These dynamic structures were discovered during World War II by fighter pilots flying at high altitudes.
These dynamic structures were discovered during World War II by fighter pilots flying at high altitudes. Found just below the tropopause, their wind speeds are about 35 miles per hour during the summer and 75 miles per hour during the winter, when a subtropical one forms in addition to the ever-present polar one. For 10 points, name these meteorological structures that are fast flowing, confined air currents that form at the boundaries of air masses and appear serpentine on weather maps.
These dynamic structures were discovered during World War II by fighter pilots flying at high altitudes.
{jet streams}