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Thursday, 6 December 2012

Hurricanes 2

Hurricanes get their start oer the warm tropical amnionic fluid of the North Atlantic Ocean near the equator. Most hurricanes come in in late summer or early fall, when sea temperatures are at their highest. The warm waters heats the atmosphere above it, and the updrafts of warm, moist nervous strain begin to rise. Day after daylight the fluffy cumuli form atop the updrafts. But the cloud surpass rarely rise high than about 6,000 feet. At that stature in the tropics, there is usually a layer of warm, dry out station that acts like an invisible ceiling or lid. in one case in a while, something happens in the upper personal credit line that destroys this lid. Scientist mount not know how this happens. But when it does, its the first step in the birth of a hurricane. With the lid off, the warm, moist air rises higher and higher. Heat energy, released as the water drying up in the air condenses. As it condenses it drives the upper drafts to heights of 50,000 to 60,000 feet. The cumuli become towering thunderheads. From after-school(prenominal) the storm area, air moves in over the sea control surface to replace the air soaring upwards in the thunderheads. The air begins swirling near the storm revolve about, for the same reason that the air swirls around a tornado center.
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As this air swirls in over the sea surface, it soaks up more and more water vapour. At the storm center, this new supply of water vapor gets pulled into the thunderhead updrafts, purgative still more energy as the water vapor condenses. This makes the updrafts rise faster, pulling in even larger amounts of air and water vapor from the storms edges. And as the updrafts speed up, air swirls faster and faster around the storm center. The storm clouds, sorrowful with the swirling air, form a coil. In a few old age the hurricane will have grown greatly in coat and power. The swirling shape of the winds of the hurricane is shaped like a dough-nut. At the center of this giant dough-nut is a cloudless, hole...
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