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Whatever happened to the hole on the Ozone Layer

2

Comments

  • #32
    Cookie_Monster
    Registered Users, Registered Users 2, Paid Member Posts: 24,755 ✭✭✭✭Cookie_Monster


    it's still around, just not topical or as large. It'll take a while for it to recover fully.
    It's very noticeable down here in NZ, the sun is far stronger and you burn much much quicker compared to say Spain.

    http://en.wikipedia.org/wiki/Ozone_depletion


  • #33
    endacl
    Registered Users, Registered Users 2 Posts: 22,443 ✭✭✭✭endacl


    Cookie_Monster wrote: »
    it's still around, just not topical or as large. It'll take a while for it to recover fully.
    It's very noticeable down here in NZ, the sun is far stronger and you burn much much quicker compared to say Spain.

    http://en.wikipedia.org/wiki/Ozone_depletion

    You're in NZ?!? I always read you as being just outside of Mullingar!

    :D


  • #34
    Sam Kade
    Registered Users, Registered Users 2 Posts: 12,297 ✭✭✭✭Sam Kade


    endacl wrote: »
    You pay VAT on the food that provides the muscle power to turn the handle...
    What about if you live off wild berries and forage from other peoples rubbish bins?


  • #35
    Roger_007
    Registered Users, Registered Users 2 Posts: 21,886 ✭✭✭✭Roger_007


    kc90 wrote: »
    There is and always has been seasonal thinning of the ozone layer over the poles. As the temperatures increase in spring, chemical deposits in the ice are released and react with the ozone. This happens at the poles due to unusual cloud systems that allow the ozone and other chemicals to react in water droplets.
    The problem with CFCs is that they regenerate and can react 1000s of times destroying a huge amount of ozone while most other gases are, by comparison, inert. So, it went from a situation where there's a small hole for a few months to a large permanent hole that was continuing to grow. While it's not back 'normal' yet, the ozone is replenishing.
    There is not sufficient historical to state one way or the other what the long-term status of the ozone layer is. Nobody knows what the levels of ozone were 50 or 100 or 1000 years ago. Therefore it is impossible to say what is, or is not, a normal level.
    There is a worrying tendency amongst attention-seeking scientists to make definitive and dramatic statements about the state of the world as if the world began 50 or 100 years ago. How often have we heard that something is the most extreme occurrence "since records began". The records on the ozone layer are only available for the past 30 years or so. No accurate assessment or prediction can be made with such paltry data.


  • #36
    endacl
    Registered Users, Registered Users 2 Posts: 22,443 ✭✭✭✭endacl


    Sam Kade wrote: »
    What about if you live off wild berries and forage from other peoples rubbish bins?

    Yeah. That works. I'm starting next week.


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  • #37
    losthorizon
    Registered Users, Registered Users 2 Posts: 4,565 ✭✭✭losthorizon


    People get mixed up with climate change and the hole in the ozone layer they are two completely different things. One is also a short term fix (ozone layer) and Climate change is long term.

    They have nothing absolutely nothing to do with each other. The reason you dont hear about the ozone layer any more is that human interference with it has been stopped. I cant remember off the top of my head how long it takes to replenish the damage done from CFCs etc but I think it only takes about 25 -100 years which is tiny in earth terms.

    The ozone problem has been solved thankfully.


  • #38
    Roger_007
    Registered Users, Registered Users 2 Posts: 21,886 ✭✭✭✭Roger_007


    losthorizon wrote: »
    ?.........

    The ozone problem has been solved thankfully.

    Not in New Zealand apparently according to Cookie-Monster.....


  • #39
    galwayrush
    Registered Users, Registered Users 2 Posts: 12,816 ✭✭✭✭galwayrush


    What caused all the Ice Ages on Earth over the last few million years?. It's a natural cycle we can't do anything about.


  • #40
    keith16
    Closed Accounts Posts: 8,061 ✭✭✭keith16


    Try to think of the hole in the ozone layer like earths "sunroof".


  • #41
    Duiske
    Registered Users, Registered Users 2 Posts: 3,086 ✭✭✭Duiske


    bleg wrote: »
    I thought it was called climate change because in some locales it may result in periodical cooler temperatures thus it's a more accurate term. The average world temperatures are increasing, and the vast scientific consensus is that this is due to the activities of humans.

    How much has the global average temperature increased by since the year 2000 ?


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  • #42
    losthorizon
    Registered Users, Registered Users 2 Posts: 4,565 ✭✭✭losthorizon


    galwayrush wrote: »
    What caused all the Ice Ages on Earth over the last few million years?. It's a natural cycle we can't do anything about.

    That has nothing to do with the ozone layer. Thats either climate change or a change in the Sun


  • #43
    kc90
    Registered Users, Registered Users 2 Posts: 364 ✭✭kc90


    galwayrush wrote: »
    What caused all the Ice Ages on Earth over the last few million years?. It's a natural cycle we can't do anything about.

    Probably not a hole in the ozone layer.


  • #44
    losthorizon
    Registered Users, Registered Users 2 Posts: 4,565 ✭✭✭losthorizon


    Duiske wrote: »
    How much has the global average temperature increased by since the year 2000 ?

    Again they are two totally different things.


  • #45
    Israeli Superiority
    Closed Accounts Posts: 365 ✭✭Israeli Superiority


    galwayrush wrote: »
    What caused all the Ice Ages on Earth over the last few million years?. It's a natural cycle we can't do anything about.

    There's a few theories. The one I believe is that the Sun goes through periods of releasing less energy, which would cause the temperature to drop temporarily.

    If another Ice Age happens, we'll know if it's the Sun that caused the Ice Ages because of modern technology.


  • #46
    Hilly Bill
    Registered Users, Registered Users 2 Posts: 6,055 ✭✭✭Hilly Bill


    I read something about it in the Herald 2 years ago. Some Polish builders filled it in.


  • #47
    Duiske
    Registered Users, Registered Users 2 Posts: 3,086 ✭✭✭Duiske


    losthorizon wrote: »
    Again they are two totally different things.

    What is two different things ?? Bleg made a statement that "The average world temperatures are increasing". I'm simply asking the question how much has the average world temperature increased by in the last 13 years.


  • #48
    bleg
    Registered Users, Registered Users 2 Posts: 5,847 ✭✭✭bleg


    Duiske wrote: »
    What is two different things ?? Bleg made a statement that "The average world temperatures are increasing". I'm simply asking the question how much has the average world temperature increased by in the last 13 years.


    http://www.nasa.gov/topics/earth/features/2012-temps.html


  • #49
    bleg
    Registered Users, Registered Users 2 Posts: 5,847 ✭✭✭bleg


    Israeli Superiority wrote: »
    There's a few theories. The one I believe is that the Sun goes through periods of releasing less energy, which would cause the temperature to drop temporarily.



    That's grand. You're going against scientific consensus on the issue though.

    It's like saying you're going to have homeopathic treatment rather than evidence based medicine.


  • #50
    Cork24
    Closed Accounts Posts: 2,663 ✭✭✭Cork24


    O zone layer hole is still their science reckon in about 30 years 2/3 of earth will have no cover from sun rays,

    And you will be able to see the northern lights from London city


  • #51
    Phoeey
    Registered Users, Registered Users 2 Posts: 126 ✭✭Phoeey


    losthorizon wrote: »
    That has nothing to do with the ozone layer. Thats either climate change or a change in the Sun

    A change in the tilt and orbit of our planet contributes to it as well.


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  • #52
    Carawaystick
    Registered Users, Registered Users 2 Posts: 8,779 ✭✭✭Carawaystick


    endacl wrote: »
    Well..... All energy is ultimately solar energy. That's really just taxing at source!
    Nuclear & geothermal energy isn't solar
    well, not from our sun anyway


  • #53
    Festy
    Closed Accounts Posts: 1,425 ✭✭✭Festy


    The council men filled it in.


  • #54
    namloc1980
    Registered Users, Registered Users 2 Posts: 18,771 ✭✭✭✭namloc1980


    Remember the scare stories about acid rain back in the day?


  • #55
    losthorizon
    Registered Users, Registered Users 2 Posts: 4,565 ✭✭✭losthorizon


    Duiske wrote: »
    What is two different things ?? Bleg made a statement that "The average world temperatures are increasing". I'm simply asking the question how much has the average world temperature increased by in the last 13 years.

    Ozone Depletion was mainly caused by CFCs - Chloro fluoro carbons which were found in things like underarm deodorants etc. These were just simply outlawed in these products. The main thing about the Ozone hole in the 80s and 90s was that it was s a quick fix in earth terms.

    Its like a protective film that screens us from the suns harmful rays. Now Ozone holes still occur as it takes a bit of time for CFCS to break down in the atmosphere but they are breaking down. We have solved the problem by and large.




    I think 13 years is too small a time to measure temperature difference but since the start of the industrial revolution we have seen a massive increase in temperature difference. Climate Change and its wrong to call it climate warming because it also effects currents which may make some nations colder (including Ireland!) (unlikely) is caused by gases used in mainly industrial processes likes CO2 and methane (caused by pigs farting believe it or not!:D).
    The suns rays arrive here in short wave they hit the ground are absorbed but are changed into long wave then bounced back towards the atmosphered where they are trapped. Now C02 and other industrial gases absorb these long wave rays and prevent the suns rays from leaving causing the earth to heat up. The main causes of CO2 are oil fired power plants, coal, Turf , cars, etc

    Unlike Ozone CO2 takes a long time to break down and the problem wont really hit us but your children and especially nations in the Pacific and Bangladesh. You might say wont Ireland have a lovely climate but the Gulf stream could be hit and in fact it might get colder not warmer in this part of Europe. There could be a tipping point for that. You just dont know with climate. And then there is the role the Sun plays - it supplies us with all our energy so it might decide to brighten or lessen its output.



    You really are playing with fire

    Met Eireann have this diagram showing the increase in temp since the 1960s. If it went back to the 1880s it would be even more noticeable of how our temperature has increased.

    http://www.met.ie/climate/climate-of-ireland.asp

    Temp increases should get faster as we go through the years.


  • #56
    Roger_007
    Registered Users, Registered Users 2 Posts: 21,886 ✭✭✭✭Roger_007


    losthorizon wrote: »
    Ozone Depletion was mainly caused by CFCs - Chloro fluoro carbons which were found in things like underarm deodorants etc. These were just simply outlawed in these products. The main thing about the Ozone hole in the 80s and 90s was that it was s a quick fix in earth terms.

    Its like a protective film that screens us from the suns harmful rays. Now Ozone holes still occur as it takes a bit of time for CFCS to break down in the atmosphere but they are breaking down. We have solved the problem by and large.





    I think 13 years is too small a time to measure temperature difference but since the start of the industrial revolution we have seen a massive increase in temperature difference.................
    ............Temp increases should get faster as we go through the years.
    Of course there has been an increase in temperature in the northern hemisphere since the start of the industrial revolution. This is mainly because this period coincided with the recovery from the Little Ice Age when temperatures were abnormally low in the northern hemisphere. It is not clear if the Little Ice Age was a global event or not. We also had no accurate global temperature data before the advent of weather satellites in the last 30 years or so. We don't really know by how much global temperatures have changed prior to that.
    You are correct to say that 13 years is too short a time to measure temperature difference, but 100 or 200 years is also too short in climate terms. You would need to be looking at 1000 years or so. From what evidence there is, the climate now seems to be roughly similar to what it was in the medieval period, (800 - 1400 AD).
    How do we know that whatever temperature increase there has been in the last 200 years is not simply a gradual recovery to 'normal' after an unusually cold period?


  • #57
    corktina
    Closed Accounts Posts: 17,730 ✭✭✭✭corktina


    I don't think there is anything in it , but the Government are looking into it....











    badda bish


  • #58
    FootShooter
    Registered Users, Registered Users 2 Posts: 209 ✭✭FootShooter


    It's one of the success stories of international environmental politics. The ozone layer should be back to normal by 2050 because of the Montreal-protocol and cuts in use of CFCs.


  • #59
    dj jarvis
    Registered Users, Registered Users 2 Posts: 3,485 ✭✭✭dj jarvis


    Sam Kade wrote: »
    Yeah, maybe they should tax people for using windup flashlights next.

    they do , the sales tax and vat when you buy the wind up flashlight


  • #60
    Renegade Mechanic
    Registered Users, Registered Users 2 Posts: 7,928 ✭✭✭Renegade Mechanic


    I wouldnt be a very good greenie, but personally, I think CFCs and earlier, leaded petrol would have made for a very different world today, only two decades on, were they not sternly banned/very heavily reduced. Definitely the right choice made there. Also that hole is very slowly healing, in that it opend up less each year. The extra billion or so that have joined us since then are complicating things a little.


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  • #61
    losthorizon
    Registered Users, Registered Users 2 Posts: 4,565 ✭✭✭losthorizon


    Roger_007 wrote: »
    Of course there has been an increase in temperature in the northern hemisphere since the start of the industrial revolution. This is mainly because this period coincided with the recovery from the Little Ice Age when temperatures were abnormally low in the northern hemisphere. It is not clear if the Little Ice Age was a global event or not. We also had no accurate global temperature data before the advent of weather satellites in the last 30 years or so. We don't really know by how much global temperatures have changed prior to that.
    You are correct to say that 13 years is too short a time to measure temperature difference, but 100 or 200 years is also too short in climate terms. You would need to be looking at 1000 years or so. From what evidence there is, the climate now seems to be roughly similar to what it was in the medieval period, (800 - 1400 AD).
    How do we know that whatever temperature increase there has been in the last 200 years is not simply a gradual recovery to 'normal' after an unusually cold period?

    We actually have plenty of data about climate change before satellites etc We can get this through numerous methods for eg tree ring data.

    Most scientific studies have accepted global climate change. The odd ones which dont are usually funded by oil companies etc. It was interesting that both the recent heads of BP and Shell when they were retiring said that they fully believe in Climate change.

    http://mitsloan.mit.edu/newsroom/indepth-energy-browne.php


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