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EX. W Exam 3
Extreme Weather
| Question | Answer |
|---|---|
| warm sector | the region of warm air between between the warm and cold fronts. Partly Cloudy. |
| cyclogenesis | any development or strengthening of a mid-latitude cyclone |
| convergence | causes air density to increase directly above the surface |
| For a surface low to develop into a storm... | upper level divergence of air must be greater than surface convergence of air |
| For a surface high to strengthen into a storm | upper level convergence of air must exceed low-level divergence of air |
| anticyclone | an area of high atmospheric pressure around which the wind blows clockwise (N.H.) |
| Cyclone | an area of low pressure around which the winds blow counter-clockwise (N.H.) |
| 850 mb level | contains much of the moisture in the atmosphere. basically where the clouds are. ( look for dew point) |
| 700 mb level | vertical velocity. this is the layer to which we can see vertical motion |
| 500 mb | Steering winds and vorticity. half way up. the average wind speed of the atmosphere |
| 300 mb | Jet stream. It controls much of the lower atmosphere |
| Ordinary cell (air mass) thunderstorms | tend to form in a region where there is limited wind sheer ( where wind speed and wind direction do not abruptly change with increasing height above the surface) |
Created by:
gehleja
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