Exam 10: Wind Global Systems

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An increase in either the mass or the velocity (or both)produces a decrease in momentum.

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Why is the single cell model of the general circulation not an accurate description of the actual circulation of the atmosphere?​

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Upwelling occurs along the northern California coast because​

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As an air parcel aloft moves northward from the equator,it moves closer to Earth's axis of rotation.Because of the conservation of angular momentum,the air parcel's motion should​

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Chicago,Illinois (latitude 42°N)is located in the

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Each Pacific Decadal Oscillation phase tends to predominate for 20 to 30 years before switching to the other phase.

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Describe how the conservation of angular momentum plays a role in the formation of a jet stream.​

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Upwelling is​

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At any given time,only one jet stream can be found in the atmosphere.

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Ocean-atmosphere interactions,where warm or cold surface ocean temperatures can influence precipitation patterns in a distant part of the world,are called ____________________.​

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During the negative cold phase of the Arctic Oscillation,when Greenland is experiencing mild winters,northern Europe usually experiences ____ winters.​

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The Hadley cell is referred to as a(n)____________________ cell because it is driven by energy from the Sun as warm air rises and cold air sinks.​

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During the positive (warm)phase of the ____________________,higher pressures to the south and lower pressures across the Arctic produce strong westerly winds aloft.These winds wrap around the semipermanent zone of upper-level low pressure over the North Pole that is sometimes referred to as the ____________________.​

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The ____ jet is known to show seasonal variations.In winter,the winds are stronger and the jet moves farther south as the leading edge of the cold air can extend into subtropical regions,as far south as Florida and Mexico.In summer,the jet is weaker and is usually found over more northerly latitudes.​

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In terms of the three-cell general circulation model,the driest regions of Earth should be near​

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Straight-line momentum-called ____________________-is the product of the mass of the object times its velocity.​

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What occurs during a major El Niño event? How might this affect global wind and precipitation patterns?​

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In the Northern Hemisphere,air found to the north of the polar front is ____,while air further south is ____.​

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The El Nino event features a(n)____________________ of the typical east-to-west wind flow and ocean currents across the tropical Pacific.In contrast,La Nina features a(n)____________________ of the same east-to-west wind flow and ocean currents.​

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Does the position of the polar jet stream change during the year? If so,how and why?​

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