File talk:Ozone cfc trends.png

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• [2005-03-18T05:11:36Z] SEWilco (CFC gas trends. ==Related images== <gallery> Image:Major greenhouse gas trends.png|Greenhouse gas trends </gallery> ==Source== {{PD-USGov-DOC-NOAA}} Source: --www.cmdl.noaa.gov/hats/graphs/graphs.html or --ftp.cmdl.noaa.gov/hats/graphs/)
• [2005-03-18T05:33:46Z] SEWilco (updates)
• [2005-03-18T06:32:02Z] SEWilco (updates)
• [2005-04-02T15:33:08Z] Mozzerati (update {{endnote| template to be {{note| according to recent consensus. See [[Wikipedia:Footnote3]] and talk page.)
• [2005-04-02T15:34:41Z] Mozzerati (/* References */ make into numbered list, but what's the last reference? It's not used? See [[Wikipedia:Footnote3]])
• [2005-04-02T21:16:52Z] SEWilco (link to 3rd reference)
• [2005-06-09T20:44:57Z] SEWilco (/* References */ more complete version)
• [2006-03-05T12:40:58Z] Ligulembot (replacing deprecated {{web reference}} with {{[[template:cite web|cite web]]}} using [[Wikipedia:AutoWikiBrowser|AWB]])
• [2006-10-12T16:36:32Z] Sande6

Original title:

• Ozone_cfc_trends.png

Upload log:

• (del) (cur) 06:34, 18 March 2005 . . SEWilco (Talk | contribs) . . 1139×1577 (24,302 bytes) (updated image)
• (del) (rev) 05:11, 18 March 2005 . . SEWilco (Talk | contribs) . . 2042×2831 (96,846 bytes) (CFC gas trends. ==Related images== <gallery> Image:Major greenhouse gas trends.png|Greenhouse gas trends </gallery> ==Source== {{PD-USGov-DOC-NOAA}} Source: --www.cmdl.noaa.gov/hats/graphs/graphs.html or --ftp.cmdl.noaa.gov/hats/graphs/)

Text:

CFC gas trends and equivalent chlorine effect. Combined [[chlorine]] and [[bromine]] in the lower [[stratosphere]] (10-25 km), where most [[ozone]] loss occurs, leveled off around [[1999]]. Bromine is included as an ozone-depleting chemical because although it is not as abundant as chlorine, it is 45 times more effective per atom in destroying stratospheric ozone. Earlier measurements showed that the peak of '''equivalent chlorine''' (chlorine + 45 times bromine) had already occurred at the surface between mid-[[1992]] and mid-[[1994]].
{{ref|CMDL20010206}}
The observed decrease is driven by a large and rapid decline in [[methyl bromide]], a brominated gas that is regulated internationally by the [[Montreal Protocol]]. It is larger than that expected from model calculations as given in the WMO/UNEP 2002 Scientific Assessment to Ozone Depletion.
{{ref|CMDL20030815}}
{{ref|CMDL27hats5}}

==Related images==
<gallery> Image:Ozone cfc decline.png|Decline in ozone-depleting gas effects Image:Major greenhouse gas trends.png|Greenhouse gas trends </gallery>
==References==
#
{{note|CMDL20010206}}

{{cite web | title=News Release Feb 6, 2001 | work=Climate Monitoring and Data Laboratory | url=--www.cmdl.noaa.gov/hotitems/storyDetail_org.php?sid=124 | accessdate=March 17 | accessyear=2005}}
#
{{note|CMDL20030815}}

{{cite web | title=CMDL Scientists find that ozone-depleting bromine is now on the decline | work=Climate Monitoring and Data Laboratory | url=--www.cmdl.noaa.gov/hotitems/bromine.html | accessdate=June 9 | accessyear=2005}}
#
{{note|CMDL27hats5}}

{{cite web | title=Halocarbons and other Atmospheric Trace Species | work=Climate Monitoring and Data Laboratory Summary Report #27 | url=--www.cmdl.noaa.gov/publications/annrpt27/hats5.pdf | accessdate=March 17 | accessyear=2005}}

==Source==

{{PD-USGov-DOC-NOAA}}
Source: ftp://140.172.192.211/hats/Total_Cl_Br/totCl_2004.ps from CMDL Data Archive: --www.cmdl.noaa.gov/info/ftpdata.html

Poccil 19:52, 15 October 2006 (UTC)