<
https://theconversation.com/the-ozone-hole-above-antarctica-will-keep-opening-up-each-spring-for-decades-to-come-heres-why-that-still-matters-237013>
"At this time of year, as the sun rises over Antarctica, a “hole” opens up in
Earth’s ozone layer.
The ozone layer is a vital planetary boundary that protects all life on Earth
from the sun’s damaging ultraviolet radiation. But as our research shows, a
series of unusual events in recent years caused ozone holes that lasted longer.
The Montreal Protocol, which came into force just four years after the ozone
hole was discovered in 1985, has been enormously successful in preventing many
ozone-depleting gases from entering the atmosphere.
But the hole will continue to open each year for at least another four decades
because of the long lifetimes of gases emitted last century.
Ozone depletion is also linked with climate change, and there are other
emerging issues which could affect ozone recovery. These include more frequent
mega-wildfires due to climate change, emissions from rocket launches and more
satellite debris burning up in the upper atmosphere.
All this indicates ozone depletion is far from a solved problem."
Cheers,
*** Xanni ***
--
mailto:xanni@xanadu.net Andrew Pam
http://xanadu.com.au/ Chief Scientist, Xanadu
https://glasswings.com.au/ Partner, Glass Wings
https://sericyb.com.au/ Manager, Serious Cybernetics
