Question

What are the Jet Streams? 

Answer 1

The term “jet streams” describes the concentrated areas of fast air movement that are found 10–15 kilometres above the Earth’s surface at the tropopause and stratosphere. They form close to the borders of neighbouring air masses that differ significantly in temperature, like the warmer air to the south and the polar region. They are linked to latitudes with a very steep poleward temperature gradient. In each hemisphere, there are two such zones. The polar front jet stream is connected to the polar front zone in each hemisphere, while the subtropical jet stream is located at roughly 30° latitude. In the Northern Hemisphere, westerly winds, which flow from west to east, are the main jet streams.