What is Jet stream?
[[File:Aerial Superhighway.ogv|thumb|right|200px|Animation of the polar jet stream, with the fastest winds in red and slower winds in blue]] '''Jet streams''' are fast flowing, relatively narrow [[thermal wind|air currents]] found a little below the [[tropopause]], the transition between the [[troposphere]] (where temperature decreases with height) and the [[stratosphere]] (where [[temperature]] increases with height).<ref>{{cite book |title=A Dictionary of Aviation |url=https://archive.org/details/dictionaryofavia0000wrag |first=David W. |last=Wragg |isbn=9780850451634 |edition=first |publisher=Osprey |year=1973 |page=[https://archive.org/details/dictionaryofavia0000wrag/page/n177 168]}}</ref><ref>[[United States Department of Energy]]. [[June 26]], [[2002]]. [http://www.newton.dep.anl.gov/askasci/wea00/wea00135.htm Ask a Scientist.] {{Webarchive|url=https://web.archive.org/web/20080513230434/http://www.newton.dep.anl.gov/askasci/wea00/wea00135.htm |date=2008-05-13 }} Retrieved on [[May 5]], [[2008]].</ref> This is about {{convert|10|to|15|km|mi}} above the surface of the [[Earth]]. == References == {{reflist|2}} {{sci-stub}} [[Category:Winds]]