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Extended Arctic Ozone Depletion In 1997 Related To Prolonged Polar Vortex

Date:
January 13, 1999
Source:
American Geophysical Union
Summary:
Ozone depletion in the Arctic has been less extensive than the corresponding phenomenon in the Antarctic, but it has been observed during the late 1990's and reached record high levels during the winters of 1995-1996 and 1996-1997. The latter winter was also marked by an extremely long-lived Arctic polar stratospheric vortex, a low pressure system occurring between 14 and 35 kilometers [8-21 miles] altitude.

WASHINGTON, D.C. -- Ozone depletion in the Arctic has been less extensive than the corresponding phenomenon in the Antarctic, but it has been observed during the late 1990's and reached record high levels during the winters of 1995-1996 and 1996-1997. The latter winter was also marked by an extremely long-lived Arctic polar stratospheric vortex, a low pressure system occurring between 14 and 35 kilometers [8-21 miles] altitude. The vortex is formed during the polar winter, when the lack of sunlight lowers the temperature and produces a circular wind system. Atmospheric scientists believe that the formation of the vortex is a key step in providing the chemical conditions for ozone depletion.


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American Geophysical Union. "Extended Arctic Ozone Depletion In 1997 Related To Prolonged Polar Vortex." ScienceDaily. ScienceDaily, 13 January 1999. <www.sciencedaily.com/releases/1999/01/990113080314.htm>.
American Geophysical Union. (1999, January 13). Extended Arctic Ozone Depletion In 1997 Related To Prolonged Polar Vortex. ScienceDaily. Retrieved April 18, 2014 from www.sciencedaily.com/releases/1999/01/990113080314.htm
American Geophysical Union. "Extended Arctic Ozone Depletion In 1997 Related To Prolonged Polar Vortex." ScienceDaily. www.sciencedaily.com/releases/1999/01/990113080314.htm (accessed April 18, 2014).

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