The chemistry of stratospheric ozone depletion
Journal Article
·
· Heating, Piping and Air Conditioning
OSTI ID:445371
- National Oceanic and Atmospheric Administration, Boulder, CO (United States). Aeronomy Lab.
In the early 1980`s the Antarctic ozone hole was discovered. The ozone loss was 50 percent in the lower stratosphere during springtime, which is made possible by the conditions over Antarctica in winter. The absence of sunlight in the stratosphere during polar winter causes the stratospheric air column there to cool and sink, drawing air from lower latitudes into the upper stratosphere. This lower-latitude air gets closer to the Earth`s axis of rotation as it moves poleward and is accelerated by the need to conserve angular momentum to greater and greater westerly wind speeds forming a vortex bounded by the polar night jet stream. The air entering the vortex contains reactive ozone-destroying species. The observed ozone losses occurred concurrently with increases of chlorofluorocarbon increases.
- OSTI ID:
- 445371
- Journal Information:
- Heating, Piping and Air Conditioning, Journal Name: Heating, Piping and Air Conditioning Journal Issue: 1 Vol. 69; ISSN HPAOAM; ISSN 0017-940X
- Country of Publication:
- United States
- Language:
- English
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