Last updated April 16 - added Randy Heiland's 3D images

High vs. low vorticity duration case comparison - runs 315 vs 317

Runs 315 and 317, which differed only slightly in initiation details, exhibited significant differences in vorticity duration. Differences in vorticity magnitude (peak over domain) were smaller.

The mesh of numbers underneath the following contour plots shows the run number. Most plots below are a zoomed-in subregion of the entire set of runs made.

Vorticity Duration

Surface vorticity duration - colorfill - entire experimental domain
Surface vorticity duration - colorfill - Closeup in lower-left
As shown below, differences in maximum (domain and time overall) vorticity at the surface were less pronounced between runs 315, 317.

Vorticity Magnitude

Surface vorticity magnitude - colorfill
Surface vorticity magnitude - contour only
1-km vorticity magnitude - contour only

Vorticity duration time series

The time series of peak vorticity for run 315 (top) and 317 (bottom) are shown. Recall that the "duration" is for values over 150*10**-4/s.

All time series

Run 315 Run 317
Vertical velocity
Vertical vorticity
Peak surface wind speed

Rainwater and surface vorticity, every 30 min

Time 2nd cell southwest - run 315 2nd cell south-southwest - run 317
30
60
90
120
150

3-D views

Thanks for Randy Heiland for rendering rainwater and (red >0, blue <0) vertical vorticity.

Time Run 315 (L), 317 (R)
30
60
90
120
150

Animations

Click on any link below to see the animated GIF.