained momentum:
The U.S. Government's attitude began to change again in 1983, when William Ruckelshaus replaced Anne M. Burford as Administrator of the United States Environmental Protection Agency. Under Ruckelshaus and his successor, Lee Thomas, the EPA pushed for an international approach to halocarbon regulations. In 1985 20 nations, including most of the major CFC producers, signed the Vienna Convention for the Protection of the Ozone Layer which established a framework for negotiating international regulations on ozone-depleting substances. That same year, the discovery of the Antarctic ozone hole was announced, causing a revival in public attention to the issue. In 1987, representatives from 43 nations signed the Montreal Protocol. Meanwhile, the halocarbon industry shifted its position and started supporting a protocol to limit CFC production. The reasons for this were in part explained by "Dr. Mostafa Tolba, former head of the UN Environment Programme, who was quoted in the 30 June 1990 edition of The New Scientist, '...the chemical industry supported the Montreal Protocol in 1987 because it set up a worldwide schedule for phasing out CFCs, which [were] no longer protected by patents. This provided companies with an equal opportunity to market new, more profitable compounds.'"[40]

At Montreal, the participants agreed to freeze production of CFCs at 1986 levels and to reduce production by 50% by 1999.[38] After a series of scientific expeditions to the Antarctic produced convincing evidence that the ozone hole was indeed caused by chlorine and bromine from manmade organohalogens, the Montreal Protocol was strengthened at a 1990 meeting in London. The participants agreed to phase out CFCs and halons entirely (aside from a very small amount marked for certain "essential" uses, such as asthma inhalers) by 2000 in non-Article 5 countries and by 2010 in Article 5 (less developed) signatories [41] At a 1992 meeting in Copenhagen, the phase out date was moved up to 1996.[41] At the same meeting, methyl bromide (MeBr), a fumigant used primarily in agricultural production, was added to the list of controlled substances. It should be noted that for all substances controlled under the Protocol, phaseout schedules were delayed for less developed ('Article 5(1)') countries, and phaseout in these countries was supported by transfers of expertise, technology, and money from non-Article 5(1) Parties to the Protocol. Additionally, exemptions from the agreed schedules could be applied for under the Essential Use Exemption (EUE) process for substances other than methyl bromide and under the Critical Use Exemption (CUE) process for methyl bromide. See Gareau[42] and DeCanio and Norman[43] for more detail on the exemption processes.

To some extent, CFCs have been replaced by the less damaging hydro-chloro-fluoro-carbons (HCFCs), although concerns remain regarding HCFCs also. In some applications, hydro-fluoro-carbons (HFCs) have been used to replace CFCs. HFCs, which contain no chlorine or bromine, do not contribute at all to ozone depletion although they are potent greenhouse gases. The best known of these compounds is probably HFC-134a (R-134a), which in the United States has largely replaced CFC-12 (R-12) in automobile air conditioners. In laboratory analytics (a former "essential" use) the ozone depleting substances can be replaced with various other solvents.[44]
Ozone Diplomacy, by Richard Benedick (Harvard University Press, 1991) gives a detailed account of the negotiation process that led to the Montreal Protocol. Pielke and Betsill[dead link] provide an extensive review of early U.S. government responses to the emerging science of ozone depletion by CFCs.

More recently, policy experts have advocated for efforts to link ozone protection efforts to climate protection efforts.[45][46] Many ODS are also greenhouse gasses, some significantly more powerful agents of radiative forcing than carbon dioxide over the short and medium term. Policy decisions in one arena affect the costs and effectiveness of environmental improvements in the other.
etc etc... from http://en.wikipedia.org/wiki/Ozone_depletion#Public_policy
 

Robert O (12)
Thursday April 7, 2011, 1:01 am
Terrible.
 

Lindsey Williams (234)
Thursday April 7, 2011, 6:24 am
So sad....the poor polar bears....
 

Dynelle M (13)
Thursday April 7, 2011, 10:51 am
Scary and very sad indeed!
 

Natividad P (104)
Thursday April 7, 2011, 12:10 pm
Noted. It is a bad and disturbing news. Thank you Anna
 

Douglas K (134)
Thursday April 7, 2011, 2:22 pm
And they were doing so well in reversing the hole in the ozone layer over the Antarctic area by eliminating aerosol chlorofluorocarbons. Go back and examine your game, fools, bear down!
 

Ancil S (175)
Thursday April 7, 2011, 6:11 pm
Well,if Mother Earth dies,than we all will die too.We need to choose, corporate profits,or our very lives.
 

Mary T (178)
Thursday April 7, 2011, 9:01 pm
Very disturbing news, But try and tell some one that does not believe in climate change and they look at you like you are crazy, Humans have been destroying this planet for a long time.
 

Cheryl B (64)
Friday April 8, 2011, 8:02 am
scary
 

Cheryl B (64)
Friday April 8, 2011, 8:03 am
scary
 

alicia m (97)
Thursday April 14, 2011, 6:25 am
noted,gracias
 
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