Low level air flows toward an area of low pressure Air moves into a low

Low level air flows toward an area of low pressure

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where air masses are flowing together. Low level air flows toward an area of low pressure. Air moves into a low pressure area from two or more directions. This air movement is called convergence. The air rushing in displaces the surface air upward (around the center). In the tropics this can lead to a tropical storm. Moreover, convergent lifting is very important in the Tropics along the ITCZ . Trade winds converge, producing areas of extensive uplift and very high annual precipitation .
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Florida Peninsula On warm days air flow is from the ocean to the land along both Florida coasts. A general convergence occurs over the peninsula. This convergent pattern of air movement and resulting uplift is caused by the intense solar heating of the land and results in the greatest frequency of midafternoon thunderstorms in the USA . Middle Latitudes Convergence, as a mechanism of forceful lifting, is a major contributor to the stormy weather associated with mid-latitude cyclones, as well as tropical hurricanes. Also, any time air moves from a relatively smooth surface, such as the ocean, onto an irregular landscape, and its speed is reduced , air piles up and convergence occurs .
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Precipitation Creation 1) An air parcel is lifted by a lifting mechanism, or the parcel rises on its own, because it is unstable. 2) It cools adiabatically by expansion. 3) Eventually the parcel reaches the dew point temperature at the lifting condensation level. 4) It saturates. 5) Condensation occurs. 6) Clouds form. 7) Precipitation may or may not result.
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  • Fall '16
  • Mark Smith
  • Precipitation, unstable air, Cherrapungi

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