In the context of planetary wind systems, what is the term given to the narrow, high-altitude ribbons of high-speed winds that blow near the tropopause?

💡 Solution & Explanation

Jet streams are geostrophic winds blowing horizontally through the upper layers of the troposphere at extremely high speeds, driven by steep temperature gradients. Options like monsoons represent seasonal wind reversals, whereas trade winds blow in the lower troposphere near the tropics.