Re: planetary and atmospheric rotation - origins, direction, etc

On 27 veebr, 13:29, Simon Morden
<simon.mor...@[EMAIL PROTECTED]
> wrote:
> Tux Wonder-Dog wrote:
> > Have there been any theses, studies, articles, etc, on this topic, the
> > origin of planetary rotation and the direction of atmospheric
circulation?
>
> > How deeply tied is it to the (postulated) direction of rotation of the
> > nebula of origin?  What additional causes might be postulated - eg, in
the
> > cases of Venus and Uranus?
>
> > (As you might have guessed, I'm still thinking about some of the
issues in
> > the snowball planets and M-stars thread. ;)
>
> > Wesley Parish
>
> I believe that if the accretion disk goes clockwise, the planets will
> orbit thuswise too: any counterclockwise particles would have an impact
> pro****tional to 2v^2. IIRC, simulations show such bodies are weeded out
> early on.
>
> As for rotation, in a clockwise orbiting system, the planets will have a
> tendency to go clockwise too. Massive impacts on the protoplanet can and
> will alter the rotation and axial tilt. This will happen early on during
> the accretion phase. Earlier than the Late Heavy, probably, and
> synchronous with our Moon formation (if you believe the Mars-sized
> impactor theory).
>
> In an old system, you'll need to figure in tidal locking with the
primary.
>
> Atmospheres really ought to spin in the same direction as the planet
> beneath (he adds, with understatement).
>
What if the planet does not spin at all?

Venus does not rotate quickly. But neither is Venus tidally locked to
Sun. The rotation period is 243 days, retrograde.

If Venus hardly rotated at all, with the rotation period with respect
to distant stars and Foucault pendulum inertial reference frame
measured in many years, then the day and night sides would undergo
slow progressive movement with orbital revolutions.

Would atmosphere rotate in absence of Coriolis force?