'Healing' detected in Antarctic ozone hole

Discussion in 'Environment' started by Flopper, Jul 1, 2016.

  1. Flopper
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    Flopper Gold Member

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    Finally all the efforts over the last 30 years to eliminate and recycle products containing CFLs is having an effect. A study covering the last 15 years shows the size of the hole in the ozone layer over the antarctic has been reduced by 50%, an area about the size of India. Good news for increasing the size of antarctic ice pack, but what about global warming. Researchers say a lot more study is needed. What do you think? BTW, I'm not a climate scientist so please keep in layman terms.

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    'Healing' detected in Antarctic ozone hole - BBC News
     
  2. Old Rocks
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    Old Rocks Diamond Member

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    Don't know off the top of my head. Just had a hammer down 10 hr day repairing equipment in a steel mill, and took a shower to wash the grease off, and then spent a couple of hours picking blackberries.

    Interesting question, and between 'Honey does' tomorrow, I will see what I can find.
     
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  3. Flopper
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    Flopper Gold Member

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    I seems strange to me that this is first time we have heard of this. After all this data has been building for 15 years.
     
  4. Crick
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    Crick Gold Member

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    There's been no shortage of studies and data. I suppose it just doesn't make the 10 o'clock news much any more.

    This is a good thing for ending global warming.

    The third line down is forcing (warming) from UV getting through from loss of ozone due to halocarbons (freon).

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  5. Billy_Bob
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    Billy_Bob Platinum Member

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    LOL... another false correlation... that ignores what is required to create Ozone.... Nice try... but no cigar..
     
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  6. Crick
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    Crick Gold Member

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    Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about four percent in the total amount of ozone in Earth's stratosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions.[1] The latter phenomenon is referred to as the ozone hole. In addition to these well-known stratospheric phenomena, there are also springtime polar tropospheric ozone depletion events.

    The details of polar ozone hole formation differ from that of mid-latitude thinning but the most important process in both iscatalytic destruction of ozone by atomic halogens.[2] The main source of these halogen atoms in the stratosphere isphotodissociation of man-made halocarbon refrigerants, solvents, propellants, and foam-blowing agents(chlorofluorocarbon (CFCs), HCFCs, freons, halons). These compounds are transported into the stratosphere by winds after being emitted at the surface.[3] Both types of ozone depletion were observed to increase as emissions of halocarbons increased.

    CFCs and other contributory substances are referred to as ozone-depleting substances (ODS). Since the ozone layer prevents most harmful UVB wavelengths (280–315 nm) of ultraviolet light (UV light) from passing through the Earth's atmosphere, observed and projected decreases in ozone generated worldwide concern, leading to adoption of the Montreal Protocol that bans the production of CFCs, halons, and other ozone-depleting chemicals such as carbon tetrachloride andtrichloroethane. It is suspected that a variety of biological consequences such as increases in sunburn, skin cancer,cataracts, damage to plants, and reduction of plankton populations in the ocean's photic zone may result from the increased UV exposure due to ozone depletion.

    Wikipedia
    References
    1. "Twenty Questions and Answers About the Ozone Layer". Scientific Assessment of Ozone Depletion: 2010 (PDF). World Meteorological Organization. 2011. Retrieved March 13, 2015.
    2. "Part III. The Science of the Ozone Hole". Retrieved March 5, 2007.
    3. Andino, Jean M. (October 21, 1999). "Chlorofluorocarbons (CFCs) are heavier than air, so how do scientists suppose that these chemicals reach the altitude of the ozone layer to adversely affect it?". Scientific American.
     
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  7. waltky
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    waltky Wise ol' monkey Supporting Member

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    Granny says, "Dat's right - purt soon dey gonna be growin' vegetables atta South Pole...
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    Climate Change Fueling Rapid Greening of Antarctic Peninsula
    May 19, 2017 - One of the coldest areas in the world is getting greener, and researchers say it’s because of global warming.
     
  8. frigidweirdo
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    frigidweirdo Platinum Member

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    Clearly it was just fake news, there is no ozone, and there is no hole in the non-ozone that doesn't exist and never has. It's God that protects the Earth from solar rays from the death star, not the ozone, so it's all fake news.
     
  9. waltky
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    waltky Wise ol' monkey Supporting Member

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    CFC11 on the rise...
    [​IMG]
    Emissions of Banned Ozone-Eating Chemical Are Rising
    May 16, 2018 - Something strange is happening with a now-banned chemical that eats away at Earth's protective ozone layer: Scientists say there's more of it — not less — going into the atmosphere and they don't know where it is coming from.
    See also:


    Likely cheating on ozone treaty found
    Fri, May 18, 2018 - CONTRAVENTION: NOAA chemist Stephen Montzka said either the banned chemical is being made or its byproducts are not being reported as required by a 1987 treaty
     
    Last edited: May 17, 2018
  10. skookerasbil
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    skookerasbil Platinum Member

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    As with all this climate stuff....nobody knows shit about shit.

    Do we need the famous sk00ks boobs analogy for a clarification on the level of conjecture here?
     

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