what is a polar jet stream? how does it impact air travel from the west coast to the east coast? (short answer)
The polar jet stream is a narrow and fast-flowing current of air found in the Earth's upper atmosphere. It generally travels from west to east in a fairly straight path near the polar region.
The polar jet stream can impact air travel from the west coast to the east coast by either aiding or hindering aircraft depending on its location. When the jet stream is favorably positioned and aligned with the flight path, it can help airplanes flying from the west coast to the east coast by providing them with a tailwind, thus increasing their speed and reducing fuel consumption. This results in shorter flight times and cost savings for airlines.
However, if the jet stream is unfavorably positioned or more erratic, it can create challenges for air travel. Strong headwinds formed by the jet stream can slow down airplanes, increasing flight times and fuel consumption. This may lead to delays, increased costs for airlines, and potentially affect the scheduling of flights.