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In fact, ozone levels drop so low in spring in the Southern Hemisphere that scientists have observed what they call a "hole" in the ozone layer. The ozone destruction process ... However, after reaching its maximum size, the Ozone Hole diminished in size such that it was just the 17th largest for the month of October.
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www.theozonehole.com/ozoneholehistory.htm
www.theozonehole.com/ozoneholehistory.htm
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NASA Data Reveals 'Average' Ozone Hole in 2007; Each year, the depleted region in Earth's protective ozone layer over the Antarctic, or "ozone hole," reaches its largest size during a period in September.
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www.nasa.gov/vision/earth/environment/ozone_resource_pa...
www.nasa.gov/vision/earth/environment/ozone_resource_page.html
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Scientists originally predicted that the ozone layer would be the thinnest around 2008, then start recovering. But new research shows that other air pollution problems are slowing down the ozone layer s ability to rebound. ... earth with ozone hole...
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www.dnr.state.wi.us/org/caer/ce/eek/earth/air/ozonlayr....
www.dnr.state.wi.us/org/caer/ce/eek/earth/air/ozonlayr.htm
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ENVIRONMENT: NEW RECORD IN SIZE OF HOLE IN OZONE LAYER; Geneva, Oct 1 (IPS/Gustavo Capdevila) -- The hole in the ozone layer over the Antarctic reached a record size last month, the World Meteorological Organisation (WMO) reported Thursday.
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www.sunsonline.org/trade/process/followup/1998/10050598...
www.sunsonline.org/trade/process/followup/1998/10050598.htm
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The hole in the ozone layer above Antarctica has beaten the record size logged six years ago the United Nations weather agency says The World Meteorological Organisation (WMO) says data from ... Record size: The ozone layer hole is situated over the Antarctic. (ABC TV)
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www.abc.net.au/news/newsitems/200610/s1754959.htm
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"We expect the size of the ozone hole to be in the same region as in 2000 and 2003 but not to break any record," Dr Braathen said at a press conference to mark the International Day for the Preservation of the Ozone Layer.
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www.abc.net.au/news/newsitems/200509/s1462434.htm
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Over the past several years the annual ozone hole over Antarctica has remained about the same in both its size and in the thickness of the ozone layer.
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www.gsfc.nasa.gov/topstory/20011016ozonelayer.html
www.gsfc.nasa.gov/topstory/20011016ozonelayer.html
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In 2001, the ozone layer thinning over Antarctica reached 26.5 million square kilometers, larger than the size of the entire North American continent. Due to higher Antarctic winter temperatures, the 2002 'hole' seems to be about 40% smaller.
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www.gsfc.nasa.gov/topstory/20020926ozonehole.html
www.gsfc.nasa.gov/topstory/20020926ozonehole.html
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The data below shows that since the Montreal protocol came into force, the size of the ozone hole has increased in size by 36%. The hole was around the size of Cuba in 1979 (130,000 sq km) and has grown to the size of North America today (25 million sq km). ... • DATA: Size of hole in ozone layer...
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www.guardian.co.uk/environment/datablog/2009/sep/02/siz...
www.guardian.co.uk/environment/datablog/2009/sep/02/size-ozone-hole-layer
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