Earth's air and water

A three-dimensional diagram of Earth describes large scale wind patterns along four ranges of latitudes. These are latitudinal belts that wrap around Earth horizontally. From the top of the diagram, at the north pole, to sixty degrees north latitude, a set of arrows shows how the polar easterlies move. The arrows point down, or south, and curve toward the west. From the perspective of looking down from the North Pole, the arrows curve in a clockwise direction. From sixty to thirty degrees north latitude, a set of arrows shows how as the westerlies move north, they curve toward the east. From thirty degrees north to the equator, a set of arrows shows how as the northeast trade winds move south, they curve toward the west. From the equator to thirty degrees south, a set of arrows shows how as the southeast trade winds move north, they curve toward the west.