atmospheric science

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Fixing a hole

31 years on from the international treaty which banned CFCs, Reading atmospheric scientist Michaela Hegglin reflects on what’s been achieved and whether we’ve really solved the problem of ozone layer depletion.

False-colour view of the total ozone over the Antarctic pole.

False-colour view of total ozone over the Antarctic pole. The purple and blue indicates where there is the least ozone, and the yellows and reds are where there is more ozone. Image credit: NASA Ozone Watch

Today is International Day for the Preservation of the Ozone Layer. Ever heard of it? Some of you may know that a crucial treaty got signed on that very day in 1987, but not that the United Nations would have marked this historical event by giving it the status of an International Day. There is a pretty good reason for it.

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By Professor Paul D. Williams and Luke N. Storer, Department of Meteorology, University of Reading

The study makes turbulence projections for multiple global regions

Our new study calculating that climate change will strengthen aviation turbulence has caused a stir on social media. Most of the online comments about the article have been positive – albeit expressing a little anxiety at the prospect of experiencing double the amount of severe turbulence later this century.

The new paper, as well as our previous study on this topic in Nature Climate Change, was peer-reviewed by international experts in aviation turbulence and found to be scientifically correct. However, as is commonplace in the public discussion about climate science today – at a time when opinions seem to count more than evidence and facts – a small number of non-expert commentators have misunderstood the scientific details and attempted to discredit the findings.

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