444slides.42.032907

444slides.42.032907 - The environments flux of streamwise...

Info iconThis preview shows pages 1–26. Sign up to view the full content.

View Full Document Right Arrow Icon
Parker
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Davies-Jones et al.
Background image of page 4
Scanned from Houze
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 8
Photo by William T. Hark OFB
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Landspouts, waterspouts, and gustnadoes are axamples of non-supercellular tornadoes . They may occur beneath a supercell storm, but the fundamental processes do not require the storm to be a supercell. However, almost all significant (F2 or greater) tornadoes are produced by supercells . The supercellular tornado process is unique in that the supercell produces its own vertical vorticity and then concentrates it into a tornado vortex, without the need for any ambient vertical vorticity.
Background image of page 10
Storm moving across vortex lines “crosswise vorticity” Storm moving into vortex lines “streamwise vorticity” “Updraft-flanking vortices” “Helical (rotating) updraft” Storm motion
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
u v 0 km 3 km 6 km 9 km
Background image of page 12
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 14
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 16
Background image of page 17

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 18
Background image of page 19

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 20
Background image of page 21

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 22
Background image of page 23

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 24
Background image of page 25

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 26
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: The environments flux of streamwise vorticity into the storm is measured in terms of the 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 Bluestein V.II A ready source of high SRH air on the stormscale low-level mesocyclone high SRH air from FFD wall cloud + LL meso Parker env. inflow LCL 2 LCL 1 UPDRAFT REGION click anim OFB Photo courtesy Roger Edwards Precip loading in hook, Evaporation, Dynamic effects RFD Photo courtesy Roger Edwards Clear slot from subsidence RFD Davies-Jones et al. High momentum RFD surge Fujita Bluestein V.II Davies-Jones et al. Parker T Parker T Parker T...
View Full Document

Page1 / 26

444slides.42.032907 - The environments flux of streamwise...

This preview shows document pages 1 - 26. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online