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Nature 415, 360-362 (24 January 2002) | doi:10.1038/415360a

Making waves

Larry O'Hanlon1

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Pulses of energy called planetary waves traverse the globe, protecting the Arctic ozone layer and influencing weather and climate. Atmospheric scientists are now realizing just how important they are, says Larry O'Hanlon.

At their largest scale, they straddle the Earth. Without them, ozone depletion in the stratosphere would be worse and more frequent than it is now.