![](v3_space.gif) |
![](v3_space.gif) |
![](v3_space.gif) |
![](v3_space.gif) |
![](v3_space.gif) |
![](v3_space.gif) |
![](v3_space.gif) |
![](v3_space.gif) |
![](v3_space.gif) |
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Planetary-scale waves
propagating from the
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troposphere (produced by big mountains) into the
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stratosphere.
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Those waves interact with
the polar vortex to
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break down the polar vortex.
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There are no big mountains
in the Southern
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Hemisphere to produce planetary-scale waves.
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No sudden warming in the
southern polar vortex.
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