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Old January 14th 13, 09:34 PM posted to uk.sci.weather
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Default Visualisation of the recent stratospheric warming

excuse the non scientific explanation but this sort of makes it look like somebody has jabbed a pin against the tropopause, bursting it

http://i50.tinypic.com/1zwgkmd.gif

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Old January 14th 13, 09:48 PM posted to uk.sci.weather
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Default Visualisation of the recent stratospheric warming

In article ,
Scott W writes:
excuse the non scientific explanation but this sort of makes it look
like somebody has jabbed a pin against the tropopause, bursting it

http://i50.tinypic.com/1zwgkmd.gif


It's fascination how the first warming seems to have occurred somewhere
in the region of the Red Sea (hardly where one would have guessed),
before moving NE and rapidly spreading.
--
John Hall

"Whenever people agree with me I always feel I must be wrong."
Oscar Wilde
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Old January 14th 13, 09:48 PM posted to uk.sci.weather
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Default Visualisation of the recent stratospheric warming

Interesting also to note what happens in the Equitorial Region & Southern Hemisphere, all switch to negative anomolies.

Could the negative anomoly over Australia be a contributing factor towards their severe heatwave?
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Old January 14th 13, 10:12 PM posted to uk.sci.weather
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Default Visualisation of the recent stratospheric warming


"John Hall" wrote in message
...
In article ,
Scott W writes:
excuse the non scientific explanation but this sort of makes it look
like somebody has jabbed a pin against the tropopause, bursting it

http://i50.tinypic.com/1zwgkmd.gif


It's fascination how the first warming seems to have occurred somewhere
in the region of the Red Sea (hardly where one would have guessed),
before moving NE and rapidly spreading.


I wonder if the wave that is breaking is in the Subtropical Jet Stream
rather than the Polar Night Jet?

Cheers, Alastair.


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Old January 14th 13, 11:37 PM posted to uk.sci.weather
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Default Visualisation of the recent stratospheric warming


"Teignmouth" wrote in message
...
Interesting also to note what happens in the Equitorial Region & Southern
Hemisphere, all switch to negative anomolies.

Could the negative anomoly over Australia be a contributing factor towards
their severe heatwave?


John Austin ex MetO told me in 1976 that long range forecasting would
improve if we could understand the stratosphere better? I still think he was
right! But we still have a lot to learn.

Will
--
http://www.lyneside.demon.co.uk/Hayt...antage_Pro.htm
Will Hand (Haytor, Devon, 1017 feet asl)
---------------------------------------------



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Old January 14th 13, 11:53 PM posted to uk.sci.weather
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Default Visualisation of the recent stratospheric warming

"Eskimo Will" wrote in message
...

John Austin ex MetO told me in 1976 that long range forecasting would
improve if we could understand the stratosphere better? I still think he
was right! But we still have a lot to learn.

Will


There is an interesting article in Wikipedia about SSWs.

IMHO, the last point is especially so:

"There exists a link between sudden stratospheric warmings and the
quasi-biennial oscillation: If the QBO is in its easterly (westward) phase,
the atmospheric waveguide is modified in such a way that upward-propagating
Rossby waves are focused on the polar vortex, intensifying their interaction
with the mean flow. Thus, there exists a statistically significant imbalance
between the frequency of sudden stratospheric warmings if these events are
grouped according to the QBO phase (easterly or westerly)."

Cheers, Alastair.




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