Usually Doppler radar is used.
Doppler radar is a very useful tool, as it can detect the kind of rotation that can produce a tornado.
You use it when you are comparing data.
A
The largest tornado on record ocurred near El Reno, Oklahoma on May 31, 2013. It was 2.6 miles wide.
Usually scientists do not use any tool to determine how strong a tornado is. Usually the strength of a tornado is determined based on the severity of damage it causes. Occasionally wind speed measurements are obtained using Doppler radar, but such measurements are rare.
meteorologists use a special kind of radar which is based on the?
No, a tornado is a kind of violent windstorm.
Jupiter has a big red spot. It is not just any old spot though, it is some kind of on-going tornado. If you head directly to it & reach Jupiter's atmosphere, you will be sucked into the dot (or tornado) and probably die...
A tornado is a kind of vortex. Air in a tornado rotates rapidly. Additionally, a tornado may contain multiple smaller vortices.
the tornado kind
That rather depends in which context you mean ! When I first saw this question - the transponder I immediately thought of - is the kind that's built-in to an aircraft. An aircraft transponder is a small box of electronics, that transmits a constant stream of data - including the plane's identity, height, speed and radar heading. The control tower sees the data alongside a corresponding 'blip' on the radar screen.
A tornado is itself a kind of vortex, and can have smaller vortices inside of it.