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CO2 - Causing Hot Cold Ozone Destroying Arctic Death

Weather eye: destruction of Arctic ozone | The Times
Paul Simons
April 2 2011
Spring is here, but in the Arctic the arrival of sunshine after the long winter darkness has caused a serious problem. During the past few weeks, about half the ozone in the stratosphere 20km (12 miles) above the Arctic has been destroyed. The combination of sunlight and man-made pollution from chlorofluorocarbons slashed ozone levels for March close to the lowest recorded levels.
Each winter a giant vortex of cold air whirls around the polar region, virtually sealed off from the rest of the global atmosphere. In this freezing vortex, the stratosphere grows intensely cold and this winter it reached very low temperatures, down to minus 83C (-117F) on March 10. In these conditions strange iridescent clouds of ice form in the stratosphere, glowing with the surreal colours of mother-of-pearl.
But when the spring sunshine reappears, those stratospheric clouds act as a springboard for the sunlight and chlorine pollution to destroy ozone.....
Despite the ban on ozone-depleting chemicals, the ozone layer will remain vulnerable for many years, because chlorine already in the stratosphere takes a long time to disappear. Added to that, the lower stratosphere globe has been growing steadily colder over recent decades thanks to carbon dioxide. Although CO2 warms the lower atmosphere, it has the opposite effect in the upper atmosphere, radiating heat back into space. And in a further twist, the lack of ozone also adds to the cooling of the stratosphere, helping to destroy more ozone at the poles.

Comments

Yup, there's no help for it, we have to go back to drinking untreated water and living in unheated mud and thatch houses and cooking on charcoal - oh! Wait! Making charcoal causes CO2, con't have that either. Sorry folks, it's back to wandering about naked, and eating fruit and nuts only... No animals or meat eating, no cultivation (you need a horse to plough and a forge to make one) and no skins or cotton or linen or wool to make clothes ...

Sorry, con't do that either. All that fruit would cause an excess of Himan produced Methane...

'Although CO2 warms the lower atmosphere, it has the opposite effect in the upper atmosphere, radiating heat back into space.'

The re-radiation is directional? How's that happen then? Why is it different in the lower atmosphere?

What's the source of these CFCs? Aerosols using them as propellants were phased out years ago.

Yep, if we have a cold winter followed by erratic but freezing gales introducing us to spring, we can pretty much guarantee "large ozone hole" stories around the August-September mark. ("here" is the arse end of NZ and the gales are from cold air bursting out of the Antarctic after being locked in there for month or two). The "hole" could be about O3 not being generated due to extreme cold and lack of sunlight for an extended period and a fair proportion of what O3 was there decaying to O2, or it could be due to the heavier than air inert gas refrigerant that hasn't leaked out of my old round cornered beer fridge in the shed.

Under the Treaty of Montreal, CFCs are still allowed to be produced in India and China, and will continue to be produced until 2030, iirc.

What was the state of the ozone layer over the pole (either pole) in local early Spring 1911? Or local early Spring 1811? Or early Spring - well, you get the idea: the answer is that nobody knows, because nobody was measuring it.

If you take a large body of air which contains a little bit of ozone (largely generated by the action of sunlight), isolate it, and cut it off from sunlight for several months, what do you think will happen?

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