60 Years to Restore the Ozone Layer Over Antarctica

Stephen Leahy*

TORONTO, Sep 20 (Tierramérica) – Another giant ozone hole has opened up over the Antarctic, while evidence mounts that 20 years of international efforts have finally helped the atmosphere to start to heal itself.

The “hole” over the South Pole — actually an annual thinning of the ozone layer, which protects Earth from the sun’s ultraviolet radiation — measured about 24 million square kilometres, nearly the size of North America, according to the Sep. 8 estimate by the renowned British Antarctic Survey, a scientific organisation that has been studying the region for the past six decades.

The ozone hole will continue to grow and likely be one of the larger and “deeper” ones, perhaps 28 million square kilometres, predicts Andrew Klekociuk of the Australian government’s Antarctic Division. The largest ever recorded was 30.3 million sq km in 2000, according to NASA, the U.S. space agency.

— Tierramerica and Inter Press News Service