444slides.38.032207

444slides.38.032207 - Storm moving into vortex lines...

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S S S Follow-up: flanking line on RFD vs. arcus on FFD?
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S forward flank gust front
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Bluestein V.II
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Bluestein V.II Link to COMET animations (requires internet access; direct link may no longer work) A Convective Storm Matrix Background Concepts Physical Processes Updraft/Shear Interactions Animations from chapters 1, 2, and 3
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Bluestein V.II Splitting entails an increase in motion along the vortex lines
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Storm moving across vortex lines “crosswise vorticity” Storm moving into vortex lines “streamwise vorticity” “Updraft-flanking vortices” “Helical (rotating) updraft” Storm motion
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Storm motion
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scanned from notes by M. Weisman M&R text
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Bluestein V.II
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Bluestein V.II
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Mean wind x
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Storm moving across vortex lines “crosswise vorticity”
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Unformatted text preview: Storm moving into vortex lines streamwise vorticity Updraft-flanking vortices Helical (rotating) updraft Storm motion The best measure of the availability of streamwise vorticity in the environment is the storm-relative helicity : SRH = ( v - c ) = vorticity vector * part of storm-relative flow that is II to it = flux of streamwise vorticity into the storm Z 0 km 3 km 6 km u v 0 km 3 km 6 km 9 km Computing storm-relative helicity motion of an ordinary cell motion of a supercell Twice the signed area swept out by storm-relative hodograph 10 m/s 10 m/s area=100 m 2 /s 2 =100 J/kg...
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444slides.38.032207 - Storm moving into vortex lines...

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