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The ozone hole continues to grow

Awareness of the hole in the ozone is small but the hole in the ozone continues to grow, the year 2008 breaks records and the size of the hole this year ranks fifth

The hole in the ozone layer, September 12, 2008. (Source: US Oceanographic and Atmospheric Administration)
The hole in the ozone layer, September 12, 2008. (Source: US Oceanographic and Atmospheric Administration)

The US National Oceanographic and Atmospheric Administration (NOAA) reports every month what is happening with the ozone hole, 2008 data Exposing Because the size of the hole in the ozone broke a record again this year, the area of ​​the hole is 10.5 million square miles, a height of 4 miles and a density of 107 Dobson units (measured on September 28). Dobson units measure the amount of ozone in the atmosphere above a certain point. For comparison in 2006, The peak year In the depletion of the ozone layer, the size of the hole was 11.4 million square miles and its thickness amounted to only 93 Dibson units (measurement on October 9) when the average measurement in the previous month was 300 units!

Agency scientists have been monitoring the ozone layer since 1962 and over the years they have discovered that the ozone layer over the South Pole is depleting. Over the years this has created serious concern in the general public since the depletion of the ozone layer has negative effects on life on Earth. The ozone in the stratosphere suppresses the penetration of the harmful ultraviolet radiation that comes from the sun, without the protection of the ozone skin cancer cases among the population will increase, global agriculture will be affected due to the negative effect on the vegetation and the livestock will suffer due to the effect on the animals.

After many studies it became clear that man has a part in the depletion of the ozone layer, therefore in 1987 an international environmental treaty was signed under the leadership of the United Nations. The "Montreal Convention" is signed by 183 countries and they undertake, among other things, to reduce the use of substances that emit CFCs and other substances that are harmful to the ozone layer.

The action reduced humanity's impact on the layer and later observations showed that the rate of ozone disappearance decreased significantly in the following years. hall We are not the only factor that affects the disappearance of the ozone layer, it is a system that is affected by many factors such as "solar storms" from outer space and temperature and wind patterns that affect from within the earth.

It is true that awareness of the issue has contributed to reducing the human footprint on the destruction of the ozone layer, but the headlines about the rapid restoration of the layer have been false over the years and it seems that the process will continue for a much longer period of time, according to Stefan Munzeke from NOAA "We do not expect a full restoration of the Antarctic ozone before the second half of the century". The optimistic estimates talk about 2070 if there are no unexpected effects.

12 תגובות

  1. Dew
    Ozone is formed as an effect of ultraviolet radiation and electrical discharges from atmospheric oxygen.
    Halogen ions cause the destruction of ozone - these ions are formed in large quantities from the emission of certain gases created by man.

    The source of ozone remains, and the reason for the destruction of ozone has been stopped (in abstraction, of course) and therefore the ozone balance has returned to normal.

    The restoration shows that science is right….

  2. Peace,
    Do you know the size of the hole as of today?
    I would appreciate updates/relevant links.
    Thanks

  3. Peace
    The article states that the hole in the ozone continues to grow and in 2008 its area reached about 10.5 million square miles. . But according to what the writer brings, a few sentences later in 2006 the hole in the ozone was bigger and its area reached 11.4 million square miles. According to what I learned in arithmetic, the size of the hole in the ozone is reduced by about 900 thousand square miles over the course of two years. This is a dramatic change for the better at a rate approaching 10% within two years!!! that can bring back the smile to the pessimists among us. And I am among them. And another point. The article written in November supposedly refers to the entire year 2008. But in light of the two data the author brings, it is impossible to expect in November whether by the end of 2008 the area of ​​the hole in the ozone will increase or continue to decrease. I would love to know how things are today. Almost a year later.

  4. Earth will not be harmed.
    He will destroy us, and will continue to be the earth for many millions of years without this virus called man.
    The earth is constantly trying to mitigate the impact by natural diseases and natural disasters but the inevitable has already moved from its place.
    A global birth reduction, and the immediate introduction of personal carbon cards, can help slow down - not stop - the inevitable.
    The vegetarians already told you 30 years ago that to raise a cow you need 4 dunams of land created - without trees - grass.
    On those 4 dunams you can grow more protein than there is in a cow.
    what did you do ?
    Have you even thought about it?
    Do you have compost at home?
    Have you thought of working to cancel the idiotic holiday called Lag Ba'Omer, where only the Jews in an organized way, once every year, burn huge amounts of wood in volumes of hundreds of thousands of cubic meters and release gases into the atmosphere?
    Have you thought of introducing into law, the use of gas for cars and not fuel - for all cars, or can you only think of how to profit from this as well?
    Is the sentence:
    Think globally, act locally.
    known to all ?

    Views

  5. Yanon Sharab:
    It's bad for us.
    Already today this causes an increase in morbidity the cancer:
    There is no lack of solar energy that harms the earth and there is no need to add carcinogenic radiation.

  6. I think this is good for us because as the hole in the ozone grows, the sun's energy becomes more concentrated and can be used instead of oil that is almost exhausted.

    Even though the sun's radiation will be stronger, I trust Dr. Fisher to fix us a nice sunscreen for the coming summer.
    [Dr. Fisher checked it out]

  7. Is there a connection between the hole in the ozone and climate change? Why did the action to reduce emissions of ozone-depleting substances succeed and the Kyoto Convention against climate change fail? What is the economic cost of the treaty against the hole in the ozone compared to the economic cost of the Kyoto treaty, or similar treaties?

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