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Chapter7_AtmosphericDistrubancesC - ContinentalPolar(cP air...

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1 Continental Polar (cP) air masses are cold, dry, and stable Maritime Polar (mP) air masses are cool, moist, and unstable . Maritime Tropical (mT) air masses are warm, moist, and usually unstable . Continental Tropical (cT) air masses are hot, dry, unstable at low levels and generally stable aloft. 1 Once it leaves its source area, an air mass modifies the weather of the regions into which it moves: it takes source region characteristics into other regions. In addition to temp , there are also modifications in humidity and stability. 2 Move faster than warm fronts Warm air very unstable Blustery & violent weather Cumulonimbus Clouds Precipitation high intensity short duration 3 COLD FRONT Winter cold front can bring frigid air, summer cold fronts often can bring air that might be only a few degrees cooler, but much less humid
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2 4 Frontal uplift is very gradual Cirrus clouds may signal the approaching front many hours clouds become lower, thicker, more extensive
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Chapter7_AtmosphericDistrubancesC - ContinentalPolar(cP air...

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