Another fantastic talk Leigh. You are correct I believe in your postulation that the 50 to 60 m/s updraft is what controls forcing all the underlying effects, like convergence, tilting, stretching, cold pool, downdrafts, etc. I also think the SVC is an effect also, sorry to say, of the super strong updraft tilting and lifting moisture up and into the mesocyclone. So the main forcing for the updraft is the internal heat engine of the mesocyclone. What is cause of the mid level mesocyclone will be the answer to tornadogenesis. I have a strong opinion on this that could use your modeling expertise.
We won't know until we drop trajectories in and do budget analyses - we are developing the tools to do this right. Establishing clear causality is the ultimate goal but in a highly nonlinear system it can be pretty tricky.
Once again, great stuff Leigh! Last year, whilst chasing in WY on May 27th I noted some small-scale vortices along the FFD - at cloud level. I've seen a few videos over the years of powerful forest fires whereby a vortex ('tornado') develops beneath the smoke plume, as opposed to from the actual fire part. I also recall (and have found) a video of 'tornadoes' developing under a volcanic plume...in some ways, as these are not developing from a hot surface per se, makes me think of the strong updraught stretching vorticity low down...anyway, the link is here - ua-cam.com/video/6gW-Txy8pmc/v-deo.html - look from around 1 min 30 seconds....of course, I know the process of powering the updraught is different.
Another fantastic talk Leigh. You are correct I believe in your postulation that the 50 to 60 m/s updraft is what controls forcing all the underlying effects, like convergence, tilting, stretching, cold pool, downdrafts, etc. I also think the SVC is an effect also, sorry to say, of the super strong updraft tilting and lifting moisture up and into the mesocyclone. So the main forcing for the updraft is the internal heat engine of the mesocyclone. What is cause of the mid level mesocyclone will be the answer to tornadogenesis. I have a strong opinion on this that could use your modeling expertise.
We won't know until we drop trajectories in and do budget analyses - we are developing the tools to do this right. Establishing clear causality is the ultimate goal but in a highly nonlinear system it can be pretty tricky.
iowa state.... completely underrated
The latest Andover Tornadoe really proves that streamwise vorticity current to be true
6:43 which book or paper are the equations on the right hand side from?
yes, I'm a masochist.
Another nice piece of work! I can't wait until you model other storms
im trying to understand the correlation between la nada and ef 5 tornadoes and extreme flooding. there is a connection we dont understand.
Leigh, are those my college computer punch cards you're releasing into the simulation?
Once again, great stuff Leigh! Last year, whilst chasing in WY on May 27th I noted some small-scale vortices along the FFD - at cloud level.
I've seen a few videos over the years of powerful forest fires whereby a vortex ('tornado') develops beneath the smoke plume, as opposed to from the actual fire part. I also recall (and have found) a video of 'tornadoes' developing under a volcanic plume...in some ways, as these are not developing from a hot surface per se, makes me think of the strong updraught stretching vorticity low down...anyway, the link is here - ua-cam.com/video/6gW-Txy8pmc/v-deo.html - look from around 1 min 30 seconds....of course, I know the process of powering the updraught is different.
Excellent work!
How uch do you think the Nvidia 30-series cards will help
Thuper Thell