Antarctic ozone hole

Antarctic ozone hole

[ant¦ärt·ik ′ō‚zōn ‚hōl]
(meteorology)
In the spring, the depletion of stratospheric ozone over the Antarctic region, typically south of 55° latitude, the formation of the hole is explained by the activation of chlorine and the catalytic destruction of O3, it occurs during September, when the polar regions are sunlit but the air is still cold and isolated from midlatitude air by a strong polar vortex. Also known as ozone hole.
References in periodicals archive ?
Two years after the discovery of the Antarctic ozone hole in 1985, nations of the world signed the Montreal Protocol on Substances that Deplete the Ozone Layer, which regulated ozone-depleting compounds.
The Antarctic ozone hole was exceptionally weak this year," said Paul A.
And while there has been a decline in ozone-depleting substances, "the 2015 Antarctic ozone hole was near-record in terms of size and persistence.
Since 2000, the average size of the Antarctic ozone hole in September has shrunk by about 4.
The eight papers describe the cause of the Antarctic ozone hole, trends in local air quality, the distribution and behavior of persistent organic pollutants around the globe, and the transformation of waste management into resource management.
WASHINGTON (CyHAN)- The 2015 Antarctic ozone hole area was larger and formed later than in recent years, said scientists from NASA and the National Oceanic and Atmospheric Administration (NOAA).
The intensification of winds around the Antarctic region has been linked by most scientists to anthropogenic climate change, although other influences could be natural or related to the Antarctic ozone hole.
The Suomi NPP OMPS delivered its first ozone measurements of the Antarctic ozone hole in October 2012, continuing a satellite record dating from the early 1970s.
Other projects on this list Nasa chronicles Dubai's progress include Antarctic Ozone Hole, Drought in Australia, Shrinking Aral Sea among several others.
Summary: TEHRAN (FNA)- The Antarctic ozone hole, which yawns wide every Southern Hemisphere spring, reached its annual peak on September 12, stretching 10.
Under the Antarctic ozone hole, highspeed winds bring large amounts of sea spray, which forms droplets and eventually clouds.
2006 Antarctic ozone hole most serious on record: WMO

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