Four major jet streams whirl around the planet
Earth’s rotation affects the air streams 8-16 km above the ground. The result is the jet streams, which flow east like giant snakes that bite their own tails.
SUBTROPICAL JET: The most well-known and most robust jet stream is some 30° from the Equator at a level of 12-16 km. POLAR JET:
Near the Polar front, some 60° from the Equator at a level of 8-10 km. EQUATOR