Good News on Warming: Ozone Hole Is Smallest Since 1988
By Stephanie Pappas, Live Science Contributor | November 3, 2017 02:27pm ET
The ozone hole over Antarctica shrunk to its smallest maximum-extent in September 2017. Here, in this false-color view of the monthly-averaged total ozone the blue and purple indicate areas with the least ozone, while yellows and reds mean the most ozone.
Higher temperatures over Antarctica this year shrank the hole in the ozone layer to the smallest it's been since 1988.
The ozone hole is a depletion of ozone gas (O3) in the stratosphere above Antarctica. The three-oxygen molecule is toxic at ground level, but high in the atmosphere, it deflects dangerous ultraviolet rays from reaching Earth's surface.
https://www.livescience.com/60858-smallest-ozone-hole-over-antarctica.html
