Jet Stream
Definition
A narrow band of strong winds (100-200 kt) at high altitudes affecting flight times and routing
Related Terms
Clear Air Turbulence (CAT)
Turbulence occurring in cloudless areas, often near jet streams, invisible to radar
Great Circle Route (GCR)
The shortest path between two points on the Earth's surface, commonly used in long-haul aviation
Headwind
A wind blowing directly opposite to the direction of aircraft travel, reducing ground speed
Tailwind
A wind blowing in the same direction as the aircraft's travel, increasing ground speed
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