Click to get your own widget

Saturday, April 23, 2011


About the only "environmental" scare story over the last 50 years, out of hundreds, which hasn't been proven wrong is the CFC Ozone Hole link.

No longer. They told us that it would take about 50 years after giving up CFCs for the hole to start closing but it did so immediately, which might suggest the effect was more instantaneois or it might have been connected with the fact that the volcanic Mount Erebus had stopped spewing out millions of tons of sulphur dioxide. Dodgy but not disproven then.

However now the hole has started expanding again, which simply cannot be because of an increase in CFCs necause they aren't - supporting the view that it has been varying throughout history it is just that nobody noticed, because it was having no effect, and until recently nobody had used instruments that could measure the amount of UV getting through there.

Piling Irony on irony the current expansion is being blamed on the excessively LOW temperatures being recorded, in this era of alleged catastrophic warming and melting ice caps.

On top of that this article dissects how the story is being dishnonestly spun by the BBC etc.
"13 April 2011 - "The ozone layer has seen unprecedented damage in the Arctic this winter due to cold weather in the upper atmosphere," said this article last week by BBC environmental correspondent Richard Black.

"By the end of March, 40% of the ozone in the stratosphere had been destroyed, against a previous record of 30%," says Black.

Severe ozone depletion has been seen over Scandinavia, Greenland, and parts of Canada and Russia.

It must have pained the BBC to publish this, because their headline - "Arctic ozone levels in never-before-seen plunge" - carefully avoids the word "cold."

However, I will give them credit for admitting - in the very first paragraph - that the damage is due to cold weather in the upper atmosphere.

Then, in an apparent attempt to switch the focus onto humans, Black reminds us that ozone "is destroyed by reactions with industrial chemicals."

"We have some winters that get much colder than before and also the cold periods last longer, into the spring," said Braathen. "The destructive reactions are promoted by cold conditions (below -78C) in the stratosphere."

Did you know that cold weather had
anything to do with the so-called "ozone hole"?

"Usually in cold winters we observe that about 25% of the ozone disappears, but this winter was really a record - 40% of the column has disappeared," said Dr Florence Goutail from the French National Centre for Scientific Research.

"Research by Markus Rex from the Alfred Wegener Institute in Germany suggests that winters that stand out as being cold in the Arctic stratosphere are getting colder."

Meanwhile, MSNBC also covered this subject. On the same day, as a matter of fact. But for some reason, they mentioned the colder weather only once."

Labels: , ,

Comments: Post a Comment

<< Home

This page is powered by Blogger. Isn't yours?

British Blogs.