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Jet stream
sanjit sen
ASIN: B00LGYQ4S6
Publisher: sanjit sen
Pages: 62

The jet stream is a river of windthat blows horizontally through theupper layers of the troposphere,generally from west to east, at analtitude of 20,000 - 50,000 feet(6,100 - 9,144 meters), or about 7miles (11 kilometers) up. Jet streams werediscovered in the1920s bymeteorologistWasburo Ooishi,who was usingweather balloonsfor his study ofhigh elevationwind patternsover Japan. In1939, Germanmeteorologist H.Seilkopf was thefirst to use theterm "jet stream"in a publishedscientific paper.However, it wasn'tuntil World WarII, when theJapanese usedthe jet stream forfire balloonattacks on theAmericanmainland, thatthe upper-levelwinds gainedpublicrecognition. WileyPost, an Americanaviation pioneer,is credited withbeing the firstperson to flywithin a jetstream. He andother WWIImilitary pilotsflying Boeing B-29Superfortressbombers foundthe jet streammade highaltitude flightsdifficult.
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