Abstract:  The high 'exceptional' high upper planetary winds 
of Venus have a simple explanation.  It is the temperature 
caused expansion and contraction of the upper level gases 
(atmosphere) due to the rotation of the planet.

Venus as reported, has terribly hard winds in the upper 
atmosphere.  It is reported that scientists are baffled as 
to the cause of such high and totally unexpected winds.

joe, as usual, steps in, and gets his two cents worth in, as 
to the theoretical causes of the phenomena.

So:  The Cosmos and its Nature is, for all humanly practical 
purposes, composed of just a couple of simple concepts that 
surround dirt (mass) and superdirt (radiation).

In this case, we have very high winds at the very top of the 
planet venus.  The solution, joe proposes, is to look for 
the simplest possible solution as he recommends for 
understanding all celestial phenomenon.  

Fact:  The atmosphere is composed of much heavier gaseous 
material than our own planet earth.

Fact:  Some 30 times heavier i am told.

Being so dense (heavy) the pressures at the base of the 
atmosphere is much, much, higher.

As the planet rotates in orbit, at its nominal rate, it 
tends to create its own 'appearance of winds' at the 
atmosphere wishes to remain still.  These are the lower 
level winds and eddys.  If they are 'picked up' by the 
Venusian planets surface viscosity (sticky-ness) and start 
to rotate with the planet orbit speed then the winds 
(material) at the bottom of the atmosphere appear to 'die 
down' when in fact, they are smoking along at velocity 
keeping up with the surface of the planet's rotation.

For example our own earth at about 8,000 miles in diameter 
and 24,000 miles in circumference takes about 24 hours to do 
one revolution.  That translates into the 'still' summer air 
traveling at 1,000 miles per hour.  Stop the earth and see 
how windy it can get in a hurry.

Movement appears as non-movement.  Non-movement appears as 
movement.

In the upper atmosphere, the situation may be a little 
different.

Here the sun, which is very much closer to the heavy gaseous 
upper atmosphere, is heating the upper airs as they rotate 
into the sun's heat energy target area at one end of the 
planet.

The same gases (atmosphere) then undergo cooling when that 
portion of the atmosphere receed into the dark shaded 
portion of the planet.

The additive combination of the expansion and contraction of 
the atmosphere start a push-pull effect on the upper level 
atmosphere and start up a continuing additive velocity whose 
energy (force) M x V is only partially absorbed by the 
lesser rotating gases below.  But the net result is a high 
speed upper atmosphere with all sorts of 'Jupiter like' 
circulation features.

Any magnetic components, if any, of wind velocity, have been 
deliberately left out and studiously ignored and just 
theoretical mechanical fluctuations in atmospheric 'magma' 
have been discussed.  

Thus endeth joe's quick entry and exit into and out of 
atmospheric physics.  Any corrections to joe's entry level 
hypothesis concerning the high winds of the planet Venus 
will be left to the atmospheric scientists and experts.  

More later if the wind shifts.