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- Newsgroups: sci.environment
- Path: sparky!uunet!cs.utexas.edu!sun-barr!ames!agate!boulder!ucsu!cubldr.colorado.edu!parson_r
- From: parson_r@cubldr.colorado.edu (Robert Parson)
- Subject: Re: 1992 ANTARCTIC OZONE DEPLETION
- Message-ID: <1993Jan20.222727.1@cubldr.colorado.edu>
- Lines: 42
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- Organization: University of Colorado, Boulder
- References: <1993Jan20.222158.20969@wega.rz.uni-ulm.de> <1993Jan20.234149.10650@gn.ecn.purdue.edu> <2B5DF356.12305@news.service.uci.edu> <1993Jan21.014305.18111@gn.ecn.purdue.edu>
- Date: Thu, 21 Jan 1993 05:27:27 GMT
- Lines: 42
-
- In article <1993Jan21.014305.18111@gn.ecn.purdue.edu>, constant@gn.ecn.purdue.edu (Tino) writes:
- >
- > From the same source:
- >
- > <begin quote>
- >
- > There are several other conclusive studies demonstrating that vast amounts
- > of chlorine from seawater and other sources do reach the stratosphere. Three
- > scientists from the National Center for Atmospheric Research, A.C. Delany,
- > J.P. Sheldovsky, and W.H. Pollack published a paper in the Dec. 20, 1974
- > _Journal of Geophysical Research_ ("Stratospheric Aerosol: The Contribution
- > from the Troposphere") in which they document the presence of chlorine and
- > bromine in the stratosphere from oceanic sources, noting that there is much
- > more chlorine and bromine in the stratosphere than could be accounted for by
- > the direct injection of sea salt particles. Delany et al. write that there
- > is twice as much chlorine as "what would be expected to accompany the sodium
- > in the sea-salt component of the tropospheric aerosol, and bromine is present
- > in an approximately 200-fold excess."
- >
-
- More Larouchite pseudoscience.
-
- Twice practically nothing is still practically nothing. Look up the paper -
- it gives a mixing ratio for inorganic chlorine of <0.1 ppb at 11 km.
- (Which is about a factor of two larger than more recent studies that I
- have seen, see my reply to Woody Ligon.) Total organic chlorine at this
- altitude was more than 2.0 ppb.
-
- > From Maduro and Schauerhammer,
- >
- > "There has yet to be published a single scientific paper that presents any
- > documented _observations_ (italics his) of CFC molecules actually breaking
- > up in the stratosphere."
- >
-
- How about:
- CFC mixing ratios drop off rapidly with altitude in the strat.
- Inorganic chlorine mixing ratios rise rapidly.
- Reaction intermediates (e.g. COFCl) show up precisely where the CFC's
- are dropping off.
-
- Robert
-