But you cannot view any level in the atmosphere in isolation, the flow at
any level is linked to that above via geostrophic considerations. If the
flow in the stratosphere changes, there will be a corresponding change at
all levels below, unless there is a compensating change in the thermal field
between.


--

Not much momentum in the stratosphere I would have thought, given the
low pressures, so my "first principles" thinking would suggest that
the influence of stratospheric winds would not be very significant.

JPG






Bernard Burton
Wokingham, Berkshire, UK.


Satellite images at:
www.btinternet.com/~wokingham.weather/wwp.html