Definition of "equatorward"

During the high-sun season the intertropical convergence zone with its thundershowery precipitation affects the areas much as it does in the Ar areas year-round; during the low-sun season the subtropical high pressure cells shift equatorward over the areas much as they occupy the subtropical desert areas on the poleward side of Aw areas year-round.

1985, Paul E. Lydolph, The Climate of the Earth, page 196