Earth  ID: 3586

What Would have Happened to the Ozone Layer if Chlorofluorocarbons (CFCs) had not been Regulated?

Led by NASA Goddard scientist Paul Newman, a team of atmospheric chemists simulated 'what might have been' if chlorofluorocarbons (CFCs) and similar ozone-depleting chemicals were not banned through the Montreal Protocol. The comprehensive model — including atmospheric chemical effects, wind changes, and solar radiation changes — simulated what would happen to global concentrations of stratospheric ozone if CFCs were continually added to the atmosphere.

The visualizations below present two cases, from several different viewing positions: the 'world avoided' case, where the rate of CFC emission into the atmosphere is assumed to be that of the period before regulation, and the 'projected' case, which assumes the current rate of emission, post-regulation. Both cases extrapolate to the year 2065.



Visualization Credits

Trent L. Schindler (UMBC): Lead Animator
Lori Perkins (NASA/GSFC): Animator
Paul Newman (NASA/GSFC): Interviewee
Jefferson Beck (UMBC): Producer
Paul Newman (NASA/GSFC): Scientist
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NASA/Goddard Space Flight Center Scientific Visualization Studio

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This item is part of these series:
Narrated Movies

Goddard TV Tape:
G2009-018 -- Ozone World Avoided

SVS >> Ozone Hole
SVS >> Ozone depletion
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GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version