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Air Masses and Weather Systems

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FC: Air Masses and Weather systems | Cloie Langdon 9.27.2012 Period 1 Mrs. Davis

1: what is a wind belt? | A wind belt is the influence of the Earth's rotation on winds.

2: Wind belts and systems of the world and how they influence the weather: Global wind belts and calm regions affect , is the trade winds blow from the east and die out as they come near the equator . The westerlies blow from the west and move storms across the United States. The easterlies blow from the east and they cause stormy weather to occur when cold air forms this belt meets warm air of the westerlies.

4: The relationship of air masses, frontal systems and the weather formations associated to them: | The prevailing mid-latitude westerlies cause the air masses to move primarily from west to east as can often be seen in satellite sequences. There are four types of frontal systems , Cold Front, Warm Front, Occluded Front and Stationary Front. All four of these fronts affect air masses and also affect the weather formations that are associated to them.

6: Cold FRont: | A cold front forms when cold, dense air moves into a region occupied by warmer air. The forceful lifting of air along a cold front can lead to a heavy downpours and gusty winds. The weather behind a cold front is dominated by a cold air mass, so weather clears soon after a cold front passes.

8: Warm FRont: | A warm front forms when warm air moves into a n area formerly covered by cooler air. Because of their slow rate of movement and very slow slope, warm fronts usually produce light to moderate precipitation over a large area for an extended time.

10: Stationary FRont: | Occasionally, the flow of air on either side of a front is neither toward the cold air mass not toward the warm air mass, but almost parallel to the line of the front. In such cases, the surface position of the front does not move and stationary fronts form. Sometimes, gentle to moderate precipitation occurs.

12: occluded FRont: | When an active cold front overtakes a warm front, an occluded front occurs. Most precipitation is associated with the warm air's being forced upward. When conditions are suitable, the newly formed front is capable of making light precipitation of its own.

14: Cloud patterns as an indicator of weather: | Nimbostratus clouds also hang low. They are dark gray and are associated with rain or snow. Altocumulus clouds are puffy and gray, and they indicate a thunderstorm is on the way. When you see cirrus clouds, you know the day will be fair.

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Cloie Langdon
  • By: Cloie L.
  • Joined: about 7 years ago
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  • Title: Air Masses and Weather Systems
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