Stratospheric Ozone Brent Greenhalgh and Carrie Welker Reviews in Earth Science Oct. 4, 2011
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Stratospheric Ozone Brent Greenhalgh and Carrie Welker Reviews in Earth Science Oct. 4, 2011 September 17, 1979 October 1, 2010 (NASA, 2011-1)
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Stratospheric Ozone Brent Greenhalgh and Carrie Welker Reviews in Earth Science Oct. 4, 2011. September 17, 1979. October 1, 2010. (NASA, 2011-1). Natural State of Stratospheric Ozone. Ozone (O 3 ) is very small part of atmosphere ~90% of ozone is in the stratosphere - PowerPoint PPT Presentation
Transcript of Stratospheric Ozone Brent Greenhalgh and Carrie Welker Reviews in Earth Science Oct. 4, 2011
Stratospheric OzoneBrent Greenhalgh and Carrie Welker
Reviews in Earth ScienceOct. 4, 2011
September 17, 1979
October 1, 2010
(NASA, 2011-1)
Natural State of Stratospheric Ozone
Ozone (O3) is very small part of atmosphere
~90% of ozone is in the stratosphere
Protects life from solar UV radiation
Inverse T profile in stratosphere
Total ozone ranges from 200-500 DU
UV radiation
O3
êO2 + O + heat
Natural variation of stratospheric
ozone1) Air Motions
Ozone changes with latitude from stratospheric wind patterns
Weather systems
2) Chemical
11-year solar cycle causes 1-2% change in ozone
Volcanic eruptions deplete ozone for a few years
Anthropogenic Change
(NASA, 2011-1)
Montreal Protocol & Projections
(U.N, n.d.)
