Explanation – Jet streams are high-velocity winds primarily found in the upper levels of the troposphere, near the tropopause (the boundary between the troposphere and the stratosphere). They occur at altitudes of about 8 to 14 kilometers above Earth’s surface and are driven by temperature differences between air masses, as well as the Earth’s rotation. These winds play a significant role in weather patterns and are used by airplanes to reduce flight times.

Source: The Hindu