Simon Bridge said:
Right now, the best practice for minimizing the damage of a tornado is to build strong structures and be able to run fast.
True. That is the most economic solution.
The problem I see is that energy is stored in the atmosphere and is being released by the tornado. It becomes a problem of removing stored energy from the system in a non-destructive way.
There is a way of thinking in which, if you throw a big enough bomb at a problem it will go away. That is not true with tornadoes, it just feeds and excites them.
A fire fighters bomb puts out the fire by depriving it of oxygen. It is not a good analogy. The equivalent in tornado is the removal of the thermal gradient. Tornadoes are a problem because, once they have started they are hard to stop.
To use many small bombs to disrupt a tornado would require a very accurate placement. It is hard to see how that could be done at low altitude without it adding energy and ferocity to the cyclone.
At high altitude, one or many small bombs would have little effect because the rotating vortex has such a high inertia and is coupled so weakly to the upper atmosphere that it will not just stop because you want it to.
The last option is to puncture the thermal boundary in the atmosphere at so many points that the energy is released in many small cyclones rather than one big tornado. That requires a technology akin to the gas guns, ground mounted propellers or helicopters, as are now used to break the thermal inversion over fruit growing areas.
Imagine a fleet of 1000 heavy helicopters, say 1 km apart flying in a line of 1000 km along the thermal inversion boundary. What is the chance that it will destroy the profile before it triggers a cyclone that will then become a destructive tornado. They would need to be heavy inefficient helicopters or have blades that are inefficient with high drag.
The direction of helicopter rotor rotation has an influence on the probability of initiating a tornado. The aim in the northern hemisphere must be to spin the air in a clockwise direction when viewed from above. That is safest because it cannot be reinforced by the coriolis force and so become self perpetuating. Which way do helicopter blades normally rotate. Is there a standard?
When two trucks pass on a US highway they generate an anti-clockwise, vertical axis vortex. Maybe driving on the LHS of the road in the northern hemisphere tornado breeding grounds could reduce the problem.