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- From: hannegan@hyperion.gsfc.nasa.gov (Bryan Hannegan)
- Subject: Re: Ozone (A few questions I would like answered.)
- Message-ID: <1992Nov15.233916.7922@nsisrv.gsfc.nasa.gov>
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- References: <Bxqy4z.KJu@ucunix.san.uc.edu> <1992Nov15.180329.4931@netcom.com>
- Date: Sun, 15 Nov 1992 23:39:16 GMT
- Lines: 46
-
- In article <1992Nov15.180329.4931@netcom.com> tomd@netcom.com (Tom Dempster) writes:
- >A followup question:
- >If the prospects of a global environmental disaster were to become an
- >undisputeable reality, would there be any hope of the human race saving
- >itself and the planet from the harmful effects of UV exposure by creating
- >a replacement source of ozone in the atmosphere?
- >
- >Problems:
- > 1) What amount of ozone molecules are we going to need?
- > 2) What amount of electrical energy would be required to
- > create this much ozone? (if corona discharge were to be
- > the method)
- > 3) If this artificially-produced ozone were to be created on
- > on the earth's surface, how could it be transported to the
- > atmosphere where it is needed?
- >
-
- There is an interesting arguement put forth in a Nature article by Dr. Ralph
- Cicerone, and collaborators concerning the "environmental engineering of the
- stratospheric ozone layer". I'm at home right now, but I have a copy of it
- in my office and will post the citation if asked. The formation of ozone,
- in the stratosphere and in the troposphere is an endothermic process, that
- is it takes energy to make it. In nature this energy comes from the UV light
- the oxygen molecules absorb, and it is quite a bit of energy.
-
- Carl also made an interesting point in noting that the mere addition of ozone
- won't do the trick, since the CFC's and such will continue to eat away
- at the layer unless we limit their emissions. So depending upon the amount
- of CFC reduction, the amount of ozone needed in such a repair would vary.
-
- Transport is a tricky issue, something that the Cicerone, et al. article
- attempts to focus on from an engineering standpoint.
-
- In terms of addressing the problem, ozone depletion is not like hunger: The
- problem is not as a result of a failure in distribution. Though they are
- the same chemical, tropospheric ozone and stratospheric ozone are two
- different issues all together, one bad, and one good. Reducing your emissions
- of tropospheric ozone, will unfortunately, do little to help or hurt the
- stratospheric layer.
-
- As always, I am open to comments, being only a mere grad student....
-
- Bryan Hannegan
- Dept. of Geosciences, University of California, Irvine
- hannegan@halo.ps.uci.edu
-
-