Re: Nacreous Cloud picture from 30/11

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Article #112

#112

From: Martin Brown
Date: Thu, 09 Dec 1999 00:00

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Les Crossan wrote:

> B Kemp wrote:
>
> > OK OK, what is nacreous cloud anyway?
>
> In a word, it's ABOVE the tropopause in the stratosphere - the word
> nacreous comes from the brilliant iridescence it has. Most often seen in
> conjunction with deep low pressure systems - I was chasing the cold
> front of this system (looking for funnels and tornadoes) in the Borders
> when I saw this rare event.
>
> There's believed to be a link with this cloud and ozone depletion(????)

That or the conditions where the clouds can form are right for acceleration
of the ozone depleting reactions. The real time plot over Uccle, Belgium
shows the effect of the recent event.

    http://www.meteo.oma.be/IRM-KMI/ozone/ozone.html

Regards,
Martin Brown

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From: Martin Brown <martin.brown@pandora.be>
Subject: Re: Nacreous Cloud picture from 30/11
Date: 1999/12/09
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