Datoteka:Ozone cfc trends.png

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Sažetak

Opis
English: Ozone-depleting gas trends and equivalent chlorine effect. Combined chlorine and bromine in the lower atmosphere or troposphere from the most abundant chlorinated and brominated chemicals controlled by the Montreal Protocol. These changes are reflected in the upper atmosphere stratosphere (10-25 km), where most ozone loss occurs, with a delay (due to air transport) of 3-5 years. Bromine is included as an ozone-depleting chemical because although it is not as abundant as chlorine, it is 45 to 60 times more effective per atom in destroying stratospheric ozone. Earlier measurements showed that the peak of equivalent chlorine (chlorine + 45 (or 60) times bromine) occurred at the surface between mid-1992 and mid-1994.[1] The observed decrease is driven by a large and rapid decline in methyl chloroform and methyl bromide, gases that are regulated internationally by the Montreal Protocol. The initial decline in methyl bromide was larger than that expected from projections given in the WMO/UNEP 2002 Scientific Assessment to Ozone Depletion.[2][3]
Français : Tendances pour les gaz appauvrissant la couche d'ozone (et effet en équivalent-chlore). Chlore et brome sont les halogènes destructeurs d'ozone les plus abondants, ils sont contrôlés par le Protocole de Montréal qui a permis leur réduction globale dans la haute atmosphère stratosphère (10-25 km), où la plupart de l'ozone se crée. Les effets apparaissent avec un retard de 3 à 5 ans (dû au transport aérien des CFC). Le brome est bien moins abondant que le chlore, mais il est 45 à 60 fois plus efficace par atome pour détruire l'ozone stratosphérique. Des mesures antérieures ont montré que le pic en «équivalent-chlore» (chlore + 45 (ou 60) fois brome) s'est produit à la surface entre mi-1992 et mi-1994 [1].
La diminution observée est due à une baisse importante et rapide du chloroforme de méthyle et du bromure de méthyle, pesticide et biocide gazeux réglementés mondialement par le Protocole de Montréal|Protocole de Montréal. La baisse initiale du bromure de méthyle a été plus importante qu'attendue par les projections de l’évaluation scientifique OMM / PNUE de 2002 sur l’appauvrissement de la couche d’ozone. [2] [3]
Izvor

Prebačeno s en.wikipedia na Zajednički poslužitelj Prebacio suradnik Maksim. ftp://140.172.192.211/hats/Total_Cl_Br/totCl_2004.ps

from CMDL Data Archive: http://www.cmdl.noaa.gov/info/ftpdata.html
Autor
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Ostale inačice
  • Greenhouse gas trends
    Greenhouse gas trends
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Licencija

Public domain
Ova slika je u javnom vlasništvu jer sadrži materijale koji su izvorno iz Nacionalne oceanske i atmosferske administracije SAD, koja je nastala fotografiranjem ili izradom kao dio službenih dužnosti zaposlenika.

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References

  1. ↑ a b News Release Feb 6, 2001. Climate Monitoring and Data Laboratory (March 17). Archived from the original on 2006-09-29. Retrieved on 2006-01-15.
  2. ↑ a b CMDL Scientists find that ozone-depleting bromine is now on the decline. Climate Monitoring and Data Laboratory (June 9). Archived from the original on 2006-09-29. Retrieved on 2006-01-15.
  3. ↑ a b Halocarbons and other Atmospheric Trace Species. Climate Monitoring and Data Laboratory Summary Report #27 (March 17). Archived from the original on 2007-02-21. Retrieved on 2006-01-15.

Original edit history

Izvorna stranica s opisom bila je ovdje. Niže navedena suradnička imena odnose se na en.wikipedia.
Datum/Vrijeme Suradnik Komentar
9. lipnja 2005., 20:44 en:User:SEWilco /* References */ more complete version
2. travnja 2005., 21:16 en:User:SEWilco link to 3rd reference
2. travnja 2005., 15:34 en:User:Mozzerati /* References */ make into numbered list, but what's the last reference? It's not used? See [[Wikipedia:Footnote3]]
2. travnja 2005., 15:33 en:User:Mozzerati update {{endnote| template to be {{note| according to recent consensus. See [[Wikipedia:Footnote3]] and talk page.
18. ožujka 2005., 06:32 en:User:SEWilco updates
18. ožujka 3005., 05:33 en:User:SEWilco updates
18. ožujka 2005., 05:11 en:User:SEWilco CFC gas trends. ==Related images== <gallery> Image:Major greenhouse gas trends.png|Greenhouse gas trends </gallery> ==Source== {{PD-USGov-DOC-NOAA}} Source: http://www.cmdl.noaa.gov/hats/graphs/graphs.html or ftp://ftp.cmdl.noaa.gov/hats/graphs/

Povijest datoteke

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Datum/VrijemeMinijaturaDimenzijeSuradnikKomentar
sadašnja00:00, 3. listopada 2016.Minijatura za inačicu od 00:00, 3. listopada 2016.1.096 × 1.271 (123 KB)CmdrjamesonCompressed with pngout. Reduced by 46kB (27% decrease).
06:11, 6. listopada 2009.Minijatura za inačicu od 06:11, 6. listopada 2009.1.096 × 1.271 (169 KB)Robert SkyhawkUpdated information current to 2008. Upload requested by English Wikipedia user Tobus2 via Images for Upload.
21:38, 15. siječnja 2006.Minijatura za inačicu od 21:38, 15. siječnja 2006.1.139 × 1.577 (24 KB)MaksimLa bildo estas kopiita de wikipedia:en. La originala priskribo estas: 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 [

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