Jet Streams are also part of the general circulation

Polar Jet

• situated at about 10 km AGL over the polar front

Subtropical Jet

• situated above the subtropical highs at about 13 km AGL

• often visible as a plume of moisture extending from the tropics to the sub-tropical regions

Q: By analyzing the 300 mb chart, can you locate the positions of the polar and subtropical jet today?

The jet streams exhibit a "wavy" pattern around the globe....