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It is possible to visualize the movement of the Hadley cell in a rotating tank of water to verify the expected "winding" and "unwinding" of the Hadley cell. A temperature gradient may be created in a slowly rotating tank of water (< 1 rpm) by placing a container of ice in the middle of a rotating tank of water. Water will then cool next to the tank, sinking and slowly flowing outwards. Continuity will then ensure that warm water on the outside of the tank will flow inward to replace the cool, sinking water. As it moves inward, the warmer surface water should move in the direction of the rotation of the tank of water.
I performed this experiment with my partner Phoebe Henderson, in which we placed four sensors, one on the center ice canister (1), one on the outer rim of the tank (4), and two on the bottom of the tank, one placed 2–3cm from the side of the canister (2), and the other 10–11cm from the canister (3). The tank was spun at 0.95 rpm (one revolution ever 62 seconds) and allowed to reach a steady state before ice was added. Paper dots were then tracked to determine the shear in the Hadley cell.