Topic: Daffs with no sense of timing

[Robert_Brenchley]

The hole in the ozone layer was going to be the big killer a few years ago, but that has healed, and I don't belive we healed it, it may have been a natural phenomenon, research didn't go back far enough to give any conclusive proof.

It's still there, it just isn't getting the publicity it used to. We've stopped putting a lot of the gases causing it into the atmosphere, but it's going to take till about the middle of the century before ozone levels (hopefully) return to 1970's levels. Trouble is, it takes anything up to a century for some of these gases to decay. As for it's being a 'natural' phenomenon, that went out of the window long since. CFC's and similar gases break down and release chlorine, which then acts as a catalyst, breaking down large quantities of ozone.

[jennym]

Article re NASA report on the hole in the ozone layer over Antarctica:
http://www.timesonline.co.uk/article/0,,3-2414002,00.html

[Deeds]

Not my theory Trixibelle - maybe you're not familiar with the Gaia hypothesis first published by James Lovelock in the 1960's.
http://www.gaianet.fsbusiness.co.uk/gaiatheory.html.

Maybe it's the scientist in me, but it makes excellent sense.

[Deeds]

The hole in the ozone layer was going to be the big killer a few years ago, but that has healed, and I don't belive we healed it, it may have been a natural phenomenon, research didn't go back far enough to give any conclusive proof.

It's still there, it just isn't getting the publicity it used to. We've stopped putting a lot of the gases causing it into the atmosphere, but it's going to take till about the middle of the century before ozone levels (hopefully) return to 1970's levels. Trouble is, it takes anything up to a century for some of these gases to decay. As for it's being a 'natural' phenomenon, that went out of the window long since. CFC's and similar gases break down and release chlorine, which then acts as a catalyst, breaking down large quantities of ozone.

Strange how interpretation can mean different things to different people.
I use this site, and it shows a decrease and suggests that volcanic activity has a large effect on it too.
http://ozonewatch.gsfc.nasa.gov/

[Trixiebelle]

DEEDS! From the link you posted ...

"For me, the personal revelation of Gaia came quite suddenly - like a flash of enlightenment. I was in a small room on the top floor of a building at the Jet Propulsion Laboratory in Pasadena, California. It was the autumn of 1965 ... "

In the autumn of 1965 I was in a small delivery room in a city centre hospital having a flash of enlightenment of my own.  I'd just been born  ;D

[Robert_Brenchley]

Strange how interpretation can mean different things to different people.
I use this site, and it shows a decrease and suggests that volcanic activity has a large effect on it too.
http://ozonewatch.gsfc.nasa.gov/

But looking at the site, it shows the area of the hole in 2006 as equalling the largest recorded (26 000 000 sq km), and the level as sinking to 100 Dobson units, while the lowest recorded was 96. Where's the info about volcanoes? This page confirms the link with CFC's. http://ozonewatch.gsfc.nasa.gov/facts/history.html

[Amazin]

er... ahem!...  my daffs are still flowering!

 ;D

[Mrs Ava]

Well, after a visit to the allotment, I am proud to say that my dafffs aren't going to flower for at least another 2 or 3 weeks.  Some have buds, but they are still very small indeed.