Re: Unusual Tropopause-Height Drop Anomaly over Wisconsin recorded by CIMSS
Posted by
JAC on 5/18/2011, 12:37 pm
It is the air the normally exists around the 200mb level getting pushed down for some reason to a much lower altitude.
The sounding shows it dropping to about the 500 to 700 mb level.
The high concentration of ozone is a dead give away.
So, what pushed it down?
IMHO, localized ionospheric heating.
If there was a strong in-feed of boundary-layer moisture under this, all hell would have broken loose with tornadoes.
That is what happened with the April 27 outbreak.
For tropical cyclones it is the opposite effect.
The tropopause actually needs to raise locally (mesoscale level) to create an anticyclone for upper-level ventilation and allow a middle-level potential-vorticity (PV) anomaly to expand vertically and spin up and to reach the ocean surface.
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