Media Information

 
 
 
Collection:
NASA Scientific Visualization Studio Collection
Title:
Chemical Model Animation of CFCs Releasing Chlorine to Form Reservoir Gases
Description:
CFCs being broken up by UV radiation and the formation of hydrogen chloride and chlorine nitrate from the resulting chlorine
Duration: 56.0 seconds
Abstract:
Most stratospheric chlorine comes from man-made compounds called chlorofluorocarbons or CFCs. CFCs, widely used in refrigerators and air conditioners, are quite harmless and non-reactive in the lower atmosphere. Carried slowly upward by the earth's winds, they can survive the 5 year journey to the upper stratosphere. Here, above most of the ozone layer, the sun's ultraviolet radiation breaks down the CFCs into the more reactive chlorine compounds that destroy ozone. Chlorine can react with methane to form hydrogen chloride. Chlorine can also react with ozone forming the radical chlorine monoxide. Chlorine monoxide then combines with the radical nitrogen dioxide to form stable chlorine nitrate. Chlorine nitrate and hydrogen chloride are called reservoir gases for the chlorine radical. These reservoir gases usually contain more than ninety percent of the chlorine in the lower stratosphere.
Completed:
1999-04-09
Credit:
*Please give credit for this visualization to*
NASA/Goddard Space Flight Center
Scientific Visualization Studio
Studio:
SVS
Animator:
James W. Williams (Lead)
Animator:
Greg Shirah
Animator:
Jesse Allen
Scientist:
Mark Schoeberl (NASA/GSFC)
Series:
UARS
Keywords:
SVS
Keywords:
Chlorofluorocarbons
note:
More Information on this topic available at
stories/UARS/ozone_m odels.html
Video:
SVS1999-1001* * *
facet_where:
Goddard Space Flight Center
facet_where:
Earth
facet_where:
Sun
facet_what:
Earth
facet_what:
Sun
facet_what:
UARS
Animation Number:
826
UID:
SPD-SCIVS-http://svs .gsfc.nasa.gov/vis/a 000000/a000800/a0008 26/a000826-IMAGE
original url:

Chemical Model Animation of CFCs Releasing Chlorine to Form Reservoir Gases