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40 Cards in this Set
- Front
- Back
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What pressure system does the coriolis effect make winds move?
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From higher pressure to lower pressure and are deflected to the right or left by earth's rotation
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in the norhtern hemisphere which direction do winds blow around a low pressure?
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inward and clockwise
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In the N. hemisphere which direction do winds blow around a high pressure system?
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they blow outward and clockwise
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What do winds do in the S. Hemisphere?
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Winds are deflected to the left so around a low pressure: blow clockwise
high pressure: move counterclockwise |
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What do monsoon refer to?
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a wind system that exhibits a pronounced season reversal in direction
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Where are the westerlies?
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Circulation in the midlatitudes move from west to east around the globe
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What is the temperature like around the equator?
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Receives maximum solar heating so the temperature will be warm and the air is moist and rising
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What are the winds like around the equator?
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are light because it is a low pressure system
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What kidn of zone is around the equator?
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Convergent zone becase the air north and south moves towards it
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How are the poles different from the characteristics of the weather around the equator?
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They get minimum solar heating, the air here will be cold and dry because it is always a high pressure area and surface winds diverge from the poles
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What is the coriolis effect?
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the deflective force of Earth's rotation on all free moving objects, including atmosphere and oceans
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Which direction does the deflection occur in the N and S Hemisphere?
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N Hemisphere= the right
S hemisphere= left |
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How does the coriolis effect take place?
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as the speed of earth rotation varies with latitude, the air going north would be fast, easterly and air moving south would be slower, westerly
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ARe winds in the N Hemisphere around a low pressure convergent or divergent?
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Convergent and go counterclockwise
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What is the adiabatic rate?
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the rate at which air rises and cools and then as it cools it expands
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how is the adiabatic rate measure?
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every 10 degrees celsius per 1000 m
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What is the wet adiabatic rate?
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To view how air sinks/condenses and is measured every 4 to 8 degrees celsius per 1000m.
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What are the characteristics for cold air?
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Is dry, sinking, and clear skies around a high pressure system
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What is warm air like?
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moist, rising, and found around a low pressure system (cloudy skies, rainy)
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What is the name of the latitude between -10to+10 degrees?
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equatorial low, has lots of rainforests (doldrums)
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What latitude is between 10 to 25?
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tropics region, where the weather is wet and dry tropical, trade winds come from the east
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Where is the subtropical high region located?
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25 to 35 degrees, mroe desert, known as the horse latitudes, characterized by very humid, warm, dry seasons
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Where do we live?
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The Temperate zone, 35-50 winds are westerly, the weather comes from the west. 9differnet than the windbelt in the tropics)
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What latitude is at 50-60?
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the subpolar low, cloudy, damp, characterized by alot of polar front systems.
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What is a polar front?
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Separate polar and tropical air masses and it circulates the globe
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Which latitude is found between 60 and 90?
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polar high and here the winds reverse again due to coriolis effect and are east winds. the air is cold but dry
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Why do belts shift in season?
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because of the earth's rotation
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Why does Kentucky have so many droughts in July?
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Because it is close to the subtropical high latitude.
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What is different about the weather in Kentucky in Januray?
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It is colder because its closer to the polar front because marine air moving over lands cools and produces more clouds
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What are the 3 wind belts?
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Subpolar low, subtropical high, and equatorial low
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Which direction does the wind blow in the subpolar low and equatorial low?
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They move in the same direction from the east to the west
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Which direction do the winds blow in the subtropical high?
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In reverse direction from west to east
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Why are the winds different in subtropical high?
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The areas of constant high/low pressure alternate with constant wind belts
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Why do monsoons occur?
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Season wind patterns which occur because of seasonal changes in wind direction
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What are the two monsoon seasons?
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Wet and Dry
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What is the monsoon weather like in July-September in Asia?
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Asia' interior is not around a low pressure area so they get wet monsoons off the Indian Ocean, air flows onto the land
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What is the monsoon weather like in November-April in Asia?
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Asia's interior is cold around a high pressure system so they get dry monsoon from the North. The surface flow is directed off the land.
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how is general circulation produced? (why does it happen)
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Produced by cells of high and low pressure over the oceans is complicated by seasonal pressure changes over land
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What are local winds?
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affected by local pressure gradients, and are caused by topographic effects or variations in surface composite
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What are two types of breezes?
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Shore breezes and valley breezes
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