New Record Antarctic Ozone Loss

Technocrat

New Record Antarctic Ozone Loss

zogger

Mon Oct 02 16:42:27 -0700 2006

Science

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The ESA Envisat has given researchers the data they need to quantify this seasons Antarctic ozone hole. The bad news, a new record loss of protective ozone.

"Ozone measurements made by ESA’s Envisat satellite have revealed the ozone loss of 40 million tonnes on 2 October 2006 has exceeded the record ozone loss of about 39 million tonnes for 2000."..more there, some images and graphs highlighting how this came about and giving an historical perspective

caused by lowest antarctic termperature in 27 years

rubycodez

Mon Oct 02 17:03:48 -0700 2006
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or in last 50 years depending on how stats averaged. Wonder what caused that?

caused by lowest antarctic termperature in 27 years

Andrew Diseker

Mon Oct 02 17:38:30 -0700 2006
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    or in last 50 years depending on how stats averaged. Wonder what caused that?

Global warming, of course. Haven't you heard the news lately?

caused by lowest antarctic termperature in 27 years

rubycodez

Mon Oct 02 17:57:19 -0700 2006
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haha, a cold year on a continent is just weather. Global warming / climate change is over the whole planet and over a century of records.

The damage continues...

AB3A

Tue Oct 03 04:10:00 -0700 2006
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Despite the international treaties outlawing the use of CFC refrigerants, the CFCs which already are in the atmosphere are still working their way upstairs. They may continue to do so for another 50 years at least from what articles I've read.

I doubt this has much to do with global warming...

The damage continues...

Spider

Tue Oct 03 15:28:17 -0700 2006
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Wasn't there a posting earlier this year where scientists believed the Ozone Hole had started to repair itself?

The damage continues...

AB3A

Tue Oct 03 17:15:48 -0700 2006
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Yeah. It was just one study.

Truthfully, the ozone hole may also have something to do with the imminent flip of the earth's magnetic field. We don't know precisely what all the causes are. However, one thing is certain: CFCs linger for a long time.

The damage continues......

Spider

Wed Oct 04 00:07:34 -0700 2006
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imminent flip of the magnetic field?

I read some time ago where geologists maintain that iron ore strata showed that the magnetic poles were reversed a long time ago.  Why is it thought this is imminent? What sort of problems (apart from funny compass readings) do scientists think this is likely to cause should it happen? Has there been any study of this? How often is the magnetic deviation checked? Does mankind need to be worried if this "flip" takes place? Lots of questions. Ozone holes could be the least of the earths problems.

The damage continues......

AB3A

Sat Oct 07 06:58:53 -0700 2006
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It's a fact that the earth's magnetic field is long "overdue" for a flip. And it's another fact that the magnetic field strength of the earth is weakening.

Depending on how much stock you want to put in to models, many of them do show that the earth's magnetic field is in the process of flipping. It isn't unreasonable to wonder if the earth's ozone hole may be related to this event. Unfortunately, I don't know where anyone will be able to find forensic evidence of the existence, or the lack thereof, of upper atmospheric ozone over the poles.