The air moves from these high to low pressures just as the air moves from the inside of this balloon to the outside.
The wind creates currents in the sea which help circulate the heat of the ocean around the globe…
The direction of these winds can vary over time in cycles, or oscillations, that repeat over periods of many years…
It’s something the fishermen of South America have known about for centuries…
Every three to seven years the fish off the coast of Peru virtually vanish.