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Article: Northern hemisphere ozone hits record low. (during December 1992, January 1993 and February 1993)
- Article from:
- Science News
- Article date:
- March 20, 1993
- Author:
CopyrightCOPYRIGHT 1993 Science Service, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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The north has taken center stage in the fast-moving global ozone drama. Six months ago, world attention focused on the extreme south when atmospheric scientists reported that the yearly ozone hole over Antarctica had expanded over a record area. Now the spotlight has shifted to the opposite end of the Earth as researchers announce finding substantially less than normal ozone over much of the northern hemisphere during the last three months.
Rumen D. Bojkov, an atmospheric scientist with the United Nations' World Meteorological Organization in Geneva, reports that concentrations of stratospheric ozone measured 9 to 20 percent below average in the middle and high ...