Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tornado lift   It is shown that one of the causes for tornado is Tornado Lift. At increasing
vortex diameter its kinetic energy decreases to keep the moment of momentum
constant. A kinetic energy gradient of such vortex is Tornado Lift. Evaluation
shows that contribution of Tornado Lift in air lifting in a tornado is
comparable to buoyancy according to the order of magnitude.

13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph