The flashcards below were created by user
on FreezingBlue Flashcards.
The 4 forces that have a fundimental influence on the wind velocity are what?
- Pressure Gradiant,
- Coriolis Force,
- Centripetal force,
- Friction forces.
Coriolis force acts at right angles to the (Isobars/wind direction?) and the 4 factors which determine it's strength are what?
Earth spin, Air density, Wind Speed, Latitude.
In the Southern hemisphere, air flowing out from a (low/high?) pressure system will deflect to it's (right/left?) which produces a (clockwise/anticlockwise?) around a (high/low?)
When coriolis force is greater than the pressure gradient, the air will flow (clockwise/anticlockwise?) around a (high/low?) and vice versa
Anitclockwise - high
Clockwise - low
When the wind flows paralell to straight isobars, the winds is called a (?) wind, and when it flows paralell to curved isobars it is called a (?) wind.
When the friction layer is dense, the strength of the (pressure gradient/coriolis force?) reduces so that the wind starts to flow (across/parallel to?) the isobars, (inward to/parallel to/outward from?) the high.
The wind is said to Veer when it's direction changes in a (clockwise/anticlockwise?) direction.
After Sunrise in the southern hemisphere, the wind will (Veer/Back) and (increase/decresase?) in strength?
When decending into a dense friction layer in the southern hemisphere, the wind will (Veer/Back), and (increase/decrease?) in strength.
Veer , decrease
The rotating cup anemometer measures the surface wind at approximatley ? meteres /agl, and measures the wind (speed/velocity?)
Windsock speeds at sock degrees of