Wind always exists no matter if you feel it or not
Hope this helps =)
Edit: some might say "by it's effects"
Yes you do exist ,its just that they don't know you do
Particles exist because they have been observed and studied in various experiments and through the use of powerful scientific instruments like particle accelerators. Their behavior and interactions have been well-documented and their existence is supported by numerous experiments and scientific theories in the field of particle physics.
the updraft wind goes up and the down draft wind goes down
This is comparable to the wind, in that you can't see it, but you know it is there. You can conclude that there is something, for example, by watching trees or other things moving in the wind. In the case of a black hole, the effects of its gravity can be seen quite clearly.
An anemometer is a device that provides information on wind speed and wind pressure. Sonic anemometers measure the wind speed and pressure of sonic pulses that exist between pairs of transducers.
large colonies of bacteria know to exist in
Well it depends. If its a big wave, there lots of wind. If its a small wave, there's probably little wind. It has to be strong enough. Surprisingly, waves comes from wind.
the wind turns the wind mill generating wind power
Nope :P
The wind direction is measured with wind vanes or wind socks. The wind speed is measured with an anemometer.
If something is in the wind, you can't see or sense it yet, but you know it's there, like you know the wind is there even though it's invisible.
NASA has a wind tunnel available in Texas, others do exist in the USA but have undisclosed locations as heavy wind tunnels are often used to test aircraft.