Term
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Definition
| the force exerted by the weight of a column of air above a given point, measured with an Aneroid Barometer. Goes down when you go up because less air above you. |
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Term
| Why does Siberia have the highest air pressure ever recorded in december? |
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Definition
| Siberia is in the Northern Hemisphere in Asia so December is winter in Siberia. The air in winter time compresses (shrinks in volume) doesn't take up as much space as in summer, so density is greater since more air in same space as in warm weather, higher pressure since more dense. Asia is large continental mass. Siberia has a continental climate which ahs very little water in air (water makes air less stable) air with water is less dense and Siberia has dry air which allows for high pressure. |
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Term
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Definition
| anti-cyclone (clockwise in n.hem reverse in s.hem), clear weather (or fair weather cloulds only--> cumulus clouds), Fair weather (dry air), rotates right in n.hem, decending air (center of the system, more densee->sinks), divergence at surface, convergence in upper atmosphere, stable, ridge, adiabatic heating, strong cooling creates it, winter-recorde high |
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Term
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Definition
| Cyclone (counterclockwise in n.hem reverse in s.hem), cloudy weather, inclement weather (possible, not always, formation of clouds b/c of wet air), rotates left in n.hem, ascending air (less dense->rise), convergence at surface, divergence in upper atmosphere, unstable, trough, adiabatic cooling, strong heating creates it, summer-record low |
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Term
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Definition
| unstable, less pressure and less dense |
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Term
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Definition
| stable, more pressure, and more dense |
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Term
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Definition
| lines on a map/diagram that connect points of equal pressure |
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Term
| F6.10/F6.9 look up direction and speed |
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Definition
| closer to low pressure steaper the gradenate the faster the wind speed |
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Term
| Coriolis Force (effect) F6.12 |
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Definition
| speed of earth rotates 15 degrees per hour, difference in degrees from rocket to targe was 15 degrees since the earth was moving under it (not rly curved but straight line) Right in N. Hem, left in S.Hem |
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Term
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Definition
| upper level winds --> no friction, only have pressure gradient force, wind, coriolis effect, wind is flowing parallel to the isobars (geostrophic flow) |
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Term
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Definition
| effect of friction, isobars cross over speed direction bars? |
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Term
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Definition
| thick, area above the soil, land, water, lakes, oceans, etc. |
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Term
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Definition
| is faster when isobars are closer together and wind is greater around low pressure than high pressure, higher because no friction in upper level |
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Term
| How might cyclone and anti-cyclonee change when we go up (to upper level)? |
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Definition
| if air is convergening at surface (coming together) so when it goes up it builds ridge (high pressure) which gets divergence. So, if you have low pressure at surface you will have high pressure up and visa versa |
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Term
| Why do we generally get a westerly flow "upstairs"? |
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Definition
| no friction, rotation of the earth (w->e), jet stream generally flows w to east |
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