The setting for a story I am creating is an earth-like planet near jovian surface area, existing in a universe where the force of gravity is appreciably weaker than in our own, such that a planet with the surface area around that of Jupiter will have a surface gravity of 1G. This planet has 24 hour days, an axial tilt of 23 degrees, and an atmosphere analogous to Earth's. The planet is in all ways an Earth analogue. The only difference is scale. Or is it?
How Many Cells
I understand that the number of convection cells within the atmosphere is determined by the rotational rate of the planet, and I get that it has something to do with the Coriolis effect, but I'm too much of a non-scientist know grasp much more than that. The faster the planet rotates, the more heavily trajectories will bend relative to the surface of the planet. If a planet is larger than Earth, but has the same rotation rate, its surface travels faster than the same latitudes on Earth. My question is whether these factors frustrate the application of Earth's wind system to this world.
How To Determine It
I'm looking for a way to determine definitively how many convection cells to expect on a world of a given surface area and rotation rate, if there is one. I don't see why the difference in the gravitational constant would have any pertinent effect, but I'm definitely not a scientist who studies this kind of thing. Mainly, I need some way of finding out at what latitudes each zone begins and ends. This setting is intended to be a reasonably realistic fantasy world, just so that it is scientifically impeccable from the audience-perspective of age-of-sail equivalent societies.
That's all I have. Winds guide you, fellow travelers.