Ozone hole over Antarctica larger than usual this year

BERLIN – Scientists say the hole in the Earth’s protective ozone layer over the Southern Hemisphere is larger than usual this year and already surpasses the size of Antarctica.

The European Union’s Copernicus Atmosphere Monitoring Service said Thursday that the so-called ozone hole, which appears every year during the Southern Hemisphere spring, has grown considerably in the past week following an average start.

“Forecasts show that this year’s hole has evolved into a rather larger than usual one,” said Vincent-henri Peuch, who heads the EU’S satellite monitoring service.

Atmospheric ozone absorbs ultraviolet light coming from the sun. Its absence means more of this high-energy radiation reaches the Earth, where it can harm living cells.

Peuch noted that last year’s ozone hole also started out as unremarkable but then turned into one of the longest-lasting on record.

The Montreal Protocol, signed in 1987, led to a ban on a group of chemicals called halocarbons that were blamed for exacerbating the annual ozone hole.