jet stream. 250 mb isotach main upper tropospheric jets closely associated with the tropopause
TRANSCRIPT
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Jet Stream
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250 mb isotach
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Main Upper Tropospheric Jets Closely Associated with the
Tropopause
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Tropopause
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Tropopause Height
http://www.atmos.washington.edu/~hakim/tropo/tropo.html
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Subtropical Jet Stream
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Subtropical Jet Stream Often Associated with a cloud band
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• http://itg1.meteor.wisc.edu/wxwise/AckermanKnox/chap7/subtropical_jet.html
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Jet Stream’s Relationship to Temperature Can Be Shown
through Thermal Wind Arguments
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250 mb isotach
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1000-500 mb thickness-large thickness gradient and thus thermal wind near jet core
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Or alternatively…
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The Jet Stream
Recall the horizontal temperature effectson the pressure:
500 mb
700 mb
850 mb
Warm Cold Psurface
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The Jet StreamConsider the balance of forces at each level:
500 mb
700 mb
850 mb
Warm ColdPs
PGFCo
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There are a variety of jet stream configurations that are well-
known
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