User talk:Rparson
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Meelar (talk) 20:22, Jan 3, 2005 (UTC)
[edit] Hello, is that you?
(William M. Connolley 23:01, 7 Jan 2005 (UTC)) Hello, and welcome, whichever R Parsons you are. But if you happen to be *the* R Parsons of ozone FAQ fame, you are especially welcome!
As to the ozone page... I see I was watching it, but haven't done much to it (compared to ozone depletion it was relatively uncontroversial, and I think I forgot about it). So... if you want to improve it, please do!
[edit] Complete IPCC List of Greenhouse Gases
(William M. Connolley 20:17, 20 Apr 2005 (UTC)) Hi. I've just removed (*note: While the IPCC document containing this data (see below) explicitly states that these gases have no effect on ozone depletion, it is generally accepted that they do. However, in order to maintain consistency with the IPCC table, its formatting is retained) from Complete IPCC List of Greenhouse Gases. The note refers to HFC-23, 134a and 152a. I thought these were CFC replacements designed to break down so as not to cause ozone depletion. Do you know? Ozone depletion and Montreal Protocol don't seem to mention this, and perhaps they should?
Rparson 02:49, 10 May 2005 (UTC) Hello William - sorry for the late response, it's been ages since I logged into Wikipedia. HFC's are hydrofluorocarbons. They contain no chlorine and have zero potential for ozone depletion. You were probably thinking of HCFCs (hydrochlorofluorocarbons) - these do release chlorine, but have much lower ozone depletion potentials than CFC's because the hydrogen atoms make them reactive in the troposphere so much less of the Cl is released in the stratosphere. I'll take a look at Ozone Depletion when Iget a chance.
