atoc EXAM REVIEW

atoc EXAM REVIEW - backward direction of the PGF. The...

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Cumulus
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Pressure decreases with altitude
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Cumulus- look like cauliflower Produce thunderstorms- cumulonimbus Layered and widespread- stratus If precipitation from stratus occurs they are nimbostratus Cumulus-clouds with vertical development Cirrus- high in the sky Nimbus- produce rain Cirrostratus- high in the sky layered Cirrocumulus- high in the sky and puffy Middle clouds are altostratus and altocumulus
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Fig  9.8
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Fig  9.4
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Fig  9.3
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Fig  9.2 Typical air masses over US prior to development of a cyclone.
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Chapter 9: Polar Front Theory Part 1: the Set-up
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Dry Line: A front between moist and dry air (mT and cT)
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Fig 7.12 Fig 7.13
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Meanwhile, back down in the friction layer, air converges into Low pressure and diverges from High (think “Beaker”)
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Curvature of the flow aloft can cause convergence and divergence. This is an imbalance of forces.
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Geostrophic flow around a Low pressure slows down, due to the somewhat
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Unformatted text preview: backward direction of the PGF. The Stratosphere puts an effective lid on the rising air in the Tropopause. So, near the tropopause, converging air must go down (sinking motion), and diverging air must draw air from below (rising motion). Convergence and Divergence Convergence air flows towards a central point. Divergence air flows away from a central point. The black lines show height of the 300mb surface A) shows that the pressure will be flat if the temperature remains constant from one region to the next. A) When the temperature does vary though it causes the pressure surface to slope downward from warm to cold air, so pressure goes down from the tropics to the poles. LOW HIGH LOW HIGH Two ways to draw upper level charts: Map the height at which the pressure is a certain value (say, 500 or 700 millibars) OR Map the pressure at a certain height (say, 5 km or sea level)...
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atoc EXAM REVIEW - backward direction of the PGF. The...

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