Home Top Trending The Ozone Layer is Healing!!! It Is Redirecting Wind Flows Around...

[Ozone Update] The Ozone Layer is Healing!!! It Is Redirecting Wind Flows Around The Globe!!!

The hole in the ozone layer above Antarctica is continuing to recover and it is leading to changes in atmospheric circulation – the flow of air over Earth’s surface that causes winds.

Using data from satellite observations and climate simulations, Antara Banerjee at the University of Colorado Boulder and her colleagues modeled changing wind patterns related to the layer’s recovery. Its healing is largely thanks to the Montreal Protocol agreed internationally in 1987, which banned the production of ozone-depleting substances.

Before 2000, a belt of air currents called the mid-latitude jet stream in the southern hemisphere had been gradually shifting towards the South Pole. Another tropical jet stream called the Hadley cell, responsible for trade winds, tropical rain-belts, hurricanes, and subtropical deserts had been getting wider.

In terms of ozone layer recovery, “we have turned the corner”, says Martyn Chipperfield at the University of Leeds in the UK, who wasn’t involved in the study. He says we had already seen signs that the ozone layer is recovering and that this study represents the next step, which is seeing the effect of that recovery on the climate.

[Ozone Update] The Ozone Layer is Healing!!! It Is Redirecting Wind Flows Around The Globe!!!

Chipperfield says it is important to know which aspects of climate change have been caused by carbon dioxide emissions, which are continuing to rise, versus ozone depletion, which is now stopping and reversing.

Despite the ban on ozone-depleting substances, these chemicals have very long lifetimes in the atmosphere, so full ozone recovery isn’t expected to take place for several decades.

The ozone layer will also recover at different speeds in different parts of the atmosphere, says Banerjee. For instance, the ozone layer is expected to recover to the 1980s levels by the 2030s for the northern hemisphere mid-latitudes and by the 2050s for the southern mid-latitudes, she says, while the Antarctic ozone hole will probably recover a bit later in the 2060s.

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