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Ozone layer

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These clouds – formed high in the Antarctic atmosphere during spring – provide a place where ozone-destroying chemicals can form. sandwich/Flickr

Ozone hole closing for the year, but full recovery is decades away

Imagine an environmental crisis caused by a colourless, odourless gas, in minute concentrations, building up in the atmosphere. There is no expert consensus, but in the face of considerable uncertainty…
Antarctica has actually been protected from sea ice melt by the ozone hole. Vassil Tzvetanov

The ozone hole leaves a lasting impression on southern climate

Many people think of sunburn and skin cancer when they hear about the ozone hole. But more ultraviolet (UV) radiation isn’t the only problem. The ozone hole has also led to dramatic changes in Southern…
In 2012 and 2013 parts of New Zealand suffered the worst drought in 70 years. Dave Young/Flickr

New Zealand is drying out, and here’s why

Over 2012 and 2013, parts of New Zealand experienced their worst drought in nearly 70 years. Drought is the costliest climate extreme in New Zealand; the 2012-2013 event depressed the country’s GDP by…
Antarctica’s ozone hole has just got four new sources. PD-USGOV-NASA

Earth’s ozone layer threatened by new man-made gases

Scientists at the University of East Anglia have discovered new man-made gases that are contributing to the depletion of the Earth’s ozone layer. Three new Chlorofluorocarbons (CFCs), which act to destroy…
This, the biggest hole in September 2006, was matched in 2011 despite the downward trend. NASA

Antarctic ozone recovery will be a long and bumpy road

It’s been nearly 30 years since the discovery of the ozone hole over Antarctica, and the realisation that chlorine, in the form of chlorofluorocarbons or CFCs, was the chemical culprit behind the depletion…
Australia had a special interest in fixing the ozone hole. Jon Tunley

Setting a good example: Australia and the ozone layer

SAVING THE OZONE: The final part our series exploring the Montreal Protocol on Substances that Deplete the Ozone Layer – dubbed “the world’s most successful environmental agreement” – looks at Australians…
Around 90% of ozone is located in the lower stratosphere (beginning at a height of between 10-16 km above the ground). Flickr/NASA Earth Observatory

Measuring the missing molecules: a history of overseeing ozone

SAVING THE OZONE: Part eight in our series exploring the Montreal Protocol on Substances that Deplete the Ozone Layer – dubbed “the world’s most successful environmental agreement” – looks at how we measure…
Reduced ozone means increased UV radiation, and that leads to skin cancer. Tracey Lawson

Saving the ozone layer saved human lives

SAVING THE OZONE: Part seven in our series exploring on the Montreal Protocol on Substances that Deplete the Ozone Layer – dubbed “the world’s most successful environmental agreement” – explains how the…
Understanding Venus' atmosphere helps us understand Earth’s past, present, and a potential future. Keith Mosley

What Venus has taught us about protecting the ozone layer

SAVING THE OZONE: Part six in our series exploring the Montreal Protocol on Substances that Deplete the Ozone Layer – dubbed “the world’s most successful environmental agreement” – looks at the atmosphere…
Is there a relationship between the ozone hole over Antarctica and the global climate? AAP/Dean Lewins

The Antarctic ozone hole and climate change: an anniversary worth celebrating

SAVING THE OZONE: Part five in our series exploring the Montreal Protocol on Substances that Deplete the Ozone Layer – dubbed “the world’s most successful environmental agreement” – explores the parallels…
By collecting air at pristine Cape Grim since 1978, scientists have been able to track the concentration of ozone depleting substances. AAP/Bureau of Meteorology

What are ozone depleting substances?

SAVING THE OZONE: Part four in our series exploring the Montreal Protocol on Substances that Deplete the Ozone Layer – dubbed “the world’s most successful environmental agreement” – looks at the substances…
This is bad, but it would be a lot worse without the ozone layer. garth.kennedy/Flickr

How does the ozone layer protect Earth from radiation?

SAVING THE OZONE: Part three in our series exploring on the Montreal Protocol on Substances that Deplete the Ozone Layer – dubbed “the world’s most successful environmental agreement” – explains why we…
For more than three decades Antarctica has experienced the most severe depletion of stratospheric ozone. NASA Goddard Photo and Video

Explainer: what is the Antarctic ozone hole and how is it made?

SAVING THE OZONE: Part two in our series exploring on the Montreal Protocol on Substances that Deplete the Ozone Layer – dubbed “the world’s most successful environmental agreement”. Yesterday’s article…
The Montreal Protocol negotiators should get a lot of credit for developing such a flexible treaty. hhesterr/Flickr

Saving the ozone layer: why the Montreal Protocol worked

SAVING THE OZONE: It might not seem so long ago that the discovery of the hole in the ozone layer over Antarctica had us in a frenzy over CFCs in hairsprays and insecticides. In fact, on September 16 2012…

Why has the ozone hole spread to the Arctic?

An international team of scientists has unravelled how the first ozone hole over the Arctic formed last spring. A comprehensive…
A bigger hole in the ozone layer over Northern Hemisphere countries could mean more UV damage to humans, animals and plants. Flickr/cdsessums

Arctic ozone hole grew at record speed in 2011

A hole in the Arctic ozone layer grew at unprecedented levels this year, a new study has found, exposing densely populated…

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