...

In a non-rotating environment, this movement is straightforward; a simple cycle of air from the cold poles to the warm equator and back would form. This movement is complicated in practice by the rotation of the Earth. As the air at the equator moves toward the poles, its distance from the Earth's axis of rotation decreases and the conservation of its rotational momentum will cause the northward-moving air to curve to the right according to the Coriolis force. Likewise, the air moving back towards the equator will also curve right.

Temperature

This circular motion of air is known as a Hadley cell.

The Trade Winds

On Earth, this Coriolis-forced wind movement results in the phenomenon known as the trade winds. Above about the 30th parallel, the conservation of momentum causes a breakdown in the regime of the Hadley cell, and air sinks. We may observe this in practice by examining the average value of ω, the vertical movement at the air, as averaged over all longitudes...temperature...

Tank

...tank...