Hadley cell
Overall, the mean meridional circulation cells such as the Hadley circulation are not particularly efficient at reducing the equator-to-pole temperature gradient due to cancellation between transports of different types of energy. In the Hadley cell, both sensible and latent heat are transported equatorward near the surface, while potential energy is transported above in the opposite direction, poleward. The resulting net poleward transport is only about 10% of this potential energy transport. This is partly a result of the strong constraints imposed on atmospheric motions by the conservation of angular momentum.