Ozone Layer Record Loss 2011
GENEVA — The protective ozone layer in the Arctic that keeps out the sun’s most damaging rays – ultraviolet radiation – has thinned about 40 percent this winter, a record drop, the U.N. weather agency said Tuesday.
The Arctic’s damaged stratospheric ozone layer isn’t the best known “ozone hole” – that would be Antarctica’s, which forms when sunlight returns in spring there each year. But the Arctic’s situation is due to similar causes: ozone-munching compounds in air pollutants that are chemically trigged by a combination of extremely cold temperatures and sunlight.
To read more here: Ozone Layer Suffers Record 40-Percent Loss Over Arctic.