July 2, 2010

Recovered ozone has its downside

So, the story of ozone layer getting thin has been around far more than we can remember, personally for me, this is what makes me dwell into geologist in the first place, and this happen to be the first climate change that I knew of..

The story is that harmful gases, mainly carbon dioxide (CO2) and CFC have been identified as major sources of ozone's thinning, this was first discovered by British scientist in 1985 at Antartica, the extend of the thinning reach Australia, New Zealand, Chile and South Africa, this raise threats of several skin cancers arose from the thinning of ozone layer

Thus, several plans and counter-measures were set up to prevent and repair any damages done to the ozone layer, including the banned of CFC gasses worldwide

However, recent studies by New Zealand's National Institute of Water and Atmospheric Research, done by Guang Zeng and his her colleagues shows that recovered ozone layer may prove more damage than thought

For those that don't know, our sky consists of several different layers, the layer where the air we breath is call the troposphere, and where the ozone layer is located in 1 layer above is call the stratosphere, the problem with healed ozone layer this ozone layer can seep into troposphere and this gasses are deadly to human and other living life forms

Evidence of the gas actually penetrate through troposphere is still small, but in time, if the ozone continue to heal itself, more and more of this gas can get through, as shown by computer model prepared by Guang Zeng

sources here

There are still no possible solution for this, how do you deal with something that can kill you, if you save or destroy it either way? I just wanna raise some question here, so how did the people before ozone thinning live? surely the ozone before that would have been much better than today, but we don't see any people dying from ozone

Well, until then..

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